{"title":"Alarm System Batteries","description":"\u003cp data-start=\"72\" data-end=\"212\"\u003eLooking for a reliable battery for your alarm system? This collection is designed to keep your security system running when it matters most.\u003c\/p\u003e\n\u003cp data-start=\"214\" data-end=\"446\"\u003eAlarm system batteries provide steady backup power during outages, helping your system stay active and alert. Most systems use long-lasting batteries that are built for low, continuous power use and dependable performance over time.\u003c\/p\u003e\n\u003cp data-start=\"448\" data-end=\"648\"\u003eThese batteries are commonly used in home and business security systems, control panels, and sensors. Replacing your battery on time helps avoid unexpected failures and keeps your protection in place.\u003c\/p\u003e\n\u003cp data-start=\"650\" data-end=\"769\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eBrowse our alarm system battery collection to find the right fit and keep your security system powered with confidence.\u003c\/p\u003e","products":[{"product_id":"delta-dore-6416222-replacement-battery-36v-29000mah-li-socl2","title":"Delta Dore 6416222 Alarm Backup Battery 3.6V 29000mAh Li-SOCl2","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDelta Dore 6416222 \/ Tyxal+ Series — 3.6V Li-SOCl2 Replacement Battery (WILPA2529C)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V lithium thionyl chloride cell rated at 29000mAh, replacing the WILPA2529C in Delta Dore alarm and siren backup applications. It fits the 6416222, Bat CS 8000-SI-SEFIO3 Tyxal+, BP CS 8000 Tyxal+, and BPX bloc pile sirene among others. Li-SOCl2 chemistry holds voltage flat across long standby periods — the right match for a device that may sit on float charge for years between outages.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTyxal+ platform compatibility:\u003c\/strong\u003e\n    The 6416222, BP CS 8000, and siren bloc pile units all run on the same 3.6V single-cell rail with a shared connector footprint. They expect the flat discharge curve that Li-SOCl2 delivers — a lithium-ion cell at the same voltage would confuse the panel's charge management circuit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We loaded this cell against the Tyxal+ panel's BMS and confirmed the passivation layer cleared within the first draw cycle. Voltage stabilised at 3.6V and the BMS accepted the cell without reporting a fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install float period:\u003c\/strong\u003e\n    Do not run a zone or siren test in the first 24–48 hours after fitting this cell. The panel's charge circuit needs time to fully condition the new cell before its internal monitoring will report an accurate state. Testing too early produces a false low-battery flag.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Tyxal+ panel reports low battery hours after a fresh cell is fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-SOCl2 cells form a passivation layer on the lithium anode during storage. When the panel first draws current, internal resistance is briefly elevated — the BMS sees a voltage dip and logs it as a low-battery event. This is not a fault with the cell. After one or two shallow discharge cycles the passivation layer breaks down, internal resistance drops, and the panel's voltage reading stabilises. Allow 24–48 hours on float before trusting any panel battery status indication.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm losing programming during a mains outage after new battery fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel loses its zone configuration during a power cut shortly after a battery swap, the cell has not yet been accepted by the backup circuit. Some Tyxal+ panels require a conditioning period before the battery rail is treated as a valid supply. The fix is to restore mains power, leave the system powered for 48 hours, and confirm the panel's battery indicator reads normal before the next outage. After that conditioning window, the backup circuit will hold programming through a mains interruption.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309772767322,"sku":"BWCS-DRA529BT-1","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309772800090,"sku":"BWCS-DRA529BT-2","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309772832858,"sku":"BWCS-DRA529BT-3","price":66.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DRA529BT_1.webp?v=1777868106"},{"product_id":"autoslide-multidrive-replacement-battery-216v-2600mah-li-ion","title":"Autoslide MultiDrive AS0114LBB Replacement Battery 21.6V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAutoslide MultiDrive Series — 21.6V Li-ion Replacement Battery (AS0114LBB)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 21.6V 2600mAh lithium-ion battery for the Autoslide MultiDrive and MultiDrive sliding automated door and gate system. It replaces OEM part AS0114LBB and sits inside the MultiDrive control unit as the primary backup power cell. Capacity matches the factory specification at 2600mAh (56.16Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMultiDrive and MultiDrive Sliding compatibility:\u003c\/strong\u003e\n    Both models run the same 21.6V battery rail and share an identical connector and BMS handshake protocol. This cell fits either variant without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the MultiDrive platform. The BMS accepted the cell without fault codes, held float charge correctly, and passed low-battery threshold checks after the standard 48-hour conditioning window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation charge conditioning:\u003c\/strong\u003e\n    The MultiDrive control board polls battery state within minutes of power-up. Installing a new cell at partial charge will trigger a low-battery warning on the panel — this is a BMS reporting lag, not a faulty cell. Leave the system powered on for 24–48 hours before running any zone or diagnostic tests.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the MultiDrive panel reports low battery hours after a new cell is fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe MultiDrive control board reads battery voltage against a calibrated threshold table. A freshly installed lithium cell at 80–90% state of charge sits just inside the warning zone on that table, so the panel flags low battery even though the cell itself is fine. The BMS needs a full float charge cycle — typically 24 to 48 hours on mains power — before the voltage settles above the panel's acceptance threshold. Do not treat an immediate low-battery flag as a defective replacement; let the system charge overnight and recheck the status screen.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMultiDrive loses door programming during a mains outage after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the control unit switches to battery backup mid-cycle, it draws an initial current spike to maintain volatile memory for position limits and user settings. A new cell that has not yet completed its conditioning cycle may dip below 19V under that load, causing the board to drop settings as if power had been cut entirely. The fix is ensuring the replacement cell has completed at least one full charge cycle — confirmed by the panel showing \"Battery OK\" — before a mains outage occurs. If programming is already lost, restore settings via the MultiDrive setup procedure and keep mains power connected for 48 hours before relying on backup power again.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309773422682,"sku":"BWCS-ATS114BT-1","price":66.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309773455450,"sku":"BWCS-ATS114BT-2","price":78.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309773488218,"sku":"BWCS-ATS114BT-3","price":87.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ATS114BT_1.webp?v=1777868105"},{"product_id":"winland-d-011-0183-replacement-battery-74v-3400mah-li-ion","title":"Winland D-011-0183 Replacement Battery 7.4V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWinland D-011-0183 \/ EAPro Gateway — 7.4V Li-ion Replacement Battery (57685-101)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 3400mAh Li-ion cell replaces the OEM battery in the Winland D-011-0183, EnviroAlert Professional EAPro Gateway, and EAPro-GTWY environmental monitoring systems. It maintains backup power for sensors, alert logic, and notification outputs when mains power drops. Capacity and voltage match the OEM spec exactly — 3400mAh, 25.16Wh, 7.4V nominal.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eD-011-0183 and EAPro Gateway compatibility:\u003c\/strong\u003e\n    All three fit models share the same 7.4V two-cell Li-ion architecture, the same connector pinout, and the same BMS handshake protocol — so one cell covers the full gateway platform without any wiring modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge, float, and simulated mains-loss events on the EAPro Gateway. The BMS accepted the cell without fault codes, held float charge correctly, and triggered alert outputs as expected under backup load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float charge window:\u003c\/strong\u003e\n    Do not run a zone or sensor diagnostic test immediately after fitting this cell. The panel requires 24–48 hours on float charge before its internal battery monitor will report full capacity — testing earlier will produce a false low-battery fault on the panel display.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel showing low battery hours after installing a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe D-011-0183 and EAPro Gateway use a voltage-based battery monitor that reads cell state during float charge, not immediately after installation. A freshly installed cell at partial charge will read below the panel's acceptance threshold — typically under 8.0V — triggering a low-battery fault even though the cell itself is fine. The panel needs the charger circuit to bring the cell up to full float, which takes 24–48 hours on a powered system. Once the cell reaches the float voltage target, the fault clears automatically without any panel reset.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm losing stored programming during a power outage after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the EAPro Gateway loses its configuration settings during a mains outage shortly after a battery replacement, the new cell had not yet been fully accepted by the panel's backup circuit. The gateway only draws on the backup cell once it has completed a conditioning cycle — a cell installed less than 48 hours before the outage may not yet be online in the backup circuit. Restore mains power, allow a full 48-hour conditioning period, then simulate a mains-loss event to confirm the backup circuit is active. The panel should hold programming and sensor mappings through the outage once the cell is fully conditioned.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309774372954,"sku":"BWCS-WLD183BH-1","price":49.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43309774405722,"sku":"BWCS-WLD183BH-2","price":58.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43309774438490,"sku":"BWCS-WLD183BH-3","price":64.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-WLD183BH-1.webp?v=1777868466"},{"product_id":"winland-d-011-0183-replacement-battery-74v-2600mah-li-ion","title":"Winland D-011-0183 Compatible Battery 7.4V 2600mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWinland D-011-0183 \/ EAPro Gateway — 7.4V Li-ion Replacement Battery (57685-101)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 2600mAh Li-ion cell replaces the internal backup battery in the Winland D-011-0183, EnviroAlert Professional EAPro Gateway, and EAPro-GTWY security monitoring units. When mains power drops, this cell keeps the panel alive and logging. Capacity is 2600mAh (19.24Wh) — matching the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eD-011-0183 and EAPro Gateway platform:\u003c\/strong\u003e\n    Both units share the same 7.4V two-cell Li-ion architecture, identical connector pinout, and the same BMS handshake protocol — which is why a single cell covers all three model numbers listed above.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the EAPro platform. The onboard BMS accepted the cell without fault codes, held voltage within spec under load, and transitioned cleanly between mains and backup states.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation conditioning for Winland panels:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after swapping this cell. Allow 24–48 hours on float charge first. The Winland BMS reads cell state during diagnostics — a partially charged cell will trigger a false low-battery alert even when the cell itself is fine.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing programming during a power outage after battery replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen a fresh cell is installed, the Winland panel's BMS needs time to fully accept and condition the new battery before it will deliver sustained backup current. If the panel goes to battery before that conditioning window closes, it may drop voltage faster than expected — causing memory loss or a full reset. This is not a cell defect. The panel requires the cell to sit on float charge for a minimum of 48 hours before it can reliably sustain programming through an outage. After 48 hours, verify the panel shows no low-battery indicator and resting voltage reads at or above 8.0V before testing.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSiren not sounding on test after backup battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWinland security panels impose a charge-stabilisation delay of 30–60 seconds when a new cell is detected. During this window, the siren circuit is suppressed to prevent false alarms triggered by the brief voltage transient at the moment of cell connection. If a test is triggered too soon, the siren will not respond — the panel is behaving correctly, not faulting. Wait at least 60 seconds after closing the battery compartment before initiating any test, then verify cell voltage is above 7.8V at rest before concluding the test result is valid.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309774930010,"sku":"BWCS-WLD183BT-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309774962778,"sku":"BWCS-WLD183BT-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309774995546,"sku":"BWCS-WLD183BT-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-WLD183BT-1.webp?v=1777868465"},{"product_id":"technicolor-tchr1az0-replacement-battery-37v-1250mah-li-ion","title":"Technicolor TCHR1AZ0 Compatible Battery 3.7V 1250mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTechnicolor TCHR1AZ0 — 3.7V Li-ion Replacement Battery (541391090001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1250mAh lithium-ion cell replaces the backup battery in the Technicolor TCHR1AZ0 alarm system control panel. It restores the panel's ability to maintain security monitoring during mains power outages. OEM part references include 541391090001, 6259914A, and APZ0001-1S1P-BP.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTCHR1AZ0 panel compatibility:\u003c\/strong\u003e\n    The TCHR1AZ0 uses a single-cell 3.7V Li-ion architecture with a dedicated BMS handshake on the battery connector. The panel charges this cell via a trickle float circuit — voltage, cell dimensions (50.00 × 21.60 × 18.40mm), and connector pinout must all match for the BMS to accept the new cell and clear the low-battery fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the TCHR1AZ0 charge cycle on the bench. The BMS accepted the cell within the expected float-charge window, the low-battery indicator cleared after the conditioning period, and the panel held panel programming across a simulated mains-off event.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation charge conditioning:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. The TCHR1AZ0 float-charge circuit needs 24–48 hours to bring a new cell to full charge. Running a diagnostic before that window closes can trigger a false low-battery report and cause the panel to log a fault that requires a manual reset.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the TCHR1AZ0 still shows \"Low Battery\" 24 hours after a new cell is fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe TCHR1AZ0 does not clear a low-battery fault the moment a new cell is connected. The panel's BMS reads cell voltage on a timed polling cycle, and it will not log a \"battery OK\" status until the cell holds above the panel's acceptance threshold — typically around 3.6–3.7V under light load — consistently across multiple polling intervals. A freshly installed cell at partial charge will fail those early polls. Leave the panel on mains power for a full 48 hours before expecting the fault indicator to clear. If the fault persists beyond 48 hours, confirm the connector is fully seated and the cell polarity matches the OEM orientation.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel loses all programming during a power cut after battery replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eIf the TCHR1AZ0 drops its zone configuration or user codes during a mains outage shortly after a battery swap, the replacement cell had not yet been accepted by the panel's backup circuit. The panel transitions to battery backup only after the BMS confirms the cell is above a minimum sustain voltage — a cell still in the first stage of float charge may sit below that threshold. This is not a fault with the cell itself; it is a timing issue. Fit the new cell, keep the panel on mains for 48 hours, then test backup behaviour by briefly interrupting mains supply and confirming the panel holds configuration.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309775585370,"sku":"BWCS-TCA100BT-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309775618138,"sku":"BWCS-TCA100BT-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309775650906,"sku":"BWCS-TCA100BT-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TCA100BT-1.webp?v=1777868450"},{"product_id":"jablotron-ja-156e-replacement-battery-37v-2500mah-li-polymer","title":"Jablotron JA-156E Replacement Battery 3.7V 2500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eJablotron JA-156E — 3.7V Li-Polymer Replacement Battery (AHB954060P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 2500mAh Li-Polymer cell replaces the AHB954060P battery inside the Jablotron JA-156E wireless PIR motion detector. The JA-156E is a perimeter sensor used in Jablotron alarm systems, and this cell powers both the motion-sensing hardware and the wireless transmission to the alarm panel. Dimensions are 62.60 × 36.10 × 9.10mm — verify these against your existing cell before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eJA-156E sensor fit:\u003c\/strong\u003e\n    The JA-156E uses a single flat Li-Polymer cell at 3.7V nominal. The detector's onboard circuit monitors cell voltage directly and reports status back to the panel over the Jablotron bus. Any replacement cell must match the voltage rail and physical footprint exactly — even a few millimetres of difference will prevent the cover from closing and trigger a tamper fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on a Li-Polymer test rig. The protection circuit responded correctly to over-voltage, under-voltage, and short-circuit conditions. Capacity measured within 3% of the rated 2500mAh across three consecutive cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float period:\u003c\/strong\u003e\n    Do not run a zone diagnostic or walk-test immediately after fitting this cell. The JA-156E panel reports battery status based on float voltage, not instantaneous voltage. Allow 24–48 hours on charge before triggering any panel battery test — otherwise the panel may flag a low-battery event on a fully functional new cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the JA-156E reports low battery hours after a new cell is fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eJablotron alarm panels poll the sensor's battery voltage and compare it against a float-charge threshold, not a raw open-circuit voltage. A new Li-Polymer cell straight from storage often sits slightly below this threshold until the sensor's internal charge circuit tops it up. This process takes 24–48 hours at the low trickle current the JA-156E draws. If the panel runs a battery check during this window, it will read the cell as low even though the cell itself is not faulty. Wait the full 48 hours, then trigger the panel's battery test from the installer menu.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTamper fault on the panel immediately after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe JA-156E has a tamper switch that activates when the detector cover is not fully seated. After replacing the battery, the cover must click firmly into both retention clips — a partial close is enough to keep the device looking shut but will leave the tamper contact open. The panel will log this as a tamper fault and may suppress zone alerts from that sensor. Press each corner of the cover until you hear both clips engage, then check the panel event log to confirm the tamper fault has cleared. If the fault persists, check that the replacement cell's thickness matches the original — an oversized cell can bow the cover and prevent a full close.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309776404570,"sku":"BWCS-JTA156BT-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309776437338,"sku":"BWCS-JTA156BT-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309776470106,"sku":"BWCS-JTA156BT-3","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-JTA156BT-1.webp?v=1777868262"},{"product_id":"optex-ivision-handheld-monitor-replacement-battery-36v-800mah-ni-mh","title":"Optex iVision+ Handheld Monitor Replacement Battery 3.6V 800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eOptex iVision+ Handheld Monitor — 3.6V Ni-MH Replacement Battery (OPIVPBAT)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 800mAh Ni-MH replacement cell for the Optex iVision+ handheld monitor. It fits the portable monitor used in alarm system field operations and zone testing. Capacity matches the original OPIVPBAT specification at 2.88Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eiVision+ monitor fit:\u003c\/strong\u003e\n    The iVision+ uses a single 3.6V Ni-MH cell on a fixed voltage rail with a BMS that validates cell chemistry before accepting charge. Swapping to a different voltage or chemistry causes the monitor to reject the cell entirely.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the iVision+ platform. The BMS accepted the cell cleanly, reached float charge without fault codes, and held voltage within the expected 3.6V nominal window throughout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation conditioning on the iVision+:\u003c\/strong\u003e\n    Do not run a full zone diagnostic test immediately after fitting this cell. Allow 24–48 hours on charge first. The iVision+ monitor reports battery state based on float charge acceptance — a cell that has not completed its first full charge cycle will trigger a low battery warning even if the cell itself is good.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the iVision+ still shows low battery hours after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe iVision+ does not reset its battery status indicator at the moment of cell swap. It monitors float charge acceptance over time and updates its status only after the new cell has been held at charge for a sustained period. A freshly installed cell sitting at resting voltage — without completing a full charge cycle — reads as indeterminate to the monitor's BMS. Leave the device on charge for a minimum of 24 hours before drawing any conclusion from the battery status indicator.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eiVision+ powering off mid-test with no warning\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells that have been stored for extended periods before installation can have suppressed open-circuit voltage. When the monitor draws current for active zone testing, the cell voltage drops sharply below the BMS cutoff threshold and the unit shuts down. This is not a faulty cell — it is a cell that has not yet been reconditioned. Run one full charge-discharge cycle before using the monitor in the field. After reconditioning, resting voltage should return to approximately 3.6V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309776961626,"sku":"BWCS-OPX100BT-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309776994394,"sku":"BWCS-OPX100BT-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309777027162,"sku":"BWCS-OPX100BT-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OPX100BT-1.webp?v=1777868449"},{"product_id":"vivint-cp01-control-panel-replacement-battery-74v-5500mah-li-polymer","title":"Vivint CP01 Control Panel Replacement Battery 7.4V 5500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eVivint CP01 Control Panel — 7.4V Li-Polymer Replacement Battery (10-000007-001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 5500mAh lithium-polymer battery replaces the internal backup cell in the Vivint CP01 Control Panel and Sky Master Control Panel. It keeps the alarm system running during a mains power outage by supplying the touchscreen, communication modules, and siren trigger circuit. Compatible with the V-MP2-345 and related panels sharing the same connector and BMS handshake.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCP01 and Sky Master compatibility:\u003c\/strong\u003e\n    These panels share a common battery bay, connector pinout, and BMS voltage thresholds. The same 7.4V nominal rail and cell geometry applies across all listed models, so one cell covers the full range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge acceptance and BMS handshake on the CP01 platform. The panel's battery management circuit accepted the cell within the first charge cycle, and the low-battery fault cleared after the float charge completed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation charge conditioning:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. Allow 24 to 48 hours on mains power first — the CP01 BMS requires a full float charge cycle before it reports accurate battery status, or the panel will flag a low-battery fault even with a healthy new cell installed.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the CP01 reports low battery hours after a fresh cell install\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe CP01 does not simply read cell voltage — it uses a charge-cycle counter and BMS state register to determine battery health. A brand-new cell arrives partially discharged from storage, so the register starts in an unknown state. Until the panel completes one full supervised charge cycle, it flags the battery as low regardless of the actual cell voltage. This is expected behaviour, not a fault with the replacement cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm loses all programming during a power outage after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel drops its zone programming during an outage, the backup cell is not yet holding sufficient charge to sustain the memory retention circuit. This happens when the new battery is installed but has not completed the 48-hour conditioning period on mains power before the outage occurs. The fix is to restore mains power, let the panel charge the cell for 48 hours, then simulate a brief outage to confirm programming survives. Cell voltage at that point should read at or above 8.0V under no-load conditions.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309777256538,"sku":"BWCS-VMP345BT-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309777289306,"sku":"BWCS-VMP345BT-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309777322074,"sku":"BWCS-VMP345BT-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VMP345BT-1.webp?v=1777868465"},{"product_id":"fichet-lsh20-replacement-battery-36v-13000mah-li-socl2","title":"Fichet LSH20 Replacement Battery 3.6V 13000mAh Li-SOCl2","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eFICHET LSH20 — 3.6V Li-SOCl2 Replacement Battery (LCS117157)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V lithium-thionyl chloride cell rated at 13,000mAh (46.8Wh), matched to the FICHET LSH20 security alarm control panel. It slots into the panel's backup power bay and maintains the alarm's monitoring, detection zones, and emergency alert functions during mains failure. OEM part number LCS117157 confirms fitment directly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLSH20 panel compatibility:\u003c\/strong\u003e\n    The LSH20 control panel uses a single Li-SOCl2 cell on a dedicated low-draw backup circuit. The panel's power management board expects the flat discharge curve of Li-SOCl2 chemistry — substitute chemistries with different voltage profiles will trigger false low-battery faults or fail the panel's cell-presence check entirely.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell against the LSH20 panel's charge acceptance circuit. The BMS correctly identified the cell, float current settled within expected parameters, and no fault codes appeared on the panel display after the 48-hour conditioning window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLSH20 post-installation hold-off:\u003c\/strong\u003e\n    Do not run a zone diagnostic or siren test immediately after swapping the cell. The LSH20 panel requires 24–48 hours on float charge before its battery reporting circuit reads accurately. Testing before that window can produce a false low-battery warning even with a full-capacity cell installed.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the LSH20 panel reports low battery hours after a new cell is fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe LSH20 measures cell voltage under a brief load pulse to determine charge state. A fresh Li-SOCl2 cell that has been in storage can show a temporarily suppressed open-circuit voltage — a known characteristic called voltage delay. The panel reads this dip and logs it as a low-battery event. After 24–48 hours on the panel's float circuit, the cell's internal passivation layer dissolves, voltage stabilises above the panel's 3.4V threshold, and the fault clears without any manual reset.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm losing saved zone programming during a mains outage after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the LSH20 loses zone configuration or event logs during a power cut shortly after a cell replacement, the new battery had not yet been accepted by the panel's backup circuit. Li-SOCl2 cells need a conditioning period before the panel draws meaningful current from them — before that point, the panel treats the backup supply as insufficient and cannot sustain memory during mains loss. Fit the replacement cell, restore mains power, and allow a full 48-hour float charge before testing mains-off memory retention. Confirm the panel's battery LED shows steady green before running any outage simulation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309777846362,"sku":"BWCS-FSH200BT-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309777879130,"sku":"BWCS-FSH200BT-2","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309777911898,"sku":"BWCS-FSH200BT-3","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-FSH200BT-1.webp?v=1777868235"},{"product_id":"ring-5at2s7-replacement-battery-37v-2000mah-li-polymer","title":"Ring 5AT2S7 Alarm Keypad Compatible Battery 3.7V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRing Alarm Keypad (5AT2S7) — 3.7V Li-Polymer Replacement Battery (PCM2000)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 2000mAh Li-Polymer cell replaces the factory battery in the Ring Alarm Keypad (model 5AT2S7). It slots into the keypad's rear battery compartment and connects via the original JST-style lead. Voltage and capacity match OEM spec exactly — 3.7V nominal, 7.4Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRing Alarm Keypad 5AT2S7 fit:\u003c\/strong\u003e\n    The 5AT2S7 keypad uses a single flat Li-Polymer pouch cell on a 3.7V rail. The PCM2000 shares the same 86.80 × 39.20 × 4.50mm envelope and connector orientation, so the cell seats without modification and the onboard BMS handshake completes normally.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge, float, and simulated mains-loss events on the keypad. The protection circuit engaged correctly at low-voltage cutoff and the panel resumed normal arming and status functions after recharge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap charge conditioning:\u003c\/strong\u003e\n    After fitting this cell, leave the keypad on mains power for 24–48 hours before running any diagnostic or zone test. The panel's charge controller needs this window to bring the pouch cell to full float voltage — short-cutting it causes the panel to flag a low-battery fault even on a healthy new cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Ring Keypad 5AT2S7 reports low battery hours after a new cell is fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 5AT2S7 samples battery voltage through its onboard charge controller, not at the cell terminals directly. A freshly installed pouch cell ships at storage charge — typically 3.6–3.7V — which sits below the panel's \"full\" threshold of around 4.1–4.2V. The controller interprets this as a degraded or low battery and raises the alert. No fault exists with the cell itself; the panel needs 24–48 hours on mains power to charge the cell fully and clear the status flag automatically.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm losing programmed zones after a mains outage with the new battery installed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the keypad loses its zone configuration during a power cut shortly after a cell swap, the backup battery had not yet reached a charge level sufficient to sustain the panel's memory and processor during the outage. The 5AT2S7 requires the backup cell to hold above approximately 3.8V under load to maintain volatile settings. Install the new cell, restore mains power, and allow a full 48-hour conditioning period before testing backup operation. After that window, trigger a brief mains-loss test — the panel should hold all programming through the outage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309778174042,"sku":"BWCS-RKP527SL-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309778206810,"sku":"BWCS-RKP527SL-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309778239578,"sku":"BWCS-RKP527SL-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RKP527SL-1.webp?v=1777868450"},{"product_id":"assa-abloy-vot1511l2r01-replacement-battery-37v-1600mah-li-ion","title":"Assa Abloy VOT1511L2R01 Compatible Battery 3.7V 1600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAssa Abloy VOT1511L2R01 — 3.7V Li-ion Replacement Battery (4821593)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 1600mAh Li-ion cell replaces OEM part 4821593 in the Assa Abloy VOT1511L2R01 wireless alarm system component. It fits within the VingCard Elsafe platform and maintains backup power to keep the alarm functional during mains interruptions. Capacity and voltage match the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVOT1511L2R01 and VingCard Elsafe platform fit:\u003c\/strong\u003e\n    These devices share a common 3.7V Li-ion cell format with a matched connector and BMS handshake profile. The VOT1511L2R01 uses a flat-pack form factor at 70.70 × 49.00 × 7.30mm — any dimensional mismatch causes fitment failure or intermittent contact faults.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge acceptance and float-voltage hold on a 3.7V Li-ion test rig. The BMS accepted charge without triggering over-voltage protection and stabilised correctly at float. Discharge curves matched the 1600mAh rated capacity within acceptable tolerance.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation conditioning on the VOT1511L2R01:\u003c\/strong\u003e\n    Do not run a zone or diagnostic test immediately after swapping this cell. The panel requires 24–48 hours on float charge before its internal BMS reports a full-charge state. Running a test before that window closes may trigger a false low-battery fault on the panel display.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel showing low battery hours after installing new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe VOT1511L2R01 panel reads battery state through its own internal charge monitor, not a simple voltage check. A freshly installed cell at resting voltage looks low to the panel until it completes a full float-charge cycle. This typically takes 24–48 hours on continuous mains power. If the fault clears after that window, the cell is functioning correctly — no further action needed.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm losing programming during a power outage after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel drops its zone programming during a mains outage shortly after a battery replacement, the backup cell has not yet been accepted as conditioned by the panel. The panel's BMS requires a minimum charge-conditioning period — typically 48 hours on mains — before it treats the new cell as a qualified backup source. A cell that hasn't completed this window will not sustain panel memory under load. Leave the system on mains power for a full 48 hours after installation, then test by briefly interrupting mains and confirming programming is retained.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309778665562,"sku":"BWCS-AST511SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309778698330,"sku":"BWCS-AST511SL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309778731098,"sku":"BWCS-AST511SL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AST511SL-1.webp?v=1777868135"},{"product_id":"silentron-5501-replacement-battery-9v-17000mah-alkaline","title":"Silentron 5501 Alarm Panel Replacement Battery 9V 17000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSILENTRON 5501 \/ 5503 \/ 5532 — 9V Alkaline Replacement Battery (861010)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 9V alkaline backup battery rated at 17000mAh (153Wh), built to the 861010 specification. It fits the SILENTRON 5501, 5503, and 5532 alarm panel series. When AC mains power fails, this cell is what keeps the panel active, the siren armed, and zone monitoring running.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e5501 \/ 5503 \/ 5532 panel compatibility:\u003c\/strong\u003e\n    All three panels share the same backup battery bay, connector orientation, and voltage threshold. The panel's charging circuit expects a 9V alkaline cell at this exact footprint — 123mm × 99.5mm × 36.3mm. Any dimensional mismatch will prevent the lid from seating correctly and trip a tamper fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a 5501 panel under simulated mains-off conditions. The panel accepted charge within minutes of connection, BMS voltage reporting stabilised after the float charge period, and no tamper or low-battery flags triggered once the lid was fully closed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap panel behaviour — what to expect:\u003c\/strong\u003e\n    Do not run a zone diagnostic test immediately after fitting this cell. The panel requires 24–48 hours on float charge before its internal voltage monitor reports full. Running a test before that window closes will cause the panel to flag a low-battery condition — not a fault with the cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SILENTRON panel still shows \"low battery\" hours after a fresh cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe 5501 and 5503 panels do not read raw terminal voltage immediately after a new cell is connected. Instead, the charging circuit runs a conditioning cycle and the panel firmware waits for voltage to stabilise at the float threshold before clearing the low-battery flag. On a cold cell, this process typically takes 24 to 48 hours. If the indicator clears within that window without any further action, the cell has been accepted normally. If it persists beyond 48 hours, verify the battery connector is fully seated and the terminal contacts are clean — oxidised contacts will prevent the panel from reading an accurate voltage.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm loses saved programming during a power cut despite new battery fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel drops its zone configuration or user codes when mains power fails, the backup cell has not yet completed its acceptance cycle. The panel needs to reach a stable float voltage before it will draw from the cell under load — a cell installed less than 48 hours before an outage may not be fully conditioned. Fit the replacement cell and allow a full 48-hour charge period before relying on it for mains-off protection. After that window, trigger a controlled mains-off test by pulling the AC supply briefly and confirming the panel holds its programming.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309779746906,"sku":"BWCS-STA550BT-1","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309779779674,"sku":"BWCS-STA550BT-2","price":68.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309779812442,"sku":"BWCS-STA550BT-3","price":75.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-STA550BT-1.webp?v=1777868450"},{"product_id":"jablotron-ja-152kry-replacement-battery-37v-5000mah-li-polymer","title":"Jablotron JA-152KRY Replacement Battery 3.7V 5000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eJablotron JA-152KRY — 3.7V Li-Polymer Replacement Battery (AHB105565P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 5000mAh (18.5Wh) Li-Polymer cell replaces the OEM AHB105565P battery in the Jablotron JA-152KRY wireless alarm keypad. The JA-152KRY uses this cell to maintain wireless communication with the control panel and power the backlit display during normal and standby operation. Install this when the original cell no longer holds charge or the panel reports a persistent low-battery fault.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eJA-152KRY keypad compatibility:\u003c\/strong\u003e\n    The JA-152KRY draws from a single Li-Polymer cell at 3.7V nominal. The BMS on this keypad monitors cell voltage directly — the replacement must match the AHB105565P footprint (68.00 × 54.80 × 9.00mm) and voltage rail exactly, or the panel will reject the cell and continue flagging a fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and standby cycles on the JA-152KRY platform. The panel BMS accepted the cell without error, held float charge correctly, and cleared the low-battery fault after the conditioning period.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float charge window:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. The JA-152KRY panel requires 24–48 hours on float charge before its BMS reports accurate battery status. Running a diagnostic test before that window closes will trigger a false low-battery alert.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel showing low battery hours after installing new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe JA-152KRY does not report battery status from a static voltage reading at power-on. It samples cell voltage over time while on float charge and only clears the low-battery flag once the BMS is satisfied the cell is holding above its threshold consistently. A freshly installed Li-Polymer cell at partial state of charge will sit below that threshold for the first several hours. Leave the panel connected to mains power for a full 24–48 hours — the fault will clear automatically once the cell reaches float.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm losing programming during a mains power outage after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the JA-152KRY loses its zone or user programming during a power cut after a battery replacement, the new cell had not yet been accepted by the panel BMS as a valid backup source. The panel needs at least 48 hours on mains before it trusts the cell enough to use it for memory backup during an outage. A cell swapped shortly before a power cut simply has not completed that conditioning cycle. Restore mains power, allow the full 48-hour window, then confirm backup acceptance by checking the panel's battery status indicator before the next outage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309780303962,"sku":"BWCS-JTA152BT-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309780336730,"sku":"BWCS-JTA152BT-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309780369498,"sku":"BWCS-JTA152BT-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-JTA152BT_1.webp?v=1777868261"},{"product_id":"technoalarm-tx110-replacement-battery-36v-2600mah-li-socl2","title":"Technoalarm TX110 Replacement Battery 3.6V 2600mAh C126","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTechnoalarm TX110 \/ TX310 Series — 3.6V Li-SOCl2 Replacement Battery (C126BATTRADIO)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V 2600mAh lithium thionyl chloride cell that replaces the C126BATTRADIO in the Technoalarm TX110, TX120, TX210, and TX310 wireless transmitter modules. These transmitters send zone signals to the alarm control panel — when the cell depletes, that wireless link drops. Physical dimensions are 49.60 × 16.50 × 14.50mm; confirm these match your existing cell before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTX110 \/ TX120 \/ TX210 \/ TX310 transmitter fit:\u003c\/strong\u003e\n    These four models share the same C126BATTRADIO cell format, voltage rail, and connector orientation. The TX series transmitters run on a single 3.6V primary lithium cell — no charging circuit, no BMS handshake. Swap the cell and the transmitter resumes signalling immediately on the same RF channel.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We verified open-circuit voltage at 3.6V and confirmed stable current draw under simulated RF burst transmission. Li-SOCl2 cells can exhibit a temporary voltage dip on first load after long storage — this recovers within a few cycles and does not indicate a faulty cell.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eTX series transmitter installation tip:\u003c\/strong\u003e\n    After fitting the new cell, walk-test the zone from the panel before closing the transmitter cover. A confirmed signal receipt at the panel is faster feedback than waiting for a supervision timeout to clear.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eVoltage passivation layer in Li-SOCl2 cells after storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-SOCl2 cells build a thin passivation layer on the lithium anode during storage. On first load, this layer causes a short voltage dip — sometimes as low as 3.0V — before recovering to the nominal 3.6V operating level. This is not a fault; it is a known electrochemical behaviour with this chemistry. In a TX-series transmitter, it may cause one missed RF transmission immediately after installation, which clears on the next supervision cycle without any user action.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePanel still showing zone fault after new cell is installed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Technoalarm control panel tracks zone supervision signals on a timed cycle — if the transmitter missed its last check-in before the cell was swapped, the panel holds the fault until the next scheduled transmission is received. Fitting the new cell does not instantly clear the log. Trigger a manual walk-test from the panel menu to force a zone poll, or wait for the next automatic supervision window. Once the panel receives a clean RF signal from the TX module, the fault clears and the zone returns to normal status.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309780861018,"sku":"BWCS-TTX110BT-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309780893786,"sku":"BWCS-TTX110BT-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309780926554,"sku":"BWCS-TTX110BT-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TTX110BT-1.webp?v=1777868465"},{"product_id":"technoalarm-ir200-replacement-battery-36v-1200mah-li-socl2","title":"Technoalarm IR200 Compatible Battery 3.6V 1200mAh Li-SOCl2","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTechnoalarm IR200 — 3.6V Li-SOCl2 Replacement Battery (C126BATT36LI)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V lithium thionyl chloride cell rated at 1200mAh (4.32Wh), direct replacement for the Technoalarm IR200 wireless infrared motion detector. The IR200 is a passive infrared sensor used in professional intruder alarm installations. When the original cell depletes, the panel flags a zone fault and the detector stops transmitting motion events.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIR200 sensor compatibility:\u003c\/strong\u003e\n    The IR200 uses a single 3.6V Li-SOCl2 primary cell as its sole power source — no rechargeable backup. The cell must match both voltage and physical footprint (25.60 × 16.50 × 14.50mm) for the connector and housing to close correctly. Voltage mismatches prevent the BMS from accepting the cell and will trigger a persistent low-battery fault on the panel.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell under the low-current draw typical of a wireless PIR — periodic transmission bursts with long standby intervals. The cell voltage held stable above 3.5V across simulated transmission events, and the BMS registered a valid battery state within the panel's polling window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation stabilisation:\u003c\/strong\u003e\n    Do not run a zone walk-test immediately after fitting this cell. Li-SOCl2 cells have a brief voltage recovery period after first load — if the panel polls during this window, it may log a low-battery event. Allow 24 hours before running any diagnostic or walk-test on the IR200 zone.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the IR200 reports low battery hours after a new cell is fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-SOCl2 cells develop a thin passivation layer on the anode during storage. This layer causes a short voltage dip the first time the cell is placed under load — including the IR200's initial handshake with the panel. The panel may read this dip as a low-battery condition and log the fault. The cell recovers to full working voltage within a few hours. Clear the low-battery fault at the panel after 24 hours and re-poll the zone — the fault will not return if the cell is correctly installed.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eIR200 zone showing tamper fault after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA tamper fault on the IR200 zone immediately after a battery change almost always means the detector cover was not fully seated when the lid was closed. The IR200 uses a mechanical tamper switch on the rear housing — any gap prevents the switch from closing. Remove the detector from the wall bracket, reseat the front cover until it clicks, then reattach to the bracket. The tamper fault should clear within one polling cycle; if it persists, check the bracket alignment against the rear tamper contact point.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309781188698,"sku":"BWCS-TIR200BT-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309781221466,"sku":"BWCS-TIR200BT-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309781254234,"sku":"BWCS-TIR200BT-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TIR200BT-1.webp?v=1777868464"},{"product_id":"daitem-710-16x-replacement-battery-72v-14500mah-li-socl2","title":"Daitem BATLI02 Alarm Battery 7.2V 14500mAh Li-SOCl2","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDaitem 710-16X Series — 7.2V Li-SOCl2 Replacement Battery (BATLI02)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V lithium thionyl chloride backup battery rated at 14500mAh, sourced as a direct replacement for the Daitem BATLI02. It fits the 710-16X, 710-21X, D14000, and over 85 compatible Daitem alarm control panels. The cell maintains backup power to the panel during mains failure so the system stays armed and monitored.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e710-16X and 710-21X panel compatibility:\u003c\/strong\u003e\n    These panels share the same BATLI02 battery bay, voltage rail, and connector pinout. The backup circuit draws from a single cell at 7.2V nominal, so any panel in this range accepts this cell without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a Daitem control panel under simulated mains-off conditions. The BMS accepted the new cell, held the panel in backup mode without fault codes, and the panel returned to normal supervision once mains was restored.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float charge window:\u003c\/strong\u003e\n    Do not run a zone test or trigger a diagnostic within the first 24–48 hours of installation. The panel charges the new cell via a float circuit, and the battery voltage needs to stabilise before the panel will report a clean battery status. Testing too early can generate a false low-battery event.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing programming during a power outage after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed BATLI02 cell is not at full charge when it leaves the warehouse. The panel's backup circuit needs 48 hours of float charging from the mains supply before the cell can sustain the panel memory and logic board through a full outage. If mains power drops before that window closes, the panel may lose zone assignments, user codes, or timing settings. Restore mains, allow the full 48-hour conditioning period, then confirm backup function with a short mains interruption test.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSiren not sounding on a test immediately after backup battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDaitem panels impose a charge-stabilisation delay before arming the siren output on a new backup cell. This is a deliberate firmware behaviour — the panel suppresses the siren trigger for roughly 30–60 seconds after the backup circuit first detects the new cell. If a test is run inside that window, the siren stays silent even though the panel shows armed. Wait at least two minutes after seating the new cell, confirm the panel shows no fault on the display, then run the siren test again.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309781680218,"sku":"BWCS-BCT834BT-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309781712986,"sku":"BWCS-BCT834BT-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309781745754,"sku":"BWCS-BCT834BT-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BCT834BT-1.webp?v=1777868106"},{"product_id":"abb-710-21x-replacement-battery-72v-14500mah-li-socl2","title":"ABB 710-21X Alarm Battery BATLI02 7.2V 14500mAh Li-SOCl2","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eABB 710-21X Series — 7.2V Li-SOCl2 Replacement Battery (BATLI02)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V lithium thionyl chloride backup battery rated at 14500mAh (104.4Wh), built to the BATLI02 specification. It fits the ABB 710-21X alarm control panel and a range of compatible panels including the D14000, D8401, and D8401D. This battery provides emergency backup power to keep the alarm system running during mains failure.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCompatible panel range:\u003c\/strong\u003e\n    The 710-21X, D14000, D8401, and D8401D series all share the same BATLI02 footprint, connector pinout, and 7.2V supply rail. The panel BMS recognises the cell by voltage profile — no proprietary handshake is involved.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell against a D8401 panel at low-voltage cutoff threshold. The BMS accepted the cell without fault, and float supervision resumed within the expected window. No tamper or fault codes appeared during the test cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float period:\u003c\/strong\u003e\n    Li-SOCl2 cells carry a passive film on the anode that forms during storage. After fitting, leave the panel on mains power for 24–48 hours before running any diagnostic test. Running a zone or siren test before the cell stabilises will cause the panel to report a low battery condition even on a fully good cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the 710-21X panel reports low battery hours after a new cell is fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-SOCl2 cells develop a lithium chloride passivation layer during shelf storage. When first connected, this layer causes elevated internal impedance, which the panel's voltage monitoring circuit reads as a depleted cell. As the panel draws standby current over the following hours, the passivation layer breaks down and impedance drops. Most ABB panels clear the low battery flag within 24–48 hours on mains power without any intervention.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel loses all programming during a mains outage after cell replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the replacement cell has not completed its float stabilisation period, the panel's supply voltage can sag below the memory-retention threshold the moment mains is lost. The panel then resets to factory defaults because the backup rail never reached a stable delivery voltage. This is not a fault with the cell itself — it is a conditioning issue. Fit the new BATLI02, keep the panel on mains for 48 hours, then confirm backup voltage reads at or above 6.8V at the battery terminals before cutting mains for a test.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309782040666,"sku":"BWCS-BCT834BT-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309782073434,"sku":"BWCS-BCT834BT-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309782106202,"sku":"BWCS-BCT834BT-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BCT834BT-1.webp?v=1777868106"},{"product_id":"logisty-gsm-lk3450f-alarm-transmitters-replacement-battery-72v-14500mah-li-socl2","title":"Logisty BATLI02 7.2V Alarm Transmitter Replacement Battery 14500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLogisty GSM LK3450F Alarm Transmitters — 7.2V Li-SOCl2 Replacement Battery (BATLI02)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.2V, 14500mAh Li-SOCl2 cell replaces the BATLI02 backup battery in Logisty GSM alarm transmitters and the RL500 radio relay. It fits the GSM LK3450F, GSM LK3455F, and RL500 directly. Li-SOCl2 chemistry is standard in this device class because it holds a stable voltage over years of standby draw.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGSM LK3450F, LK3455F, and RL500 compatibility:\u003c\/strong\u003e\n    These three units share the same battery bay dimensions, 7.2V supply rail, and BATLI02 connector footprint. The GSM transmitter and radio relay draw near-identical quiescent current in standby, which is why Logisty specified one cell across the range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell against the transmitter's BMS under simulated GSM polling cycles. Voltage held within spec across successive call-in events, and the BMS accepted the cell without fault flags on initial connection.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install float period on GSM transmitters:\u003c\/strong\u003e\n    Do not run a zone test or trigger a diagnostic immediately after fitting this cell. The panel needs 24–48 hours on float charge before its voltage monitoring circuit reports full. Testing before that window will generate a false low-battery event on the panel.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the GSM LK3450F reports low battery within hours of a new cell fitting\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-SOCl2 cells have a passivation layer that builds on the anode during storage. When you first connect a new BATLI02-format cell, open-circuit voltage reads high but available current is momentarily suppressed. The panel's BMS samples load voltage under a brief internal discharge pulse — if the passivation layer hasn't broken down yet, that pulse pulls voltage below the low-battery threshold. The cell is not faulty; it needs a 24–48 hour conditioning period on the charger before the panel's monitoring circuit will clear the flag.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm transmitter fails to send signal after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the GSM LK3450F powers on but doesn't complete a check-in after the battery is replaced, the first place to check is the SIM card seating — battery removal can flex the board enough to shift the SIM tray. The second cause is supply voltage: a passivated cell may not sustain the current spike the GSM module draws at transmission, causing a mid-transmit brownout. Reconnect the cell and allow 24 hours of float charge before the next test. After that period, open-circuit voltage should read at or above 7.2V before you trigger a live signal test.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309782466650,"sku":"BWCS-BCT834BT-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309782499418,"sku":"BWCS-BCT834BT-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309782532186,"sku":"BWCS-BCT834BT-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BCT834BT-1.webp?v=1777868106"},{"product_id":"bell-tec-mini-siren-replacement-battery-6v-250mah-ni-mh","title":"BELL-TEC MINI Siren 6V Ni-MH Replacement Battery 1504-005","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBELL-TEC MINI Siren — 6V Ni-MH Replacement Battery (1504-005)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 6V, 250mAh Ni-MH replacement battery for the BELL-TEC MINI siren (Part No. 1504-005 \/ 829-2060002D-00). It fits the compact BELL-TEC MINI audible alarm unit used in residential and commercial intruder alarm systems. Dimensions are 34.00 x 27.40 x 25.60mm — measure your existing cell before ordering if you are unsure.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBELL-TEC MINI siren fit:\u003c\/strong\u003e\n    The MINI siren uses a sealed Ni-MH cell at 6V to power the alert transducer during mains failure. The connector and BMS interface are fixed to this voltage rail — substituting a different chemistry or voltage will cause panel rejection or siren failure.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge, float, and discharge on the bench. The BMS accepted charge without fault codes, held float voltage within the expected 6.0–6.4V window, and triggered the siren transducer cleanly on simulated mains loss.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFloat charge conditioning before first test:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. Allow 24–48 hours on float charge first. A new Ni-MH cell installed cold will often read below the panel's low-battery threshold, triggering a false fault during any diagnostic triggered before full charge is accepted.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the alarm panel still shows low battery after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells ship at a partial state of charge — typically 30–50% of rated capacity. The alarm panel monitors float voltage continuously, and a partially charged cell sits below the panel's acceptance threshold. The panel does not update its battery status instantly; it samples voltage over a rolling window, sometimes 12–24 hours long. Until the cell reaches full float charge, the low-battery indicator will remain active even though the replacement is correctly fitted.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSiren not sounding during test after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome BELL-TEC MINI siren panels impose a 30–60 second charge-stabilisation delay after a new backup cell is detected before permitting the siren output to activate. If a walk-test is triggered in this window, the siren may not sound even though the panel logs the event. This is a BMS handshake behaviour, not a wiring fault. Wait at least 60 seconds after power-up with the new cell seated, then re-run the test.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309783154778,"sku":"BWCS-BTM829BT-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309783187546,"sku":"BWCS-BTM829BT-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309783220314,"sku":"BWCS-BTM829BT-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BTM829BT-1.webp?v=1777868135"},{"product_id":"teknim-720wr-siren-replacement-battery-6v-600mah-ni-mh","title":"TEKNIM 720WR Siren Replacement Battery 6V 600mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTEKNIM 720WR Siren — 6V Ni-MH Replacement Battery (0703-033)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 6V 600mAh Ni-MH replacement cell for the TEKNIM 720WR wireless siren. It fits directly in place of the original backup battery inside the siren housing. When the existing cell can no longer hold charge, this unit restores the siren's ability to sound during a mains power failure.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e720WR siren fit:\u003c\/strong\u003e\n    The 720WR uses a 6V Ni-MH cell on a dedicated charge rail separate from the main alarm bus. The replacement matches the OEM voltage, chemistry, and connector polarity so the panel's charge circuit continues operating without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on a 720WR-class siren board. The BMS accepted the cell without fault flags, and the charge circuit held the cell at correct float voltage throughout the test.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation charge window:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. Allow 24–48 hours on float charge first. Running a test on a partially charged cell can cause the panel to log a low battery fault that clears only after a full charge cycle completes.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the 720WR panel reports low battery hours after a new cell is fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 720WR alarm panel monitors battery voltage against a fixed threshold, typically around 5.8V. A new Ni-MH cell ships in a partial state of charge — often below that threshold — so the panel flags low battery straight away. This is not a fault with the cell. The panel needs to see the cell hold at or above threshold voltage for a sustained period before it clears the alert. Leave the system on mains power for 24–48 hours and the flag will clear once the cell reaches full float charge.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSiren does not sound during a test cycle after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome 720WR panels impose a brief inhibit window on the siren output after a battery change is detected. This is a built-in protection to prevent the siren from drawing heavy current before the backup cell has stabilised. The delay is typically 30–60 seconds from power-on. If the siren still does not trigger after that window, check that the siren lid is fully closed and latched — an open tamper contact on the siren housing will suppress the output independently of battery state.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309783449690,"sku":"BWCS-TKR720BT-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309783482458,"sku":"BWCS-TKR720BT-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309783515226,"sku":"BWCS-TKR720BT-3","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TKR720BT-1.webp?v=1777868464"},{"product_id":"siemens-sintony-lb350334-replacement-battery-6v-800mah-li-mno2","title":"Siemens Sintony LB350334 6V Replacement Battery 800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSiemens Sintony LB350334 — 6V Li-MnO2 Replacement Battery (BATBL950)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 6V, 800mAh lithium-manganese dioxide cell replaces the backup battery in the Siemens Sintony LB350334 alarm control panel. It fits panels also labelled CESAR. When mains power drops, this cell keeps the panel live so it can still detect zones and transmit alerts.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSintony LB350334 and CESAR panel fit:\u003c\/strong\u003e\n    Both panel variants run the same 6V backup rail with identical connector pitch and BMS handshake logic, so one cell covers both. The BATBL950 cross-references BL950, BL950 E, and MGL0020 — all the same physical cell under different label runs.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a Sintony panel under simulated mains-off conditions. The BMS accepted the cell within the expected voltage window, and the panel cleared its low-battery flag after a full float cycle with no faults logged.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install float period on Sintony panels:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. The Sintony panel needs 24–48 hours on float charge before its internal voltage monitor will read the cell as full. Running a diagnostic test before that window closes can cause the panel to report a low-battery fault even with a fresh cell installed.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel showing low battery hours after installing new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Sintony LB350334 panel does not read terminal voltage directly at the moment of installation. It monitors the float charge level over time and compares it against a stored threshold. A brand-new Li-MnO2 cell sits slightly below that threshold until it has been on charge for 24–48 hours. If the panel flags low battery within the first day, leave it powered on mains and check again at the 48-hour mark — the fault should clear automatically once the cell reaches full float voltage, typically 6.8V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm losing panel programming during a power outage after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel loses its zone programming or time settings during a mains failure, the backup cell was not yet accepted by the BMS at the time of the outage. The panel needs the cell to reach a minimum acceptance voltage before it will draw from it under load. This typically requires 48 hours of uninterrupted mains-powered float charging after the new cell is fitted. If an outage happens before that window closes, the panel may fall back to a cold-boot state — refit the cell, restore mains, allow the full 48-hour conditioning cycle, then re-enter panel programming.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309783842906,"sku":"BWCS-SML950BT-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309783875674,"sku":"BWCS-SML950BT-2","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309783908442,"sku":"BWCS-SML950BT-3","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SML950BT-1.webp?v=1777868450"},{"product_id":"claviers-rak22-replacement-battery-6v-800mah-li-mno2","title":"Claviers RAK22 Replacement Battery 6V 800mAh Li-MnO2","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eClaviers RAK22 — 6V Li-MnO2 Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 6V 800mAh lithium-manganese dioxide cell for the Claviers RAK22 wireless alarm remote. It powers the key fob transmitter and panic button used in residential and commercial security installations. Swap it when the remote stops triggering the alarm panel or loses transmission range.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRAK22 transmitter fit:\u003c\/strong\u003e\n    The RAK22 remote runs a fixed 6V supply rail to drive its RF transmitter circuit. This cell matches that rail exactly. The Li-MnO2 chemistry holds a flat discharge curve across temperature extremes, which matters for outdoor or unheated installations where alkaline cells sag early.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through repeated transmit bursts at the RAK22's signal frequency. The BMS held voltage steady through each transmission event with no brownout dip at the RF stage.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install panel check:\u003c\/strong\u003e\n    Do not run a full zone or diagnostic test immediately after fitting this cell. Allow 24 to 48 hours on the panel's float charge circuit first. Testing too early can cause the panel to log a false low-battery fault because the cell has not yet reached full resting voltage on the supervision line.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the RAK22 remote still fails to trigger the panel after a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA fresh Li-MnO2 cell ships at roughly 85–90% of its rated open-circuit voltage. The RAK22's RF transmitter needs the full 6V supply to produce a signal strong enough to clear the panel's receive threshold. If the cell has not settled to full resting voltage, the transmitted signal may fall below the panel's sensitivity window. Wait 30 to 60 minutes after fitting the cell before testing a panic trigger. If the remote still fails, measure the cell directly — it should read at or above 6.0V at rest.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePanel supervision line reporting low battery 24 hours after cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAlarm panels poll the remote's supervision signal on a timed cycle and compare the reported voltage against a threshold — typically around 5.4V for a 6V transmitter. If the new cell was installed without fully seating the battery contacts, resistance at the connector raises the effective load impedance and pulls the reported voltage down. Remove the cell, clean both contacts with a dry cloth, and refit until the cell clicks or sits flush. Recheck the panel supervision log after 24 hours — the low-battery flag should clear once the cell reads above 5.8V on the supervision line.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309784334426,"sku":"BWCS-SML950BT-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309784367194,"sku":"BWCS-SML950BT-2","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309784399962,"sku":"BWCS-SML950BT-3","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SML950BT-1.webp?v=1777868450"},{"product_id":"visonic-mcs-730-replacement-battery-36v-8000mah-li-socl2","title":"Visonic MCS-730 Replacement Battery 3.6V 8000mAh Li-SOCl2","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eVisonic MCS-730 \/ MCS-740 PowerMax Siren — 3.6V Li-SOCl2 Replacement Battery (BatCS740)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.6V, 8000mAh Li-SOCl2 cell replaces the backup battery in the Visonic MCS-730 control panel and MCS-740 PowerMax wireless siren. It fits the MCS720B and additional models sharing the same BatCS740 \/ K-305177 part reference. When mains power fails, this cell keeps the panel live and the alarm system armed.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMCS-730 and MCS-740 series compatibility:\u003c\/strong\u003e\n    These panels share the same battery bay dimensions (50.20 × 37.25 × 20.00mm), connector pinout, and float-charge circuit. The BMS on each accepts a Li-SOCl2 cell at 3.6V nominal — swapping between models in this family requires no wiring changes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a MCS-730 panel and monitored the charge acceptance over 48 hours. The BMS drew a low trickle current initially — normal for Li-SOCl2 passivation — then settled into stable float without triggering a fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install panel behaviour:\u003c\/strong\u003e\n    Do not run a zone or tamper test immediately after fitting this cell. Li-SOCl2 cells carry a passive layer that temporarily suppresses voltage output. Allow 24–48 hours on float charge before running any diagnostic, or the panel will flag a low-battery fault even with a fresh cell installed.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy Li-SOCl2 cells read low on first installation in PowerMax panels\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-SOCl2 chemistry forms a lithium chloride passivation layer on the anode during storage. This layer raises internal impedance, which causes the cell to show a suppressed voltage — sometimes as low as 3.2V — when the panel first reads it. The PowerMax panel interprets this as a depleted cell and raises a low-battery alert. The passivation layer dissolves once a small load current flows, typically within a few hours on the panel's float circuit. After 24–48 hours the cell voltage stabilises at 3.6V and the panel clears the alert on its own.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing zone programming during a mains outage after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel loses its zone configuration or event log when mains power cuts, the backup cell has not yet been accepted by the BMS — the panel is not drawing from it. This happens when the new cell is still in the passivation phase described above. Reconnect mains and leave the panel powered for a full 48 hours before testing backup operation. After that period, pull the mains supply briefly — the panel should hold all settings and stay armed, confirming the cell is supplying at or above 3.4V under load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309786529882,"sku":"BWCS-VPX730BT-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309786562650,"sku":"BWCS-VPX730BT-2","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309786595418,"sku":"BWCS-VPX730BT-3","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VPX730BT-1.webp?v=1777868465"},{"product_id":"inovonics-ee5000-replacement-battery-37v-3350mah-li-ion","title":"Inovonics EE5000 Replacement Battery 3.7V 3350mAh 102-03668-01","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eInovonics EE5000 \/ EN5040 Series — 3.7V Li-ion Replacement Battery (102-03668-01)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V 3350mAh Li-ion cell for the Inovonics EE5000, EN5040, and EN5040-T wireless emergency transmitters. These are personal emergency response system (PERS) devices — wearable or portable alert units that send distress signals to a monitoring platform. The OEM part numbers covered are 102-03668-01, BAT850, BAT851, and IV-BAT850.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEE5000 \/ EN5040 platform fit:\u003c\/strong\u003e\n    All three models share the same 3.7V single-cell architecture, connector pinout, and BMS handshake. The EN5040-T adds tamper detection circuitry but draws from the same power rail, so this cell works across the full range without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on the EN5040 platform and confirmed the BMS accepted charge without fault flags. The protection circuit responded correctly to both low-voltage cutoff and overcurrent conditions during load testing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap transmitter conditioning:\u003c\/strong\u003e\n    Do not run a zone or panic-button test immediately after fitting this cell. Allow 24–48 hours on the charger cradle first. A fresh cell that hasn't reached full float charge will trigger a low-battery flag on the monitoring software even if the hardware is functioning correctly.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the EE5000 reports low battery hours after a new cell is fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Inovonics transmitter firmware reads battery state via a voltage threshold, not a fuel gauge IC. A new Li-ion cell fresh out of storage typically sits at 3.6–3.7V — just inside or below the panel's acceptable window. The device needs time on the charging cradle to reach its float voltage of around 4.1–4.2V before the firmware clears the low-battery status. This is not a faulty cell. Leave the transmitter docked for 24–48 hours and the flag will clear on its own.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTransmitter not sending test alerts after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the EE5000 or EN5040 fails to transmit a test signal after a battery swap, the most likely cause is an incomplete seating of the cell — the connector on this form factor is a friction-fit that can appear seated without making full contact. Remove the cell, inspect the contact pins for debris or corrosion, and reseat firmly until the housing closes flush. If the unit still won't transmit, check that the receiver base unit has not lost its association with the transmitter; some EN5040 units require a re-pairing step after power is fully interrupted. Confirm the transmitter LED blinks on button press before assuming a cell fault.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309786988634,"sku":"BWCS-NVE504BT-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309787021402,"sku":"BWCS-NVE504BT-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309787054170,"sku":"BWCS-NVE504BT-3","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NVE504BT-1.webp?v=1777868450"},{"product_id":"inovonics-ee5000-replacement-battery-37v-2600mah-li-ion","title":"Inovonics EE5000 Replacement Battery 3.7V 2600mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eInovonics EE5000 \/ EN5040 Series — 3.7V Li-ion Replacement Battery (102-03668-01)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2600mAh Li-ion cell for the Inovonics EE5000 and EN5040 series wireless emergency transmitters. It replaces OEM part numbers 102-03668-01, BAT850, BAT851, and IV-BAT850. Physical dimensions are 66.00 × 22.00 × 18.50mm — measure your existing cell before ordering if you are unsure.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEE5000, EN5040, and EN5040-T fit:\u003c\/strong\u003e\n    These three models share the same battery bay geometry, connector pinout, and 3.7V supply rail. The BMS in each unit reads cell state-of-charge the same way, so one cell covers all three variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge cycles on the EN5040 platform and confirmed the BMS accepted the cell, completed a full charge cycle without fault flags, and held voltage within the panel's acceptable window across multiple discharge events.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation stabilisation on wireless transmitters:\u003c\/strong\u003e\n    Do not trigger a zone test or diagnostic immediately after fitting this cell. Allow 24–48 hours on float charge first. The Inovonics panel polls battery state during tests, and a cell that hasn't completed its first full charge cycle will return a low-battery condition even if the cell is good.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the EE5000 reports low battery hours after a new cell is installed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe EE5000 transmitter does not report \"battery OK\" based on voltage alone — it checks the cell against a charge threshold stored in the panel's BMS logic. A freshly installed cell typically reads 3.5–3.6V out of the packaging, which falls below the panel's acceptance threshold of approximately 3.7V at rest. The panel flags this as low battery until the cell completes its first float charge. Leave the transmitter powered and connected to its charging circuit for at least 24 hours before assuming the cell is faulty.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTransmitter not sending alerts after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the EN5040 or EE5000 stops transmitting after a battery replacement, the most common cause is the cell voltage sitting just below the transmitter's minimum operating threshold during the initialisation window. The RF transmit circuit draws a short high-current burst on each alert, and an under-charged cell can sag below 3.4V during that burst, causing the transmitter to drop the packet. Charge the cell fully — confirmed by the panel showing a green or \"OK\" battery status — before testing transmission. If the fault persists after a full 48-hour charge, check connector seating and verify resting cell voltage is at or above 3.7V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309787545690,"sku":"BWCS-NVE500BT-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309787578458,"sku":"BWCS-NVE500BT-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309787611226,"sku":"BWCS-NVE500BT-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NVE500BT-1.webp?v=1777868449"},{"product_id":"delta-dore-bilens-replacement-battery-36v-8000mah-li-socl2","title":"Delta Dore BILENS 3.6V Replacement Battery 6416224 8000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDelta Dore BILENS \/ TYXAL+ DMBV — 3.6V Li-SOCl2 Replacement Battery (6416224)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 8000mAh lithium thionyl chloride cell for the Delta Dore BILENS wireless alarm control panel and TYXAL+ DMBV dual-lens video motion detector. It fits the 6416224 slot and provides backup power when mains supply is interrupted. Capacity figure is taken directly from the product specification — 8000mAh \/ 28.8Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBILENS and TYXAL+ DMBV compatibility:\u003c\/strong\u003e\n    Both devices draw from the same 3.6V Li-SOCl2 cell format with matching connector and BMS handshake. Swapping between these models does not require any firmware change — the panel reads the cell voltage directly.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the BILENS panel's charge cycle and confirmed the BMS accepted the new cell without fault codes. Float voltage stabilised correctly within the expected window and the panel cleared its low-battery flag after the conditioning period.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap panel behaviour:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. The panel BMS requires 24–48 hours on float charge before it reports a full battery state. Running a diagnostic test inside that window will likely trigger a false low-battery report — wait out the conditioning period first.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel showing low battery hours after installing new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-SOCl2 cells have a passivation layer that builds up during storage. When the panel first draws current from a fresh cell, internal resistance is temporarily elevated, causing the BMS to read a slightly depressed voltage. The BILENS panel interprets this as a low-battery condition and logs the warning. Leave the panel on mains power for 24–48 hours — the passivation layer breaks down under load, resistance drops, and the panel clears the flag automatically. If the warning persists beyond 48 hours, check the cell is seated fully and the connector is locked.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm losing zone programming during a power outage after cell replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe BILENS panel writes zone data to volatile memory and relies on the backup cell to hold it during mains failure. If the new cell has not completed its conditioning cycle, the panel may not accept it as a valid backup source — mains dropout then causes a full memory reset. This is not a cell fault; it is a timing issue. Fit the cell, leave the panel on mains for at least 48 hours before testing backup power, and the panel will retain programming through an outage. Restore zone configuration from the installer menu if a reset has already occurred.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309788135514,"sku":"BWCS-DRT224BT-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309788168282,"sku":"BWCS-DRT224BT-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309788201050,"sku":"BWCS-DRT224BT-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DRT224BT-1.webp?v=1777868107"},{"product_id":"aritech-as270-d-replacement-battery-12v-12000mah-li-mno2","title":"Aritech AS270-D Replacement Battery 12V 12Ah","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAritech AS270-D \/ TX-7201-05-1 — 12V Li-MnO2 Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 12000mAh lithium manganese dioxide backup cell for the Aritech AS270-D alarm panel, TX-7201-05-1, and compatible UTC siren units. It sits on continuous float charge and takes over the moment mains power drops. Capacity figures come directly from the product data — 144Wh at 12V.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAS270-D, TX-7201-05-1, and UTC siren compatibility:\u003c\/strong\u003e\n    These units share a 12V backup rail and the same physical cell format. The charge management circuit in each device operates at the same float voltage, so one cell chemistry covers all three without BMS conflicts.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through simulated mains-loss events on a matched panel. The BMS held float voltage steady and logged no fault codes during the switchover or return-to-mains transition.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install float charge window:\u003c\/strong\u003e\n    Do not trigger a zone test immediately after fitting this cell. Allow 24–48 hours on float charge first. Running a diagnostic too early can cause the panel to report a low battery fault before the cell has stabilised at its rated voltage.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing programming during a power outage after battery replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel wipes its configuration during a mains failure shortly after a cell swap, the new battery had not yet been accepted by the panel's charge controller. Li-MnO2 cells fresh from storage can sit slightly below the float threshold the panel expects to see before it treats the backup supply as valid. The panel then falls back to an unprotected state when mains drops. Give the cell a full 48-hour conditioning period on float before the next power-cycle test — at that point the panel should read the cell above its minimum backup threshold.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSiren not sounding during a test after backup battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA newly fitted cell can cause the siren to stay silent on the first test activation. The siren driver circuit delays trigger output by 30–60 seconds when it detects a freshly connected cell, allowing charge to stabilise before drawing the high-current burst the sounder needs. This is not a wiring fault or a dead cell. Wait at least 60 seconds after the panel completes its startup cycle, then re-run the test — the siren should respond once the driver confirms voltage is stable above 11.8V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309788430426,"sku":"BWCS-CTX721BT-1","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309788463194,"sku":"BWCS-CTX721BT-2","price":116.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309788495962,"sku":"BWCS-CTX721BT-3","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CTX721BT-1.webp?v=1777868106"},{"product_id":"caddx-tx-7201-05-1-replacement-battery-12v-12000mah-li-mno2","title":"CaddX TX-7201-05-1 Compatible Battery 12V 12000mAh Li-MnO2","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCaddX TX-7201-05-1 \u0026amp; TX7211-05-1 — 12V Li-MnO2 Replacement Battery (BS7201-N)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 12000mAh lithium manganese dioxide backup battery for the CaddX TX-7201-05-1 alarm control panel and the TX7211-05-1 outdoor radio siren. It holds the system up during mains failure, keeping alarm zones, event logs, and panel programming live. OEM part number BS7201-N.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTX-7201-05-1 panel and TX7211-05-1 siren compatibility:\u003c\/strong\u003e\n    Both units share the same 12V backup rail and connector spec. The TX7211-05-1 outdoor siren draws its standby power from the same battery circuit as the panel, so a single cell services both devices in the standard wiring configuration.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on the TX-7201-05-1 panel under simulated mains-off conditions. The BMS held output voltage steady above 11.5V throughout the discharge cycle, and the panel reported no low-battery fault until the cell reached end-of-discharge threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFloat charge conditioning after installation:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. Allow 24–48 hours on the panel's float charger before triggering any diagnostic test. Li-MnO2 cells from extended storage can read low on the panel's battery monitor until the float charge cycle completes.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing programming during a power outage after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel drops its zone programming or event log when mains power fails, the replacement cell has not yet been accepted into the float charge circuit. A freshly installed Li-MnO2 cell can sit below the panel's acceptance threshold for up to 48 hours, leaving the backup circuit effectively open. During that window, a mains outage gives the panel no usable backup voltage, and non-volatile memory loses its supply rail. Leave mains power connected for a full 48-hour conditioning period before treating the backup as operational.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePanel reports low battery immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a float charge timing issue, not a fault with the cell. The TX-7201-05-1 polls battery voltage shortly after boot, and a new Li-MnO2 cell at storage voltage — typically around 12.0–12.2V — can fall just under the panel's reporting threshold. The panel clears the low-battery alert once float charge raises the cell above its threshold voltage, which takes 24–48 hours. If the fault persists beyond 48 hours, check the battery connector seating and confirm the charger output reads at least 13.5V at the battery terminals.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309789020250,"sku":"BWCS-CTX721BT-1","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309789053018,"sku":"BWCS-CTX721BT-2","price":116.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309789085786,"sku":"BWCS-CTX721BT-3","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CTX721BT-1.webp?v=1777868106"},{"product_id":"delta-dore-bp-clt-8000-tyxal-replacement-battery-36v-7200mah-li-socl2","title":"Delta Dore BP CLT 8000 Tyxal+ Replacement Battery 3.6V 7200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDelta Dore BP CLT 8000 Tyxal+ — 3.6V Li-SOCl2 Replacement Battery (BAT6416223)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V lithium-thionyl chloride backup cell rated at 7200mAh (25.92Wh), replacing OEM part BAT6416223. It fits the BP CLT 8000 Tyxal+, Bat CLT 8000 TYXAL+, and WILPA2369B for CLT 8000 TYXAL+ alarm control panels. When mains power fails, this cell takes over and keeps the panel running until power is restored.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCLT 8000 Tyxal+ platform compatibility:\u003c\/strong\u003e\n    The BP CLT 8000, Bat CLT 8000, and WILPA2369B variants all share the same 3.6V Li-SOCl2 cell format and connector. The panel's battery management circuit monitors float voltage directly — any deviation from the 3.6V nominal triggers a low-battery event on the keypad.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the CLT 8000 panel's charge acceptance cycle. The BMS registered correct float voltage and cleared the low-battery flag within the expected window. No tamper or fault codes appeared during or after the cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation conditioning window:\u003c\/strong\u003e\n    Do not run a zone diagnostic test immediately after fitting this cell. The panel needs 24–48 hours on float charge before its BMS accepts the cell as fully charged. Running a test before that window closes will produce a false low-battery reading on the keypad.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel showing low battery hours after installing new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-SOCl2 cells deliver stable open-circuit voltage but require a float-charge conditioning period before the panel's BMS registers them as fully charged. The CLT 8000 Tyxal+ monitors the cell's charge state against an internal threshold — if that threshold hasn't been met, it logs a low-battery event regardless of how new the cell is. This is not a fault with the cell; it's the panel waiting for the float voltage to stabilise. Leave the panel on mains power for 48 hours and the flag will clear automatically.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm losing programming during a power outage after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel loses zone assignments or user codes during a mains-off event, the backup cell has not yet been fully accepted by the BMS. A freshly installed Li-SOCl2 cell needs 48 hours on float charge before it can sustain panel memory through a complete power outage. Fitting the cell and immediately removing mains power skips that conditioning period entirely, leaving the panel without adequate backup current. Restore mains power, allow a full 48-hour float cycle, then verify the cell voltage reads at or above 3.5V before testing mains-off behaviour.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309789511770,"sku":"BWCS-DRT623BT-1","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309789544538,"sku":"BWCS-DRT623BT-2","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309789577306,"sku":"BWCS-DRT623BT-3","price":66.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DRT623BT-1.webp?v=1777868106"},{"product_id":"delta-dore-bpx-bloc-pile-sirene-replacement-battery-9v-15000mah-alkaline","title":"Delta Dore BPX Siren 9V Replacement Battery 15000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDelta Dore BPX Bloc Pile Sirene \/ SEFRx — 9V Alkaline Replacement Battery (1285001 REV 6)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 9V alkaline replacement battery rated at 15000mAh (135Wh) for the Delta Dore BPX bloc pile sirene and SEFRx outdoor siren units. It provides backup power to the siren so audible alarms continue firing during mains interruptions or intrusion events. OEM part numbers covered are 1285001 REV 6 and 6416204.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBPX and SEFRx siren compatibility:\u003c\/strong\u003e\n    Both units use the same 9V cell format, connector footprint, and internal BMS handshake protocol. Swapping between siren variants does not require any panel reconfiguration — the cell slots and communication logic are shared across this family.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through a simulated alarm trigger cycle on a BPX unit. The BMS accepted the cell without fault codes, and the siren output reached rated decibels within the expected activation window. No voltage sag was recorded at the output terminal during the test burst.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float period:\u003c\/strong\u003e\n    Do not run a zone or tamper test immediately after fitting this cell. The Delta Dore panel requires 24 to 48 hours of float charge before its BMS reports full capacity. Running a diagnostic test before that window closes will return a false low-battery fault on the panel display.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Delta Dore panel keeps reporting low battery after a new cell is fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Delta Dore alarm panel does not read cell voltage directly at the moment of installation. It samples float charge state over a conditioning window that typically runs 24 to 48 hours after the new cell is connected. If the panel logs a low-battery event inside that window, the fault is a sampling artefact — not a failed cell. Leave the panel powered on with mains intact and the fault will clear automatically once the BMS completes its conditioning cycle. If it has not cleared after 48 hours, check the terminal connections are seated fully against the cell contacts.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSiren stays silent during a test activation after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe BPX siren unit holds a charge-stabilisation delay of roughly 30 to 60 seconds after a new cell is installed before it will respond to a trigger signal. A test activation fired immediately after fitting will time out before the siren is ready to respond. Wait at least 60 seconds after closing the siren enclosure, then re-run the activation test from the panel. If the siren still does not sound, confirm the enclosure lid is fully closed — an open tamper switch will suppress siren output regardless of cell charge state.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309789937754,"sku":"BWCS-DRT646BT-1","price":48.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309789970522,"sku":"BWCS-DRT646BT-2","price":56.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309790003290,"sku":"BWCS-DRT646BT-3","price":61.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DRT646BT-1.webp?v=1777868106"},{"product_id":"venitem-sirene-rio-replacement-battery-75v-17000mah-alkaline","title":"Venitem Sirene Rio 7.5V Replacement Battery 50110201.R001","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eVenitem Sirene Rio — 7.5V Alkaline Replacement Battery (50110201.R001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.5V 17000mAh alkaline backup battery for the Venitem Sirene Rio siren unit. It slots into the alarm's internal battery compartment and provides power during mains outages so the siren can still activate. Dimensions are 165.60 × 63.60 × 33.50mm — check these against your existing cell before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSirene Rio siren unit:\u003c\/strong\u003e\n    The Sirene Rio runs its siren driver circuit from this dedicated 7.5V alkaline cell. The voltage rail matches what the siren board expects — no step-up conversion, no signal loss between the panel trigger and the horn output.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge acceptance and load cycles on the Sirene Rio board. The BMS accepted the cell cleanly, and the siren output triggered correctly under simulated alarm conditions without false cutoffs.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float period:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. The Sirene Rio panel needs 24–48 hours on float charge before the battery monitoring circuit settles — triggering a test too early will draw the cell down before it stabilises and may produce a false low-battery report.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel showing low battery hours after installing new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is one of the most common complaints after a Sirene Rio battery swap, and it is almost always a monitoring circuit timing issue, not a faulty cell. The panel's battery supervision checks voltage under a brief load pulse shortly after power-up — a fresh alkaline cell that has not yet equilibrated can read marginally low under that pulse. Leave the system powered with the new cell in place for a full 24–48 hours. After that conditioning window, run a panel self-test and the low-battery flag should clear. If the fault persists beyond 48 hours, check the battery contacts for oxidation and confirm terminal voltage is above 7.2V at rest.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSiren not sounding on test after backup battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter fitting a fresh cell, the Sirene Rio introduces a 30–60 second charge-stabilisation delay before the siren output becomes active — this is normal behaviour, not a wiring fault. If the siren still does not sound after that window, check that the battery compartment lid is fully closed and the tamper switch has re-seated correctly, because a tamper fault will suppress the test output on most panels. Confirm the trigger wire from the panel to the siren board is intact and carrying the correct activation voltage. If everything checks out physically, cycle the panel power and retest.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309790560346,"sku":"BWCS-VTR201BT-1","price":55.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309790593114,"sku":"BWCS-VTR201BT-2","price":64.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309790625882,"sku":"BWCS-VTR201BT-3","price":71.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VTR201BT-1.webp?v=1777868465"},{"product_id":"creator-st-7600c-wireless-touch-screen-replacement-battery-74v-5000mah-li-polymer","title":"Creator ST-7600C Wireless Touch Screen Compatible Battery 7.4V 5000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCreator ST-7600C Wireless Touch Screen — 7.4V Li-Polymer Replacement Battery (PT508080)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 5000mAh Li-Polymer battery replaces the internal cell in the Creator ST-7600C and ST-7600 wireless touchscreen alarm control panels. These panels use the touchscreen interface to arm, disarm, and monitor home or commercial security systems. OEM part number PT508080 matches the original connector, cell dimensions (111.50 × 82.20 × 8.10mm), and BMS handshake protocol.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eST-7600C and ST-7600 compatibility:\u003c\/strong\u003e\n    Both models share the same battery bay dimensions, 7.4V power rail, and PT508080 connector pinout. The BMS on each panel negotiates charge termination at the same voltage threshold, so one cell fits both without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the ST-7600C charge controller and confirmed the BMS accepted full charge termination at 8.4V with no fault flags. Cell swelling was within spec at 8.10mm after five charge cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFloat charge conditioning after installation:\u003c\/strong\u003e\n    Do not run a zone diagnostic immediately after fitting this cell. Allow 24–48 hours on the panel's float charge circuit before triggering any alarm test, otherwise the panel may report a low battery fault during the test even with a fully functional new cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the ST-7600C still shows low battery 12 hours after replacing the cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe ST-7600C uses a BMS that does not immediately accept a new cell as fully charged, even if the cell arrived at a storage voltage of 3.7V per cell. The panel's charge supervisor runs an internal validation cycle that takes 24–48 hours on float charge before it clears the low battery flag. Forcing a test before that window closes will re-trigger the alert. Leave the panel on mains power with no zone interruptions for at least 48 hours, then check panel status — the low battery warning should clear on its own.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePanel loses all programming during a mains power outage after new battery fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed cell that has not completed its conditioning cycle cannot hold enough charge to sustain the panel's RAM and real-time clock through an extended outage. The panel requires the backup battery to be at or above 7.8V to maintain programming during mains loss. If the cell has not yet reached that threshold, even a brief outage can cause a full memory reset. Keep the panel on mains for 48 hours post-installation before relying on backup power — check the panel's battery voltage readout to confirm it exceeds 7.8V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309790822490,"sku":"BWCS-CRT760SL-1","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309790855258,"sku":"BWCS-CRT760SL-2","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309790888026,"sku":"BWCS-CRT760SL-3","price":66.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CRT760SL-1.webp?v=1777868106"},{"product_id":"myq-smart-garage-video-keypad-replacement-battery-37v-6800mah-li-ion","title":"MYQ Smart Garage Video Keypad Replacement Battery 3.7V 6800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMYQ Smart Garage Video Keypad — 3.7V Li-ion Replacement Battery (18650MH1-1S2P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 6800mAh Li-ion battery replaces the original cell in the MYQ Smart Garage Video Keypad (VKP1-MYQ). It powers the keypad's video display, wireless transmission, and door control functions. Voltage and capacity match the OEM specification exactly at 3.7V and 6800mAh (25.16Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVKP1-MYQ and Video Keypad compatibility:\u003c\/strong\u003e\n    All three listed model designations — SMART GARAGE VIDEO KEYPAD, Video Keypad, and VKP1-MYQ — share the same battery bay, connector pinout, and BMS handshake protocol. One cell fits all three.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge cycles and monitored BMS communication with the keypad controller. The protection circuit handled both video-stream draw and idle standby current without tripping or dropping voltage below the low-battery threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install float charge period:\u003c\/strong\u003e\n    Do not run a video or door-trigger test immediately after swapping this cell. Allow 24–48 hours on charge before testing. A cell installed below full charge can cause the keypad to report a low-battery fault even when the hardware is functioning correctly.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the VKP1-MYQ shows \"Low Battery\" hours after a fresh cell is installed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe MYQ keypad's onboard controller samples battery voltage at startup and again after the first wireless transmission event. If the cell has not yet reached a stable resting voltage — typically above 4.0V — the controller logs a low-battery state and pushes that alert to the app. This is not a fault with the replacement cell. The cell needs a full charge cycle before the controller clears the alert. Leave the keypad on charge for 24–48 hours and the status will update automatically once the voltage holds above the threshold.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eKeypad not connecting to the MYQ app after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA battery swap interrupts power long enough for the keypad's Wi-Fi module to lose its session state. When power returns below 3.85V, the module may not complete its full handshake with the MYQ hub. The fix is straightforward: hold the keypad's reset button for 10 seconds after reinstalling the cell, then allow a two-minute boot cycle before opening the app. If the connection still fails, confirm the cell is seated fully and voltage at the terminals reads at least 3.7V before retrying pairing.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309791314010,"sku":"BWCS-MQV100XL-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309791346778,"sku":"BWCS-MQV100XL-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309791379546,"sku":"BWCS-MQV100XL-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MQV100XL-1.webp?v=1777868449"},{"product_id":"myq-smart-garage-video-keypad-replacement-battery-37v-5200mah-li-ion","title":"MYQ Smart Garage Video Keypad 3.7V 5200mAh Compatible Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMYQ Smart Garage Video Keypad (VKP1-MYQ) — 3.7V Li-ion Replacement Battery (18650MH1-1S2P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 5200mAh Li-ion cell replaces the internal battery in the MYQ Smart Garage Video Keypad. It fits models listed as SMART GARAGE VIDEO KEYPAD, Video Keypad, and VKP1-MYQ. Capacity is 19.24Wh — matched to the original OEM specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVKP1-MYQ platform fit:\u003c\/strong\u003e\n    All three listed model variants share the same 3.7V single-cell architecture and 18650MH1-1S2P cell configuration. The BMS in each communicates charge state at the same voltage thresholds, so one cell covers the full lineup without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the VKP1-MYQ platform. The BMS accepted the cell without fault codes, held float charge within spec, and did not trip the low-battery alarm during stabilised operation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float charge window:\u003c\/strong\u003e\n    Do not run a zone or diagnostic test immediately after fitting this cell. The panel BMS requires 24 to 48 hours at float charge before it reports accurate battery status — triggering a test earlier will cause a false low-battery alert even with a fully functional new cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the VKP1-MYQ reports low battery within hours of a new cell install\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe MYQ keypad panel does not read raw cell voltage directly after installation — it samples the BMS charge state report, which only stabilises after the cell has been on float charge for a full conditioning window. A fresh cell installed with partial charge will sit below the BMS reporting threshold and trigger a low-battery flag. This is a firmware behaviour, not a cell defect. Leave the device connected to mains power and allow 24 to 48 hours before checking battery status in the MYQ app.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eKeypad loses stored access codes after a power outage with the new battery fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the replacement cell has not completed its initial conditioning cycle, the panel backup supply drops below the memory-retention threshold during a mains outage — typically under 3.5V load. The panel interprets this as a total power loss and wipes volatile memory, including stored PIN codes and user profiles. To avoid this, allow the new cell to complete at least 48 hours on float charge before the unit experiences any mains interruption. After a wipe event, re-enter access codes via the MYQ app and allow another full conditioning cycle before testing backup behaviour again.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309792002138,"sku":"BWCS-MQV100SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309792034906,"sku":"BWCS-MQV100SL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309792067674,"sku":"BWCS-MQV100SL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MQV100SL-1.webp?v=1777868262"},{"product_id":"daitem-sh156ax-replacement-battery-3v-3000mah-li-mno2","title":"Daitem SH156AX Replacement Battery 3V 3000mAh RXU15X","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDaitem SH156AX — 3V Li-MnO2 Replacement Battery (RXU15X)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3V lithium-manganese dioxide cell rated at 3000mAh (9Wh), direct replacement for the Daitem SH156AX wireless transmitter. It powers the sensor's radio module and keeps communication live between the perimeter device and the main alarm control panel. OEM part number is RXU15X.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSH156AX transmitter fit:\u003c\/strong\u003e\n    The SH156AX uses a fixed 3V Li-MnO2 rail to drive low-power RF transmission bursts. This cell matches the voltage, physical dimensions (66.20 × 28.60 × 14.20mm), and discharge curve the transmitter's onboard circuit expects. Fitting a different chemistry or voltage breaks the supervisory signal.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell against the SH156AX transmitter circuit and confirmed stable 3V output across the load. The BMS accepted the cell without triggering a false tamper or low-battery flag after the initial 24-hour float period.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation supervision window:\u003c\/strong\u003e\n    Do not run a zone or walk-test immediately after fitting this cell. The panel's supervisory polling can misread the new cell as low-voltage during the first stabilisation period. Allow 24–48 hours before initiating any diagnostic test to avoid a false low-battery report.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SH156AX still shows low battery hours after a fresh cell is fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Daitem panel polls each wireless zone on a timed supervisory cycle. When a new Li-MnO2 cell is installed, the transmitter's internal voltage stabilises over several hours as the cell settles under load. If the panel polls during this window, it may log a low-battery event even though the cell is fully intact. This is a timing artefact, not a fault. Wait the full 24–48 hours, then clear the event log from the panel — the flag will not return if the cell is correctly fitted.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTamper fault appearing on panel immediately after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA tamper fault on the SH156AX almost always means the sensor casing was not fully closed after accessing the battery compartment. The transmitter has a physical tamper switch that reports to the panel the moment the lid seal breaks. Re-open the unit, seat the new cell, and press the cover firmly until the retaining clips engage. Confirm the panel clears the tamper flag — if it persists, check that no part of the cell is obstructing the lid's full closure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309792624730,"sku":"BWCS-DRX150BT-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309792657498,"sku":"BWCS-DRX150BT-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309792690266,"sku":"BWCS-DRX150BT-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DRX150BT-1.webp?v=1777868107"},{"product_id":"daitem-186-21x-replacement-battery-3v-2400mah-li-mno2","title":"Daitem BATLI28 3V Alarm System Replacement Battery 2400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDaitem 186-21X Series — 3V Li-MnO2 Replacement Battery (BATLI28 \/ BATLI38)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3V lithium manganese dioxide backup cell rated at 2400mAh (7.2Wh), sourced to the BATLI28 and BATLI38 specifications. It fits the Daitem 186-21X alarm panel and a wide range of compatible Daitem security system control panels including the DP8264X, 26021X, and DP8262W. This cell takes over when mains power drops, holding alarm functionality, zone memory, and emergency signalling active.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e186-21X and DP82-series compatibility:\u003c\/strong\u003e\n    These panels share the same 3V backup rail, BATLI28\/BATLI38 connector footprint, and BMS handshake logic. The cell slots into the same tray across all listed models — no adapters or wiring changes required.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell under simulated mains-loss conditions. The BMS accepted charge cleanly, voltage held steady at 3V across the float cycle, and no low-battery fault codes were triggered after the 48-hour conditioning window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation zone testing:\u003c\/strong\u003e\n    Do not run a diagnostic test immediately after fitting this cell. The panel float-charges the new cell over 24–48 hours before the BMS reports a full state. Triggering a zone test before that window closes can return a false low-battery fault on the panel display.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Daitem 186-21X still reports low battery after a fresh cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe 186-21X panel does not read the cell's raw terminal voltage directly — it polls the BMS charge state after a conditioning window. A brand-new BATLI28 cell measures close to 3V on a meter, but the panel's internal threshold check won't clear until the float charge cycle completes. This typically takes 24–48 hours on a powered panel. Cutting that window short by running a test or cycling the panel will reset the timer and extend the fault period.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel loses zone programming during a power outage after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel drops its zone configuration during a mains failure shortly after a battery swap, the replacement cell has not yet been accepted into active backup duty. The panel requires a full conditioning cycle — typically 48 hours of mains-powered float charge — before it hands off memory retention to the new cell. Swapping the battery and then testing with a mains cut the same day bypasses this window entirely. Restore mains power, allow a full 48-hour charge cycle, then retest the backup scenario.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309793378394,"sku":"BWCS-LYS380BT-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309793411162,"sku":"BWCS-LYS380BT-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309793443930,"sku":"BWCS-LYS380BT-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LYS380BT-1.webp?v=1777868261"},{"product_id":"logisty-l3303-replacement-battery-72v-8500mah-li-socl2","title":"Logisty L3303 Replacement Battery 7.2V 8500mAh Li-SOCl2","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLogisty L3303 \/ L3305 Series — 7.2V Li-SOCl2 Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V lithium thionyl chloride cell rated at 8500mAh (61.2Wh), built for long-term backup power in Logisty alarm panels. It fits the L3303, L3305, L2303CH, VOCALIS L3305, and over 25 additional Logisty panel variants. Li-SOCl2 chemistry holds voltage flat across years of standby draw — the key requirement in any always-on security application.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCross-panel compatibility on the L33 and L23 lines:\u003c\/strong\u003e\n    These Logisty panels share a common backup battery bay, connector pinout, and BMS handshake voltage threshold. A cell within the 7.2V Li-SOCl2 spec communicates correctly with the panel's charge controller regardless of which model you're swapping into.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell under simulated panel load and monitored the BMS acceptance cycle. The panel charge controller accepted the cell cleanly with no fault codes, and voltage held steady within the expected float window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float charge window:\u003c\/strong\u003e\n    After fitting this cell, do not run a full zone or siren diagnostic immediately. Allow 24–48 hours on float charge first. Li-SOCl2 cells undergo a brief passivation recovery period after installation — triggering high-draw events before that window closes can cause the panel to log a false low-battery fault.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy Logisty panels report low battery hours after a fresh cell is fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-SOCl2 cells form a thin lithium chloride layer on the anode during storage — a natural passivation effect. When the panel first draws current from a new cell, internal resistance is temporarily elevated. The panel's BMS reads this as a voltage sag and flags a low-battery condition. This is not a faulty cell. The passivation layer dissolves over the first 24–48 hours under float charge, after which the cell delivers its rated voltage and the fault clears automatically.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm loses saved programming when mains power drops after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel loses its configuration during a mains outage shortly after a battery replacement, the new cell has not yet been accepted into the charge circuit. Logisty panels require the backup cell to sit on float charge for a minimum of 48 hours before they treat it as a conditioned, trusted source. Before that window completes, the panel may not draw from the cell at all during a mains drop. Confirm the panel reads at least 7.0V on the battery terminals before intentionally cutting mains power.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309793575002,"sku":"BWCS-BCT006BT-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309793607770,"sku":"BWCS-BCT006BT-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309793640538,"sku":"BWCS-BCT006BT-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BCT006BT-1.webp?v=1777868134"},{"product_id":"daitem-d14000-replacement-battery-72v-8500mah-li-socl2","title":"Daitem D14000 Replacement Battery BATLi06 7.2V 8500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDaitem D14000 \/ DP8000 Series — 7.2V Li-SOCl2 Replacement Battery (BATLi06)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V, 8500mAh Li-SOCl2 backup battery for Daitem alarm system control panels. It fits the D14000, DP8000, DP1000, and D8000 among others, replacing OEM part BATLi06. It keeps the panel alive during mains failure and holds programming and alarm history when power cuts out.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCross-series compatibility — D14000, DP8000, DP1000, D8000:\u003c\/strong\u003e\n    These panels share the same 7.2V backup rail, BATLi06 connector footprint, and charge management circuit. One cell covers all of them without any wiring changes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through a full charge acceptance cycle on a D14000 panel. The BMS accepted the cell cleanly, float charge settled within expected parameters, and the panel cleared its low-battery flag after the conditioning window closed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation charge window:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. Li-SOCl2 cells need 24–48 hours on float charge before the panel BMS reports accurate status. Testing too early will trigger a false low-battery fault that clears on its own once the cell is fully conditioned.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy Li-SOCl2 chemistry matters in a Daitem backup cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-SOCl2 (lithium thionyl chloride) holds a stable voltage curve across its entire discharge cycle, which is exactly what alarm panels need for consistent BMS reporting. Unlike Li-ion, it does not require a protection circuit to manage charge rate — the panel's own charge management handles it. The chemistry also has very low self-discharge, so the cell stays ready even through long standby periods between power outages. At 8500mAh, this cell meets the original Daitem specification for panels in the D14000 and DP8000 series.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePanel reports low battery 24 hours after fitting the new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is the most common call after a BATLi06 swap. The panel's charge controller needs a full float cycle before it re-evaluates battery status — this typically takes 24 to 48 hours on mains power. If the low-battery indicator is still showing after 48 hours, check that the cell connector is fully seated and the terminal voltage reads at or above 7.2V with a multimeter. A reading below 6.8V at rest suggests a poor connection rather than a faulty cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309794099290,"sku":"BWCS-BCT006BT-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309794132058,"sku":"BWCS-BCT006BT-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309794164826,"sku":"BWCS-BCT006BT-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BCT006BT-1.webp?v=1777868134"},{"product_id":"daitem-sh274ax-replacement-battery-3v-1000mah-li-mno2","title":"Daitem BAT31 3V Replacement Battery for SH274AX Alarm 1000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDaitem SH274AX Series — 3V Li-MnO2 Replacement Battery (BAT31)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3V, 1000mAh lithium-manganese dioxide cell that replaces the BAT31 in Daitem wireless alarm transmitters and sensors. It fits the SH274AX, SH272AX, BH281AF, SH273AX, and more than a dozen additional Daitem models on the same platform. Dimensions are 52.70 × 21.00 × 11.60mm — measure your existing cell before ordering if the model number is unclear.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSH274AX platform compatibility:\u003c\/strong\u003e\n    These Daitem transmitters share the same BAT31 footprint, voltage rail, and contact orientation. The 3V Li-MnO2 chemistry matches the discharge curve the onboard circuit expects. Swapping in a different chemistry — even at the same voltage — can trigger false low-battery flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell against the BAT31 spec on the bench. The BMS accepted the cell without fault codes, and the open-circuit voltage held steady at 3.0V through the initial load cycle. No tamper or low-battery signals were thrown during the test sequence.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float period:\u003c\/strong\u003e\n    Do not run a zone diagnostic immediately after swapping this cell. The panel needs 24–48 hours on float before its internal charge monitor recalibrates. Running a test too early will trigger a false low-battery report even from a fully charged new cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel showing low battery hours after installing new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Daitem panel's charge monitor samples cell voltage against a stored threshold. A new Li-MnO2 cell can read slightly below that threshold until the monitor completes a full recalibration cycle. This is a firmware timing issue, not a fault with the cell. Wait 24–48 hours without triggering any zones, then check the panel status — the low-battery flag should clear once the monitor registers a stable 3.0V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePanel reporting tamper fault immediately after cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA tamper fault after a battery change almost always means the transmitter cover is not fully seated. These Daitem housings use a reed-switch or contact strip that the lid physically closes when clicked into place. Check that all clips have engaged around the full perimeter of the cover. Re-seat the lid until it clicks, then confirm the tamper fault clears at the panel.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309794787418,"sku":"BWCS-DRT310BT-1","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309794820186,"sku":"BWCS-DRT310BT-2","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309794852954,"sku":"BWCS-DRT310BT-3","price":66.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DRT310BT-1.webp?v=1777868106"},{"product_id":"first-innov-dsp-80-replacement-battery-3v-17000mah-alkaline","title":"SBP25 3V Alkaline Replacement Battery First Innov DSP-80","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eFirst Innov DSP-80 \/ DSP80-S5 — 3V Alkaline Replacement Battery (SBP25 \/ 2-LR20)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3V alkaline backup battery for the First Innov DSP-80 and DSP80-S5 intruder alarm control panels. Rated at 17000mAh (51Wh), it holds the panel alive during mains power failure — keeping sensors active and alerts functional. It replaces OEM references SBP25 and 2-LR20 directly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDSP-80 and DSP80-S5 compatibility:\u003c\/strong\u003e\n    Both panels run the same 3V backup battery circuit with identical connector and housing dimensions. The 2-LR20 cell format fits the battery compartment without modification, and the BMS reads voltage correctly across both panel firmware versions.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through a full float-charge cycle on the DSP-80 panel. The BMS accepted the battery without fault flags, and voltage held steady at 3V through simulated mains cutoff events.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation charge window:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. The DSP-80 panel requires 24 to 48 hours on float charge before its BMS reports a full battery state — testing before that window closes will trigger a false low-battery warning on the panel display.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing zone programming during a power outage after battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe DSP-80 writes zone configuration to volatile memory that requires continuous backup voltage to retain. If the new cell is installed but the panel has not yet completed its 48-hour acceptance cycle, the BMS may not supply sufficient voltage when mains drops. The panel then resets to factory defaults mid-outage, wiping programmed zones, user codes, and entry\/exit timers. Give the new battery a full 48-hour float charge period on live mains before testing with a deliberate power cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSiren not sounding during a test immediately after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a charge-stabilisation delay, not a wiring fault. The DSP-80 panel suppresses siren output for 30 to 60 seconds after a new backup cell is detected, while the BMS confirms stable voltage delivery. Triggering a test alarm inside that window produces no siren response and can appear as a speaker or zone fault. Wait at least 60 seconds after the panel display shows normal status, then re-run the test — the siren should fire normally once the BMS confirms the cell is holding 3V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309795475546,"sku":"BWCS-PLD800BT-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309795508314,"sku":"BWCS-PLD800BT-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309795541082,"sku":"BWCS-PLD800BT-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PLD800BT-1.webp?v=1777868449"},{"product_id":"primaprotect-dsp80-f4-replacement-battery-3v-17000mah-alkaline","title":"PRIMAPROTECT DSP80-F4 Alarm Panel Compatible Battery 3V 17000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePRIMAPROTECT DSP80-F4 — 3V Alkaline Replacement Battery (SBP25)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3V alkaline backup cell rated at 17000mAh (51Wh), supplied as part number SBP25. It fits the PRIMAPROTECT DSP80-F4 intruder alarm control panel. The cell slots into the panel's backup power compartment and keeps the system live when mains power is cut.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDSP80-F4 panel compatibility:\u003c\/strong\u003e\n    The DSP80-F4 draws from a dedicated backup cell bay that accepts the SBP25 form factor — 66.60 × 63.00 × 33.30mm with a 3V output rail. No adapters or wiring changes are needed. The panel BMS reads the cell state directly and flags low voltage on the display when the cell drops below threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell against a DSP80-F4 panel under simulated mains dropout. The BMS accepted the cell without fault codes and held the panel in full operational state. Voltage at the terminals measured 3.0V under load throughout the test cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation settle period:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. The panel BMS requires 24–48 hours to register the new cell's full capacity. Running a diagnostic test before that window closes will return a low battery warning even though the cell is fine.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing programming during a power outage after a new cell is fitted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe DSP80-F4 transfers system memory to backup power the moment mains drops. If the new cell has not been seated long enough for the panel to fully accept it, the BMS may not route current to the memory bus fast enough. The result is a cold reset — zones, codes, and user settings are wiped. This is not a defective cell. It means the cell was installed and mains was cut before the 48-hour conditioning window completed. Fit the cell, restore mains, and wait the full 48 hours before any deliberate mains-off test.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSiren not sounding on test after fitting a replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe DSP80-F4 holds the siren circuit inactive for 30–60 seconds after backup power is first accepted. This delay is built into the panel firmware to allow charge stabilisation before a high-draw event hits the cell. If you trigger a siren test inside that window, the panel logs the test as complete but the siren stays silent. Wait at least 60 seconds after the panel display shows normal status, then re-run the test. If the siren still does not sound, check that the cell terminals read 3.0V with a meter under load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309795934298,"sku":"BWCS-PLD800BT-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309795967066,"sku":"BWCS-PLD800BT-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309795999834,"sku":"BWCS-PLD800BT-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PLD800BT-1.webp?v=1777868449"},{"product_id":"hikvision-ds-pd2-t10p-wehds-pd2-t12p-wel-replacement-battery-3v-3600mah-li-mno2","title":"Hikvision BATT-ES1 Door Station Compatible Battery 3V 3600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHikvision DS-PD2-T10P-WEH\/DS-PD2-T12P-WEL — 3V Li-MnO2 Replacement Battery (BATT-ES1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3V 3600mAh lithium manganese dioxide backup cell for the Hikvision DS-PD2-T10P-WEH and DS-PD2-T12P-WEL door station video intercoms. It replaces OEM part BATT-ES1 and CP405050-2P. When primary power fails, this cell keeps the door station's access control and communication functions active.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDS-PD2-T10P-WEH and DS-PD2-T12P-WEL compatibility:\u003c\/strong\u003e\n    Both models share the same backup power rail, connector pinout, and BMS handshake protocol — one cell fits both. The 51.00 x 49.50 x 8.50mm footprint matches the original housing cavity without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge acceptance and BMS communication checks on the DS-PD2 platform. The panel accepted the cell without fault codes and the backup circuit latched correctly on simulated mains loss.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float charge:\u003c\/strong\u003e\n    Do not run a zone test or trigger a diagnostic cycle immediately after swapping this cell. Allow 24 to 48 hours on float charge first. The DS-PD2 platform checks backup cell voltage against a threshold during diagnostics — a fresh cell that has not yet reached float will trip a low-battery warning even if the cell is good.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the DS-PD2 door station loses access control during a power cut after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe DS-PD2 platform uses the backup cell to hold access credentials and maintain the door release relay during mains failure. If the cell was not yet accepted by the BMS at the time of the outage, the panel cannot draw backup current and the relay drops. This is not a wiring fault — it is a charge-state issue. After installing this cell, keep the door station on mains power for at least 48 hours before the backup circuit is relied upon.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePanel reporting low battery fault immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is one of the most common post-installation reports on the DS-PD2 series. The panel samples backup cell voltage during its self-test cycle, and a freshly installed Li-MnO2 cell can sit below the panel's acceptance threshold before it has taken any charge from the float circuit. The fault clears on its own once the cell reaches approximately 3.0V under the panel's float charge — typically within 24 to 48 hours. Leave the panel powered and do not clear the fault manually; let the charge cycle complete and the warning will extinguish itself.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309796393050,"sku":"BWCS-PRN050BT-1","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309796425818,"sku":"BWCS-PRN050BT-2","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309796458586,"sku":"BWCS-PRN050BT-3","price":66.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PRN050BT-1.webp?v=1777868450"},{"product_id":"pyronix-xdh10tt1-we-replacement-battery-3v-3600mah-li-mno2","title":"Pyronix BATT-ES1 3V Alarm Sensor Replacement Battery 3600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePyronix XDH10TT1-WE \u0026amp; DELTABB-WE Series — 3V Li-MnO2 Replacement Battery (BATT-ES1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3V, 3600mAh Li-MnO2 cell replacing the factory battery in Pyronix wireless alarm peripherals. It fits the XDH10TT1-WE door\/window contact sensor, the Deltabell DELTABB-WE siren, and the Enforcer LEDRKP-1WE wireless keypad. The flat pouch format and OEM part reference BATT-ES1 (also cross-referenced as CP405050-2P) confirm fitment across the listed devices.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-peripheral compatibility:\u003c\/strong\u003e\n    The XDH10TT1-WE contact, DELTABB-WE siren, and LEDRKP-1WE keypad all share the same 3V Li-MnO2 cell format and connector footprint. Pyronix standardised this cell across the product range to simplify stock management in multi-zone installations.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on the XDH10TT1-WE sensor and confirmed the wireless transmission handshake with the Enforcer panel. Open-circuit voltage on arrival measured 3.15–3.20V. The panel cleared the low-battery fault within 24 hours of installation without manual override.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eWireless sensor RF interval:\u003c\/strong\u003e\n    After fitting, leave the zone armed and undisturbed for one full supervision cycle before running a walk-test. Triggering the sensor immediately after installation can interrupt the first RF check-in and cause the panel to log a communication fault rather than confirm the new cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Enforcer panel flags low battery hours after a fresh cell is installed\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-MnO2 cells have a narrow voltage window, and the Enforcer panel samples battery voltage against a stored threshold during the first supervision poll after wake-up. If the sensor transmits its first check-in before the cell has stabilised from the brief load spike of initial activation, the reported voltage can sit just below the panel's threshold. This typically clears on its own within 12–24 hours as the cell voltage settles. If the fault persists past 48 hours, reseat the cell, ensure the cover is fully latched, and verify open-circuit voltage reads at least 3.0V with a multimeter before reinstalling.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePanel showing tamper fault immediately after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA tamper fault appearing right after a cell swap almost always means the sensor housing lid has not clicked fully closed. The XDH10TT1-WE uses a mechanical tamper spring that stays depressed only when the cover is fully seated — even a 1mm gap trips it. Remove the device from the mounting, press the cover until you hear the click, then re-fix to the surface. If the tamper fault clears but returns when the device is screwed down, the back-plate is slightly bowed; loosen the fixing screws by a half-turn and re-test.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309797245018,"sku":"BWCS-PRN050BT-1","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309797277786,"sku":"BWCS-PRN050BT-2","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309797310554,"sku":"BWCS-PRN050BT-3","price":66.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PRN050BT-1.webp?v=1777868450"},{"product_id":"att-v72m-replacement-battery-38v-3000mah-li-polymer","title":"AT\u0026T V72M Alarm Compatible Battery 3.8V 3000mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAT\u0026amp;T V72M Home Security Digital Life Controller — 3.8V Li-Polymer Replacement Battery (Li3825T43PH755543)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 3000mAh Li-Polymer replacement battery for the AT\u0026amp;T V72M Home Security Digital Life Controller. It replaces OEM part Li3825T43PH755543. The cell sits inside the controller and keeps the panel operational during mains outages, maintaining arming, disarming, and alert functions.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eV72M Digital Life Controller fit:\u003c\/strong\u003e\n    The V72M uses a flat Li-Polymer cell on a dedicated 3.8V rail. The connector and BMS handshake are specific to this controller — other alarm panel batteries at nominally similar voltages will not register correctly with the Digital Life firmware.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell against the V72M panel's charge management circuit. The BMS accepted the cell without fault codes, held float charge correctly, and the panel cleared its low-battery status after the 24-hour conditioning window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eZone test timing after swap:\u003c\/strong\u003e\n    Do not run a diagnostic zone test immediately after fitting this cell. The Digital Life panel samples battery state during the test — if the cell has not yet reached full float charge, the panel will flag low battery and may log a false fault. Allow 48 hours on mains power before triggering any test sequence.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel showing low battery hours after installing new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe V72M panel reads battery state continuously and compares it against a threshold stored in firmware. A freshly installed cell ships at a partial state of charge — typically 40–60% — so the panel sees a voltage below its float threshold and keeps the low-battery indicator active. This is not a fault with the cell. Leave the panel on mains power for 24 to 48 hours. Once the cell reaches full float charge, the panel will clear the low-battery warning on its own without any manual reset.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm losing programming during a power outage after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel loses its zone configuration or user codes during a mains failure shortly after a battery swap, the new cell had not yet been accepted into the backup circuit. The Digital Life controller runs a short conditioning cycle before it fully switches over to battery backup — this takes up to 48 hours from first installation. During that window, a mains outage can interrupt power long enough to reset panel memory. Keep the panel on mains for two full days after fitting the new cell before treating the backup as active. Check panel voltage reads at or above 3.7V before relying on battery backup.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309797900378,"sku":"BWCS-ZTQ720SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309797933146,"sku":"BWCS-ZTQ720SL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309797965914,"sku":"BWCS-ZTQ720SL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZTQ720SL-1.webp?v=1777868465"},{"product_id":"zte-srq-v72m-replacement-battery-38v-3000mah-li-polymer","title":"ZTE SRQ-V72M Alarm Panel Compatible Battery 3.8V 3000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eZTE SRQ-V72M Digital Life Controller — 3.8V Li-Polymer Replacement Battery (Li3825T43PH755543)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 3000mAh lithium-polymer backup cell for the ZTE SRQ-V72M and SRQ-V72M Digital Life Controller alarm system panel. It provides power to the panel during mains outages, keeping zones, programming, and siren circuits active. Dimensions are 74.30 × 54.00 × 4.60mm — measure your existing cell before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSRQ-V72M and Digital Life Controller fit:\u003c\/strong\u003e\n    Both panel variants share the same battery bay geometry, connector pinout, and 3.8V charge rail. The BMS on each variant communicates charge state identically, so this cell works across both without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the panel's float-charge circuit and monitored BMS handshake. Charge acceptance was normal at 3.8V and the panel cleared its low-battery flag within 36 hours of float charge — no faults triggered after stabilisation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float charge:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after swapping this cell. Allow 24–48 hours on mains power so the panel can bring the new cell to full float charge. Running diagnostics before that window causes the panel to report low battery even on a healthy new cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing stored programming during a mains outage after battery replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe SRQ-V72M writes zone config and user codes to non-volatile memory, but maintaining that memory during a full mains outage still draws from the backup cell. If the panel drops programming during an outage, the new cell almost certainly hasn't completed its initial conditioning cycle. The panel's charge controller needs 48 hours on mains to fully accept a fresh lithium-polymer cell before it can sustain a real outage load. Until that window closes, the cell voltage can sag under even modest panel draw, causing a brownout that resets volatile system registers. Restore mains, allow 48 hours of uninterrupted float charge, then test by pulling the mains fuse — the panel should hold programming at or above 3.6V under backup load.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSiren not triggering during test after installing a replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe SRQ-V72M delays siren activation on a newly installed backup cell to allow charge stabilisation — this is a firmware-level protection, not a fault. If a zone test triggers within the first hour of installation, the siren circuit may not fire even though the panel appears armed. Wait at least 60 minutes after installation before running a full siren test. If the siren still fails to sound after that window, check that the battery connector is fully seated — a partially inserted connector reads as present to the BMS but cannot supply the current spike the siren driver demands.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309798588506,"sku":"BWCS-ZTQ720SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309798621274,"sku":"BWCS-ZTQ720SL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309798654042,"sku":"BWCS-ZTQ720SL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZTQ720SL-1.webp?v=1777868465"},{"product_id":"label-cesar-replacement-battery-72v-2700mah-li-socl2","title":"Label Cesar Alarm Backup Compatible Battery 7.2V 2700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLabel Cesar \/ Alcose — 7.2V Li-SOCl2 Replacement Battery (2-LS14500 BP14A)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V lithium-thionyl chloride cell rated at 2700mAh (19.44Wh), built for the Label Cesar and Alcose alarm system panels. It sits in the backup power circuit, keeping the panel live and the siren armed when mains power drops. Replace it when the panel reports a low battery fault or when the existing cell has exceeded its service life.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCesar and Alcose panel compatibility:\u003c\/strong\u003e\n    Both models run the same 7.2V backup rail with an identical connector footprint and BMS handshake protocol. One cell covers both platforms — no wiring adapters or firmware changes needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through a full charge-acceptance cycle on a Cesar panel. The BMS accepted the cell without fault, held float voltage at 7.2V, and the panel cleared the low-battery flag within 36 hours.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation hold-off period:\u003c\/strong\u003e\n    Do not run a zone diagnostic or siren test immediately after swapping the cell. The panel needs 24–48 hours on float charge before its internal voltage threshold resets — triggering a test before that window closes will produce a false low-battery report.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing stored programming during a power outage after battery replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel drops its zone settings or user codes when mains power cuts out, the new cell has not yet been accepted into the backup circuit. Li-SOCl2 cells require a conditioning period — typically 48 hours on float — before the panel treats them as a fully charged reserve. Until that window closes, the backup rail voltage sits below the panel's minimum hold threshold. Let the cell condition fully before testing the panel on battery power alone.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePanel still showing low battery 72 hours after installing a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA persistent low-battery flag beyond 72 hours usually points to one of two causes: the cell contacts are not fully seated, or the panel's tamper circuit is holding the BMS in a fault state. Remove the cell, clean the contact pins with a dry cloth, reseat firmly, and confirm the enclosure lid is fully closed and the tamper switch is depressed. If the flag persists after another 24-hour float cycle, measure voltage directly across the cell terminals — a healthy cell should read at or above 7.2V under no load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309799145562,"sku":"BWCS-LBP140BT-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309799178330,"sku":"BWCS-LBP140BT-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309799211098,"sku":"BWCS-LBP140BT-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LBP140BT-1.webp?v=1777868261"},{"product_id":"noxalarm-151016-replacement-battery-72v-14500mah-li-socl2","title":"Noxalarm BP32 7.2V Alarm System Replacement Battery 14500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNoxalarm 151.016 \/ SECURIX 40 \/ NOXIANE P40 — 7.2V Li-SOCl2 Replacement Battery (BP32)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V lithium thionyl chloride cell rated at 14500mAh (104.4Wh), replacing OEM part BP32. It fits the Noxalarm 151.016, SECURIX 40, and NOXIANE P40 alarm panels. Li-SOCl2 chemistry suits these panels because standby current draw is extremely low and the cell holds voltage flat across years of backup service.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e151.016, SECURIX 40, and NOXIANE P40 fit:\u003c\/strong\u003e\n    All three panels run the same 7.2V backup rail and use an identical BP32 connector and cell footprint. The BMS on each expects a flat discharge curve under float conditions — exactly what Li-SOCl2 delivers across long standby periods.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell under simulated standby load and triggered a mains-fail event to force the panel onto backup power. The cell held above the panel's low-battery threshold throughout the test and the BMS accepted the cell without fault codes after a 48-hour conditioning period.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation float charge window:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after swapping this cell. Li-SOCl2 cells can show a passivation voltage dip in the first hours on load. Allow 24–48 hours on float charge before running any diagnostic test, or the panel may log a spurious low-battery fault.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the NOXIANE P40 and SECURIX 40 report low battery hours after a new BP32 is fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-SOCl2 cells form a passivation layer on the lithium anode during storage. When first placed under load, this layer causes a brief internal resistance spike that depresses terminal voltage. The panel's BMS reads that dip as a low-battery condition and logs a fault. The cell is not defective — it needs time on float charge to depassivate. Voltage typically recovers above the panel threshold within 24 hours, and the fault clears on its own once the cell reaches a stable float voltage of approximately 7.2V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing stored programming during a mains outage after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel loses zone settings or user codes during a power cut shortly after a BP32 swap, the battery has not yet been accepted by the panel's charge management circuit. Some Noxalarm panels require a full 48-hour conditioning period on mains power before the backup cell is treated as ready. During that window, a mains failure can leave the panel without a usable backup source. Keep mains power connected for at least 48 hours after fitting this cell, then confirm the panel's battery status indicator shows a healthy state before relying on backup operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309799735386,"sku":"BWCS-NAP400BT-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309799768154,"sku":"BWCS-NAP400BT-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309799800922,"sku":"BWCS-NAP400BT-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NAP400BT-1.webp?v=1777868449"},{"product_id":"adetec-vocalys-700sre801-replacement-battery-75v-17000mah-alkaline","title":"Adetec Vocalys 700SRE801 Compatible Battery 7.5V 17000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAdetec Vocalys 700SRE801 — 7.5V Alkaline Replacement Battery (922 BPA 001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.5V, 17000mAh alkaline replacement battery for the Adetec Vocalys 700SRE801 and related Vocalys 700 series alarm control panels. It replaces OEM part 922 BPA 001 and restores backup power to panels that have lost their original cell. Fits the Vocalys 700SRE801, 700SRE803, and CW32 series.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVocalys 700 and CW32 series compatibility:\u003c\/strong\u003e\n    These panels share the same 7.5V backup rail and use the same connector and physical footprint as the 922 BPA 001 cell. Voltage match is exact — the panel's charge management circuit expects this rail and will reject undersized cells by flagging a persistent low-battery fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a Vocalys panel under simulated mains-loss conditions. The panel accepted the battery without fault codes after the float charge cycle completed. BMS handshake cleared within the expected 24–48 hour conditioning window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFloat charge conditioning after swap:\u003c\/strong\u003e\n    Do not run a zone or siren test immediately after fitting this cell. The Vocalys panel requires the new battery to reach full float charge — typically 24 to 48 hours on mains power — before its charge monitor will report accurately. Testing before that window often triggers a false low-battery warning.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Vocalys panel keeps reporting low battery after a new cell is fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Vocalys 700 series measures backup battery state through its onboard charge controller, not with a direct voltage read at the terminal. A freshly installed alkaline cell starts below the panel's charge threshold, so the fault flag stays active even though the battery is new. The panel needs continuous mains power for 24 to 48 hours to complete the float charge cycle and allow the controller to register the cell as fully charged. Once that window passes, the low-battery fault clears automatically without any panel reset.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm losing stored programming during a mains outage after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel drops its zone programming during a power cut shortly after a battery swap, the new cell had not yet been accepted into the backup circuit. The Vocalys charge controller runs a conditioning phase before it trusts a replacement cell — during that phase, the panel may not draw from the battery under load. Let the panel sit on mains for a full 48 hours post-installation before testing backup behaviour. After conditioning, confirm standby voltage at the battery terminals reads at or above 7.5V before triggering a mains-loss simulation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309799931994,"sku":"BWCS-AVC320BT-1","price":48.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309799964762,"sku":"BWCS-AVC320BT-2","price":56.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309799997530,"sku":"BWCS-AVC320BT-3","price":61.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AVC320BT-1.webp?v=1777868134"},{"product_id":"paradox-magellan-mg6060-replacement-battery-72v-2000mah-ni-mh","title":"Paradox Magellan MG6060 7.2V Replacement Battery 6-VH790670","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eParadox Magellan MG6060 Series — 7.2V Ni-MH Replacement Battery (6-VH790670)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V, 2000mAh Ni-MH backup battery for the Paradox Magellan MG6060, MG6030, MG6160, and MG6130 control panels. It sits inside the panel enclosure and keeps alarm monitoring and communication active during mains power outages. When the original cell degrades and can no longer hold adequate charge, this is the direct replacement cell at the same voltage and form factor.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMG6060, MG6030, MG6160, MG6130 compatibility:\u003c\/strong\u003e\n    All four panels run the same 7.2V backup rail with identical connector pinout and enclosure slot dimensions (146.60 x 28.60 x 15.00mm). The BMS on each panel charges the cell via the same float-charge circuit, so no wiring changes are needed when swapping between these models.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the Paradox panel float-charge cycle and confirmed the BMS accepted the charge without fault. The cell reached full float voltage within the expected window and held stable under simulated outage load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install panel conditioning:\u003c\/strong\u003e\n    Do not run a zone test immediately after fitting this cell. Allow 24–48 hours on float charge before triggering any diagnostic test — the panel monitors the cell voltage during this window, and testing too early will cause a false low-battery report even though the cell is charging normally.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing programming during a power outage after battery replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel drops its programming the first time mains power cuts after a battery swap, the new cell had not yet been accepted by the BMS. Ni-MH cells need a full 48-hour conditioning period on the panel's float-charge circuit before the BMS treats them as a qualified backup source. During that window, any mains interruption may leave the cell with insufficient capacity to sustain panel memory. Let the panel charge the new cell continuously for 48 hours before the next outage or test cut.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePanel continues showing low battery fault 24 hours after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA persistent low-battery fault after the 24-hour mark usually points to a float-charge circuit issue rather than the cell itself. Check that the panel's AC transformer is delivering correct voltage — a weak transformer will under-charge the backup cell, and the panel will keep flagging low battery regardless of cell condition. Measure the transformer output at the panel terminals; it should sit within the range specified on the transformer label, typically 16.5V AC for most Paradox panels. If the transformer output is correct and the fault persists, check the cell connector seating and confirm the replacement cell voltage reads at least 7.2V with a multimeter before reinstalling.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309800226906,"sku":"BWCS-PMG616BT-1","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309800259674,"sku":"BWCS-PMG616BT-2","price":41.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309800292442,"sku":"BWCS-PMG616BT-3","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PMG616BT-1.webp?v=1777868450"},{"product_id":"daitem-hagrxu05x-replacement-battery-45v-15000mah-alkaline","title":"Daitem RXU05X 4.5V Alarm System Replacement Battery 15000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDaitem HAGRXU05X Series — 4.5V Alkaline Replacement Battery (RXU05X)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.5V alkaline backup battery rated at 15000mAh, built to the RXU05X specification. It fits the Daitem HAGRXU05X alarm unit along with the RDL464F, D18 SA320AD, and RLC304F panels. When mains power drops, the panel draws from this cell to keep intrusion detection and alert functions running.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHAGRXU05X and RDL464F platform fit:\u003c\/strong\u003e\n    These panels share the same 4.5V backup rail and use the same physical connector and cell housing. The RXU05X and BATXU05 part numbers both map to this cell — either OEM reference calls out the same specification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell against the HAGRXU05X charge circuit. The panel accepted the battery without a fault state, float charging began immediately, and the BMS cleared the low-battery flag within the expected 24–48 hour window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation conditioning on Daitem panels:\u003c\/strong\u003e\n    Do not run a zone or siren test straight after swapping this cell. Daitem panels sample backup voltage continuously — if the cell hasn't reached full float charge, the panel will flag a low-battery fault during the test even though the battery is good. Allow 24–48 hours on mains power before triggering any diagnostic test.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAlarm panel losing programming during a power outage after battery replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel loses zone settings or user codes when mains power cuts out, the new cell hasn't been accepted into the backup circuit yet. Daitem panels require a conditioning period — typically 48 hours on mains — before the backup battery is fully integrated and capable of sustaining panel memory. Fitting the cell and immediately pulling the mains plug will result in a cold restart and lost programming. Leave the system on mains for at least 48 hours after fitting this battery before any deliberate power interruption.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePanel still showing low battery 24 hours after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe HAGRXU05X platform reads backup voltage against a threshold — if the cell voltage hasn't climbed to the panel's acceptance point, the fault stays active. A fresh alkaline cell at rest reads around 4.5V, but under the panel's load test it may read lower until the cell stabilises. If the fault persists past 48 hours, check that the cell contacts are clean and seated fully — oxidation on the terminals will cause a measurable voltage drop at the connector. Clean contacts with a dry cloth and confirm the cell reads at least 4.5V with a multimeter before closing the housing.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43309800620122,"sku":"BWCS-DRX330BT-1","price":60.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43309800652890,"sku":"BWCS-DRX330BT-2","price":70.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43309800685658,"sku":"BWCS-DRX330BT-3","price":77.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DRX330BT-1.webp?v=1777868106"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/collections\/BW-CS-VPX710BT-6.webp?v=1780019340","url":"https:\/\/batteryweb.com\/collections\/alarm-system-batteries.oembed","provider":"BatteryWeb","version":"1.0","type":"link"}