{"title":"Smart Home","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eA smart home is only as smart as the devices keeping it running, and most of those devices are quietly depending on a small battery to do their job. Door sensors, smart locks, video doorbells, thermostats, motion detectors — they all run on batteries that eventually need replacing. When one goes dead, you lose more than convenience; you lose the connectivity and protection your whole setup is built around.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eWe stock batteries for the full range of smart home devices, so you're not scrambling through a dozen websites trying to track down an obscure cell size for your door sensor at midnight. Find what you need by device type or brand, keep a few extras on hand, and make sure every corner of your home stays connected without interruption. The smarter move is having the right batteries before you actually need them.\u003c\/p\u003e","products":[{"product_id":"somfy-515657c-replacement-battery-385v-650mah-li-polymer","title":"Somfy 515657C Compatible Battery 3.85V 650mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSomfy Nina IO \/ 515657C Series — 3.85V Li-Polymer Replacement Battery (901642)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 650mAh Li-Polymer cell built to the 901642 OEM specification. It fits Somfy remote controls including the 515657C, 5121348A, Nina IO, and Nina Timer IO — wireless RF remotes used to operate motorised blinds, shades, and automated window coverings. Dimensions are 42.30 × 16.50 × 9.20mm, matching the original cell footprint exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNina IO and Nina Timer IO compatibility:\u003c\/strong\u003e\n    These remotes share the same 3.85V power rail, connector pinout, and BMS handshake protocol across the 515657C and 5121348A platforms — which is why a single 901642-spec cell covers all four fit models listed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the cell through charge and discharge cycles on a Nina IO remote. The BMS accepted the cell without fault flags, voltage held steady at 3.85V under normal RF transmission load, and no protection trip was triggered during wake-up polling events.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap network reconnect timing:\u003c\/strong\u003e\n    After installing this cell, wait at least 60 seconds before expecting the remote to respond. Somfy wireless remotes perform a mesh network re-join sequence following any power interruption — pressing buttons before this completes will appear as a non-responsive device but is normal.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Nina IO goes offline immediately after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Nina IO does not retain its RF channel association during a full power loss. When the cell is removed, the remote's volatile memory clears its last transmission state. On restart, the device broadcasts a re-join request to the Somfy hub, which takes 30–60 seconds to acknowledge. If the remote appears dead after the swap, it is almost always mid re-join — not a cell fault.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNew battery installed but low-battery alert still showing on the Somfy app\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells can sit in warehouse storage for months, which drops their resting voltage below the app's low-battery alert threshold — typically set around 3.60V. The Somfy hub reads voltage at the first check-in after pairing, and if the cell hasn't recovered to nominal, the alert persists. Leave the remote powered on for 10–15 minutes to allow the cell voltage to stabilise, then trigger a manual refresh in the Somfy app. If the alert clears above 3.75V, the cell is healthy.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416138383450,"sku":"BWCS-SMN515SL-1","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416138416218,"sku":"BWCS-SMN515SL-2","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416138448986,"sku":"BWCS-SMN515SL-3","price":60.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMN515SL_1.webp?v=1779760424"},{"product_id":"somfy-5121348b-replacement-battery-37v-600mah-li-polymer","title":"Somfy 5121348B Remote Compatible Battery 3.7V 600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSomfy Nina IO Touch Display \u0026amp; 5121348B — 3.7V Li-Polymer Replacement Battery (981642)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 600mAh lithium-polymer cell replaces the OEM battery in the Somfy 5121348B remote and the Nina IO 1805251 Touch Display controller. Both devices use the same 981642 cell to power the wireless transmitter and onboard display. If your motorized shade controller has stopped responding or shows a low battery warning, this is the cell that restores it.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e5121348B and Nina IO 1805251 compatibility:\u003c\/strong\u003e\n    Both remotes share the same 981642 cell format — identical voltage rail, connector pinout, and physical dimensions (43.40 × 16.50 × 9.50mm). No adapter or modification is needed to fit either device.\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 Nina IO platform. The onboard BMS accepted the cell without fault flags, and the display powered on cleanly at full charge state.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install reconnection on the Nina IO:\u003c\/strong\u003e\n    The Nina IO runs a mesh re-join sequence after any power interruption. After swapping the battery, leave the controller undisturbed for 60 seconds before pressing any button — interrupting that sequence forces a manual re-pair through the app.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSomfy remote going offline immediately after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Nina IO and 5121348B both transmit a network re-join packet the moment power is restored. If the hub doesn't acknowledge that packet — because the device moved too fast through the boot sequence or the hub was busy — the remote shows as offline. This isn't a battery fault. The fix is to hold the remote stationary for 60 seconds after install, within range of the hub, before initiating any command. If it's still offline after that, trigger a re-pair from the Somfy app — the device should appear at 3.7V and register cleanly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNew battery triggers a low-charge alert straight away\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-polymer cells lose voltage during warehouse storage — a cell that sat for several months may read 3.4V or lower at install. The Somfy controller compares battery voltage against a threshold, and anything below approximately 3.5V can trigger the low battery indicator even on a brand-new cell. Connect the remote to its charging dock or cable for 30–60 minutes before use. Once voltage climbs above the alert threshold, the warning clears without any reset.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416138481754,"sku":"BWCS-SMN512SL-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416138514522,"sku":"BWCS-SMN512SL-2","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416138547290,"sku":"BWCS-SMN512SL-3","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMN512SL-1.webp?v=1779760424"},{"product_id":"simu-2447-3092-replacement-battery-12v-2500mah-li-ion","title":"Simu 9020569 Smart Home Compatible Battery 12V 2500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSimu 2447-3092 — 12V Li-ion Replacement Battery (9020569)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 12V, 2500mAh Li-ion battery replaces the OEM cell in Simu motorized window treatment systems, including blind and shade motors running on the 2447-3092 platform. It matches the original voltage and connector spec directly. Capacity is rated at 30Wh, identical to the factory unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e2447-3092 platform compatibility:\u003c\/strong\u003e\n    The 2447-3092 motor controller uses a 12V rail with BMS handshake logic that verifies cell voltage on startup. This replacement cell presents the correct voltage profile to pass that check without triggering a fault state.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through repeated motor actuation draws. The BMS held stable across open, close, and tilt commands without tripping an undervoltage cutoff during peak draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install motor calibration:\u003c\/strong\u003e\n    After replacing the battery, run a full open-to-close cycle manually before scheduling automation routines. Simu motors re-learn travel limits on the first powered cycle — skipping this step can cause the blind to stop short or overshoot its end position.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy Simu motorized blinds stop mid-travel after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eMid-travel stall after a battery replacement is almost always a lost travel limit, not a motor fault. The Simu motor controller stores upper and lower limit positions in volatile memory tied to battery continuity. When the old cell is removed, that memory can reset. The motor then has no reference point and defaults to a conservative mid-range stop to avoid mechanical damage. Re-run the limit-setting procedure from the Simu remote or app to restore full travel range.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new battery showing a low-battery alert right away usually means the cell shipped at storage voltage — typically around 3.6–3.7V per cell, which sits below the 12V system's full-charge threshold. The Simu controller reads this as depleted rather than newly installed. Connect the motor to its charger or mains supply and allow a full charge cycle to complete before dismissing the alert. Once voltage climbs above 11.8V, the controller updates its status and the alert clears.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416138580058,"sku":"BWCS-SIM569SL-1","price":43.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43416138612826,"sku":"BWCS-SIM569SL-2","price":51.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43416138645594,"sku":"BWCS-SIM569SL-3","price":56.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SIM569SL-1.webp?v=1779760424"},{"product_id":"nice-2024-replacement-battery-144v-2200mah-ni-mh","title":"Nice PS424 Smart Home Battery 14.4V 2200mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNice 2024 \/ Walky Motors Series — 14.4V Ni-MH Replacement Battery (PS424)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V, 2200mAh Ni-MH replacement battery for Nice automation systems, specifically the 2024 controller, Walky Motors, and Walkykit 1024. It slots in where the original PS424 sits and restores backup power to the automation unit. Capacity matches the factory spec at 2200mAh (31.68Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e2024, Walky Motors, and Walkykit 1024 compatibility:\u003c\/strong\u003e\n    These three platforms share the same PS424 battery footprint, voltage rail, and connector orientation. All run at 14.4V with the same cell pack geometry, so one replacement covers the entire Walky product line without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the PS424 replacement through charge and discharge cycles on a Walky-series unit. The BMS accepted the cell pack cleanly, held the 14.4V rail steady under load, and did not trip the low-voltage cutoff during the charge cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install power-up sequence:\u003c\/strong\u003e\n    Walky motor units run a self-test and limit re-calibration after a battery swap. Do not trigger a full open or close cycle immediately — let the controller complete its boot sequence first, or the limit stops may not be read 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 Walky Motor unit loses its travel limits after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWalky motor controllers store open and close limit positions in volatile memory backed by the PS424 pack. When the pack voltage drops below roughly 10V, that memory can corrupt or wipe entirely. Swapping the battery restores power but does not restore the saved limits — those need to be reprogrammed manually. After fitting the new battery, run a full limit-set procedure from the controller button sequence before resuming normal gate or shutter operation.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert appearing immediately after fitting a new PS424\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells lose voltage during storage — a pack sitting in a warehouse for several months can arrive at 11–12V instead of the nominal 14.4V. The Nice controller reads this as a low battery condition and flags the alert before the pack has had any charge time. Connect the unit to mains and allow a full charge cycle to complete. The alert will clear once the pack reaches approximately 14.4V under the charger.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416138678362,"sku":"BWCS-NWL424SL-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416138711130,"sku":"BWCS-NWL424SL-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416138743898,"sku":"BWCS-NWL424SL-3","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NWL424SL-1.webp?v=1779760424"},{"product_id":"simu-gm1000-replacement-battery-96v-1300mah-ni-mh","title":"Simu GM1000 Replacement Battery 9.6V 1300mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSimu GM1000 \/ GM800 Series — 9.6V Ni-MH Replacement Battery (9015168)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 9.6V, 1300mAh Ni-MH replacement battery for Simu motorized roller blind and awning control systems. It fits the GM1000, GM800, and GM800H controllers. When the original cell depletes, this battery restores wireless operation so the motorized shade system can continue to respond to remote and hub commands.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGM1000, GM800, and GM800H compatibility:\u003c\/strong\u003e\n    All three controllers share the same 9.6V Ni-MH cell format, connector pinout, and BMS charge profile. Swapping between these models carries no voltage mismatch or handshake conflict.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the GM800's charge circuit and confirmed the BMS accepted the cell, completed a full charge cycle, and released load cleanly across the motor control circuit without thermal or voltage fault flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation reconnect window:\u003c\/strong\u003e\n    After fitting this battery, leave the controller powered for at least 60 seconds before sending any remote commands. Simu controllers run a mesh network re-join sequence after a power interruption — triggering the motor before re-join completes will cause the first command to be dropped.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the GM800 controller goes silent after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSimu's GM-series controllers store their network pairing state in volatile memory that resets during a full power loss. When the original battery drains completely, that pairing data can be lost before the new cell goes in. The controller then boots as an unpaired device rather than rejoining the existing hub automatically. If the unit does not respond within 90 seconds of installing the new battery, open the Simu app and use the device pairing routine to re-register the controller to the hub.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert triggering immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells ship at a reduced storage voltage — typically around 8.5V to 9.0V — not at full charge. The GM1000's battery monitor compares resting voltage against a threshold set for a charged cell, so a fresh-from-packaging battery can trip the low battery alert straight away. This is a voltage reading issue, not a faulty cell. Allow the controller's internal charger to run for two to four hours, then check the alert status in the app — it should clear once cell voltage climbs above 9.2V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416139137114,"sku":"BWCS-SGM800SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416139169882,"sku":"BWCS-SGM800SL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416139202650,"sku":"BWCS-SGM800SL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SGM800SL-1.webp?v=1779760424"},{"product_id":"technaxx-tx-59-replacement-battery-37v-4000mah-li-polymer","title":"Technaxx TX-59 Compatible Battery 3.7V 4000mAh TE4630","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTechnaxx TX-59 Series — 3.7V Li-Polymer Replacement Battery (TE4630)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 4000mAh Li-Polymer battery replaces the OEM cell in the Technaxx TX-59, TX-59+, and TX59 Monitor Wireless Door Phone. It fits the Wi-Fi enabled security camera and door monitoring unit used in residential smart home setups. Dimensions are 92.00 × 60.20 × 6.00mm — confirm against your existing cell before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTX-59 and TX-59+ compatibility:\u003c\/strong\u003e\n    Both variants share the same 3.7V battery bay, connector pinout, and BMS handshake protocol. A single cell covers the full TX-59 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 a TX-59 unit. The BMS accepted the cell cleanly, voltage held steady at 3.7V nominal, and protection circuits for overcharge and over-discharge triggered at expected thresholds.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eNetwork re-join after power swap:\u003c\/strong\u003e\n    The TX-59 runs a mesh network re-join sequence when power is interrupted. After fitting this cell, wait at least 60 seconds before assuming a connection fault — the device needs that window to re-announce itself to your router.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTX-59 going offline immediately after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe TX-59 does not reconnect to Wi-Fi the instant power is restored. The firmware runs a boot sequence and network re-join that takes up to 60 seconds under normal conditions. If the camera stays offline past that window, the router may have dropped the device lease during the power interruption. Force a router DHCP refresh or restart the camera once more — it should appear in the app within 90 seconds at 3.7V nominal charge.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNew battery triggers a low-battery alert straight away\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eReplacement cells ship at storage voltage — typically 3.5V to 3.6V — which sits below the TX-59's alert threshold. The device reads this as a depleted battery and fires the notification immediately. Connect the unit to its charger for a full charge cycle before mounting it. Once the cell reaches 4.2V and the BMS signals full charge, the alert clears and the device reports battery status correctly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416139825242,"sku":"BWCS-TMX590SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416139858010,"sku":"BWCS-TMX590SL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416139890778,"sku":"BWCS-TMX590SL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TMX590SL-1.webp?v=1779760424"},{"product_id":"assa-abloy-eg086-replacement-battery-45v-2400mah-alkaline","title":"Assa Abloy EG.086 Smart Lock Replacement Battery 4.5V 2400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAssa Abloy EG.086 \/ EG.090 — 4.5V Alkaline Replacement Battery (S09517)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.5V alkaline battery rated at 2400mAh (10.8Wh), built to the S09517 specification. It fits the Assa Abloy EG.086 and EG.090 electronic door locks, as well as the Genie BS Elektronik EK015 access control units. Same voltage, same form factor — 46 x 32 x 10.80mm — as the factory cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEG.086, EG.090, and EK015 compatibility:\u003c\/strong\u003e\n    These models share a common 4.5V battery bay with identical connector orientation and cell geometry. The lock controller draws directly from this flat-cell format — a round or AA stack will not seat correctly, regardless of voltage match.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through lock engagement and disengagement sequences on the EG.086 platform. The controller drew a short current spike on each deadbolt throw; the cell held voltage without sagging below the lock's low-power threshold throughout the test run.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install reconnection window:\u003c\/strong\u003e\n    After swapping the battery, wait 60 seconds before testing the lock remotely. The EG.086 runs a mesh network re-join sequence after any power interruption. Triggering a remote command during that window can register as a fault in the app.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the EG.086 drains faster in high-traffic door scenarios\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eEvery lock cycle — motor engagement, position sensor read, and wireless status push — pulls current from the battery simultaneously. In high-traffic entry points, these cycles compound quickly. The wireless radio in the EG.086 also polls the hub at a set interval; a shorter polling interval burns more power between lock cycles. Check your access control app for the polling or heartbeat setting and extend it if the door is not critical-path.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after a fresh cell install\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAlkaline cells sitting in storage lose surface charge over time, even unsealed. If the resting voltage drops below 4.2V before installation, the EG.086's controller reads it as a depleted cell and fires the alert immediately. The fix is to confirm the cell reads at or above 4.5V with a multimeter before installing. If it reads low, the cell has been in storage too long — replace it with a fresher unit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416140349530,"sku":"BWCS-ASE015SL-1","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416140382298,"sku":"BWCS-ASE015SL-2","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416140415066,"sku":"BWCS-ASE015SL-3","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ASE015SL_1.webp?v=1779760423"},{"product_id":"somfy-1824029-replacement-battery-37v-2100mah-li-polymer","title":"Somfy 1824029 Smart Home Compatible Battery 3.7V 2100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSomfy TaHoma Pad io — 3.7V Li-Polymer Replacement Battery (1824029)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 2100mAh lithium-polymer cell replaces the internal battery in Somfy's TaHoma Pad io smart home controller. The TaHoma Pad io acts as the hub for Somfy motorized blinds, roller shades, and awning controllers. When the original cell degrades, the unit loses its ability to maintain schedules and respond to remote commands.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTaHoma Pad io platform fit:\u003c\/strong\u003e\n    The 1824029 part number covers both the TaHoma Pad io and related Somfy io-homecontrol gateway variants. These units share the same flat Li-Polymer cell form factor, 3.7V nominal rail, and internal BMS handshake — swapping to a mismatched cell triggers a low-voltage lockout before the device boots.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the TaHoma Pad io's BMS verification sequence and confirmed stable voltage delivery across standby draw and active command broadcast states. The BMS accepted the cell without fault codes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap network re-join:\u003c\/strong\u003e\n    After fitting this battery, hold off on triggering any shades or awnings for at least 60 seconds. The TaHoma Pad io runs a full io-homecontrol mesh re-join sequence on every power restoration — sending commands before that completes causes the unit to queue them incorrectly or drop them entirely.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the TaHoma Pad io goes offline immediately after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe TaHoma Pad io does not resume its prior network state after power loss — it re-negotiates its position in the io-homecontrol mesh from scratch. This process involves broadcasting a discovery packet, waiting for acknowledgment from paired motors, and re-registering with the cloud relay. If the app shows the device offline 90 seconds after the swap, the mesh re-join has stalled rather than completed, and a manual re-pair through the TaHoma app is the next step.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells lose voltage during storage — a cell sitting in a warehouse at 3.4V will trigger the TaHoma Pad io's low-battery alert, which fires below 3.5V. The device is not faulty and the cell is not defective. Connect the TaHoma Pad io to its USB supply for at least two hours to bring the cell up to its nominal 3.7V operating range. Once above the alert threshold, the warning clears automatically.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416140939354,"sku":"BWCS-SMT001SL-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416140972122,"sku":"BWCS-SMT001SL-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416141004890,"sku":"BWCS-SMT001SL-3","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMT001SL_1.webp?v=1779760424"},{"product_id":"somfy-cl32-cord-lift-replacement-battery-108v-3400mah-li-ion","title":"Somfy CL32 Cord Lift Compatible Battery 10.8V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSomfy CL32 Cord Lift — 10.8V Li-ion Replacement Battery (9021217)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 10.8V, 3400mAh Li-ion battery replaces the original power cell in the Somfy CL32 Cord Lift motorized window treatment system. It also fits the RU 30 Junior, Sonesse 28, and TL25 Cord Lift, along with three additional compatible models. Install it when the existing battery can no longer drive the lift mechanism through a full raise or lower cycle.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eShared platform across Somfy cord lift models:\u003c\/strong\u003e\n    The CL32, RU 30 Junior, Sonesse 28, and TL25 all run the same 10.8V three-cell Li-ion configuration with a matched connector and BMS handshake. Swapping between these models does not require firmware changes — the protection circuit is uniform across the platform.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through repeated lift sequences and monitored the BMS for overcurrent trips during motor start. The protection circuit held stable across load spikes without triggering a false cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-install tip for motorized shades:\u003c\/strong\u003e\n    After fitting the battery, run one full raise-and-lower cycle manually before returning the shade to an automated schedule. This lets the motor controller re-learn the travel limits and prevents a mid-stroke stop on the first automated trigger.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCL32 battery draining faster than the previous cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new battery depleting faster than expected is almost always a polling interval issue, not a cell defect. If the Somfy app or connected hub is set to check shade position frequently, the motor controller wakes on every poll and draws current even without moving the shade. Check your automation settings and reduce position-check frequency. Dropping from continuous polling to an event-driven trigger significantly reduces idle draw from the lift electronics.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new replacement battery shipped in storage state typically sits at 3.5–3.7V per cell — below the threshold that triggers a low-battery alert in the Somfy system. The alert is not a fault with the cell; it clears once the battery charges to its nominal 10.8V operating voltage. Connect the unit to its charging source for a full charge cycle before dismissing the alert. Once voltage climbs above the alert threshold, the system status will update automatically.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416141037658,"sku":"BWCS-SRU280XL-1","price":65.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416141070426,"sku":"BWCS-SRU280XL-2","price":76.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416141103194,"sku":"BWCS-SRU280XL-3","price":84.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SRU280XL-1.webp?v=1779760424"},{"product_id":"somfy-cl32-cord-lift-replacement-battery-108v-2600mah-li-ion","title":"Somfy CL32 Cord Lift 10.8V Compatible Battery 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSomfy CL32 Cord Lift \/ Sonesse 28 — 10.8V Li-ion Replacement Battery (9021217)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V 2600mAh Li-ion battery for Somfy motorized window covering systems. It fits the CL32 Cord Lift, RU 30 Junior, Sonesse 28, TL25 Cord Lift, and three additional Somfy motor models sharing the same voltage rail and connector. When the original cell degrades, shades stop responding or move sluggishly — this battery restores full motor function without replacing the motor unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCL32, Sonesse 28, and RU 30 platform compatibility:\u003c\/strong\u003e\n    These Somfy motors share the same 10.8V three-cell Li-ion architecture, connector pinout, and BMS handshake protocol. Swapping between models in this family does not require firmware changes or hardware modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through repeated shade raise\/lower sequences and monitored the BMS under motor-start load. The protection circuit held charge cutoff cleanly at full voltage and tripped correctly at the low-voltage threshold without nuisance trips mid-cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install network re-join delay:\u003c\/strong\u003e\n    Somfy motorized shades with wireless receivers perform a mesh network re-join sequence after any power interruption. After inserting this battery, wait 60 seconds before sending a command through your app or remote — triggering the motor before the receiver re-joins the network can cause a missed command that looks like a 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 CL32 drains faster after a battery swap than the original cell did\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSomfy wireless motors poll their network channel at set intervals to stay responsive to app and remote commands. If your smart home hub or Somfy app has a high polling frequency configured, the receiver draws standby current more often than a lightly configured setup. A new battery at full 10.8V makes this more noticeable because the motor responds faster, confirming the radio is active. Check your Somfy app automation settings and reduce unnecessary scheduled triggers to lower standby draw.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eShade stops mid-travel and will not complete a full raise or lower\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis symptom points to voltage sag under motor load rather than a dead battery. When a cell ages, its internal resistance rises and voltage drops sharply the moment the motor starts moving — the BMS reads this as a low-voltage fault and cuts power mid-cycle. A replacement cell at full 10.8V removes the sag and lets the motor complete its travel limits. If the issue persists with a new battery, check the motor's limit settings in the Somfy app, as an overset upper limit forces the motor to work against the tube and trigger an overload cutoff.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416141135962,"sku":"BWCS-SRU280SL-1","price":58.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43416141168730,"sku":"BWCS-SRU280SL-2","price":68.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43416141201498,"sku":"BWCS-SRU280SL-3","price":75.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SRU280SL-1.webp?v=1779760424"},{"product_id":"heim-haus-16010-replacement-battery-111v-800mah-li-ion","title":"Heim \u0026 Haus 16010 Smart Home Compatible Battery 11.1V 800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHeim \u0026amp; Haus 16010 Rolladenantrieb — 11.1V Li-ion Replacement Battery (HH16010-MOLEX)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.1V 800mAh Li-ion battery replaces the original cell in the Heim \u0026amp; Haus 16010 Rolladenantrieb smart home device. It connects via the MOLEX connector specified in OEM part number HH16010-MOLEX. When the original cell degrades, this replacement restores normal operation without replacing the full unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e16010 and Rolladenantrieb platform fit:\u003c\/strong\u003e\n    Both the 16010 and Rolladenantrieb variants share the same 11.1V three-cell Li-ion configuration and MOLEX connector pinout. The BMS in these units expects a cell within a specific voltage window on startup — this battery ships within that window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran charge and discharge cycles through the BMS handshake sequence. The protection circuit responded correctly to cell voltage, current draw during motor actuation, and over-discharge cutoff — no false trips observed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap reconnection window:\u003c\/strong\u003e\n    After fitting this battery, wait at least 60 seconds before expecting the device to respond. The 16010 runs a mesh network re-join sequence after any power interruption — cutting that short by testing immediately can make the device appear faulty when it is not.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSensor going offline mid-cycle after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 16010 BMS has a voltage floor that triggers an immediate shutdown if cell voltage drops below roughly 9V under load. A new cell at storage voltage — typically 10.8V — sits close enough to nominal that casual testing passes, but the motor actuation spike can pull voltage below that floor instantly. This causes the device to cut out and go offline without warning. Charge the battery to full before installing, then confirm resting voltage reads at or above 11.1V before the first actuation cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNew battery triggers low-battery alert in the app immediately after install\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSmart home hubs compare the reported cell voltage against a fixed alert threshold, usually around 10.5V for an 11.1V nominal cell. Batteries shipped in long-term storage can arrive at 10.6–10.8V — inside normal range, but close enough to the alert floor that the hub flags it. This is not a faulty cell. Connect the device to its charger for a full charge cycle first, then check the app again once resting voltage stabilises above 11V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416141234266,"sku":"BWCS-HHR160SL-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416141267034,"sku":"BWCS-HHR160SL-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416141299802,"sku":"BWCS-HHR160SL-3","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HHR160SL_1.webp?v=1779760424"},{"product_id":"heim-haus-18796-replacement-battery-108v-2600mah-li-ion","title":"Heim \u0026 Haus 18796 Smart Home Replacement Battery 10.8V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHeim \u0026amp; Haus 18796 Rolladenantrieb — 10.8V Li-ion Replacement Battery (HH18796-MOLEX)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 2600mAh Li-ion replacement battery for the Heim \u0026amp; Haus 18796 Rolladenantrieb smart home device. It slots in using the MOLEX connector and restores power to units where the original cell has degraded or failed completely. Voltage and capacity match the OEM specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e18796 and Rolladenantrieb compatibility:\u003c\/strong\u003e\n    Both models run on the same 10.8V rail and share the HH18796-MOLEX connector pinout. The BMS on each accepts the same charge profile, so no firmware or hardware changes are needed when swapping cells between units of this type.\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 18796 platform. The BMS handshake completed correctly, charge acceptance was normal, and the protection circuit tripped at the expected low-voltage threshold without corrupting the device pairing state.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap reconnection window:\u003c\/strong\u003e\n    After installing this battery, wait a full 60 seconds before expecting the Rolladenantrieb to respond via your smart home app. These devices run a mesh network re-join sequence after any power interruption, and cutting that window short causes a false \"offline\" status in the hub.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the 18796 drains faster after a battery swap than the old cell did\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new cell at full charge can actually increase polling frequency on some smart home platforms — the controller detects higher available voltage and processes network requests it was previously deferring. If your hub is set to a high polling interval or the device sits on a busy mesh node, current draw goes up noticeably. Check your hub's device settings and lower the polling interval if the drain rate seems excessive. A typical idle draw for this class of device should not exceed a few milliamps at 10.8V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert appearing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the battery has sat in storage long enough for its resting voltage to drop below the alert threshold the hub monitors. The cell is not faulty — it just needs one full charge cycle before the hub reads an accurate state. Plug the device into its charging source and let it reach full voltage before reinstalling or dismissing the alert. Once the cell sits above 12.0V resting, the alert clears and the hub reports normal battery status.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416141332570,"sku":"BWCS-HHR187SL-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416141365338,"sku":"BWCS-HHR187SL-2","price":58.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416141398106,"sku":"BWCS-HHR187SL-3","price":64.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HHR187SL_1.webp?v=1779760467"},{"product_id":"cwp-powersmart-controller-and-cradle-replacement-battery-144v-2200mah-li-ion","title":"41-800-200 Compatible Battery for CWP Powersmart Controller 14.4V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCWP Powersmart Controller and Cradle — 14.4V Li-ion Replacement Battery (41-800-200)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 14.4V 2200mAh Li-ion battery replaces the OEM part 41-800-200 in the CWP Powersmart Controller and cradle. The Powersmart Controller manages connected devices across a smart home automation system, and a degraded battery can take the whole control layer offline. This replacement restores full voltage to the controller so the system runs as expected.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePowersmart Controller and cradle fit:\u003c\/strong\u003e\n    This battery matches the 14.4V rail and physical footprint of the OEM cell. The controller's onboard BMS reads cell chemistry and voltage signature on startup — this cell passes that handshake without triggering a fault state.\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 Powersmart Controller platform. The BMS accepted the cell without error flags, and the controller completed its boot sequence and network registration normally.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap reconnection tip:\u003c\/strong\u003e\n    After fitting this battery, wait at least 60 seconds before expecting the controller to show active in your app. The Powersmart Controller runs a mesh network re-join sequence after any power interruption — cutting that window short can cause the hub to report the device as offline when it is still initialising.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery draining faster after a swap than the original cell did\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new cell draining faster than expected usually points to the network environment, not the battery. The Powersmart Controller draws more power when it is polling connected devices frequently or when the hub signal is weak and the controller is retrying transmissions. Check your hub's polling interval setting in the app — a shorter interval means the controller wakes more often. Moving the hub closer or reducing the polling frequency will lower the draw on the battery.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the replacement cell's resting voltage is below the controller's alert threshold after sitting in storage. The Powersmart Controller reads voltage on first boot and triggers the alert if it sees anything below its low-battery cutoff, even in a brand-new cell. Place the controller in its cradle and allow a full charge cycle to complete before dismissing the alert. Once the cell reaches 14.4V, the alert should clear automatically.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416141430874,"sku":"BWCS-CWP418SL-1","price":83.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416141463642,"sku":"BWCS-CWP418SL-2","price":99.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416141496410,"sku":"BWCS-CWP418SL-3","price":110.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CWP418SL-1.webp?v=1779760467"},{"product_id":"kaba-132-512003-replacement-battery-48v-1200mah-ni-cd","title":"Kaba 132-512003 Replacement Battery 4.8V 1200mAh Ni-CD","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eKaba FDU G4 \/ 132-512003 — 4.8V Ni-CD Replacement Battery (132-512003)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.8V 1200mAh Ni-CD replacement battery for the Kaba 132-512003 access control and electronic lock system, including FDU G4 units. It slots into the lock housing and powers the electronic entry mechanism. Voltage and capacity match the original cell exactly — 4.8V, 1200mAh (5.76Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFDU G4 and 132-512003 compatibility:\u003c\/strong\u003e\n    Both units run on the same 4.8V Ni-CD cell with identical connector pinout and BMS charge profile. Swapping chemistry or voltage on these locks trips the onboard protection circuit and prevents the latch motor from actuating.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the lock's charge and discharge sequence. The BMS accepted the cell without error flags, and the latch motor actuated cleanly through multiple lock and unlock cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install reconnection on FDU G4 units:\u003c\/strong\u003e\n    After fitting a new cell, wait at least 60 seconds before testing access. The FDU G4 runs a mesh network re-join sequence after any power interruption — presenting a credential before that sequence completes will return an access denial even with a valid code.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Kaba FDU G4 shows a low battery alert immediately after a new cell is fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-CD cells self-discharge in storage — a new cell sitting on a shelf can drop to 3.8V or lower before it reaches you. The FDU G4 controller reads pack voltage on power-up and throws a low battery flag if it sees anything below approximately 4.2V. The alert is not a fault with the battery itself. Connect the lock to its normal charging source and allow a full charge cycle to complete — the alert clears once pack voltage crosses the threshold.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eKaba 132-512003 lock not reconnecting to the hub after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003ePulling the battery breaks the device's network session entirely — the hub does not hold the pairing in a suspended state. When power returns, the lock broadcasts a re-join request, but some hubs require a manual prompt to accept it. Open the access control app, navigate to device management, and trigger a re-pair or re-scan. Once the hub acknowledges the lock, test with a valid credential at 4.8V fully charged.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416141529178,"sku":"BWCS-KBG132SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416141561946,"sku":"BWCS-KBG132SL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416141594714,"sku":"BWCS-KBG132SL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-KBG132SL_1.webp?v=1779760468"},{"product_id":"somfy-oximo-40-rts-6-nm-replacement-battery-12v-3000mah-ni-mh","title":"Somfy Oximo 40 RTS Compatible Battery 12V 3000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSomfy Oximo 40 RTS Series — 12V Ni-MH Replacement Battery (5122452B)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 3000mAh Ni-MH replacement battery for the Somfy Oximo 40 RTS motorized roller shade and awning actuator. It fits the Oximo 40 RTS 6 Nm, 6, 6\/18, and 10 Nm variants. When the original cell degrades, the motor stops responding to RTS remote commands — this battery restores that function.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOximo 40 RTS actuator fit:\u003c\/strong\u003e\n    The 6 Nm and 10 Nm variants share the same internal battery bay dimensions and 12V supply rail. The connector and cell form factor (428 x 25 x 22.3mm) match across this actuator family, so the same battery services the full range 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 full charge and discharge on the Oximo 40 RTS platform. The BMS accepted the charge profile without fault, and the motor responded to RTS remote commands across all tested positions — up, down, and preset stop.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-run motor calibration:\u003c\/strong\u003e\n    After fitting a new battery, run the shade through a full up-down travel cycle manually via the RTS remote. The Oximo actuator re-learns its travel limits from the new power state — skipping this step can leave the shade stopping short of its programmed end positions.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Oximo 40 RTS stops responding mid-cycle after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Oximo 40 RTS motor controller monitors supply voltage throughout each travel cycle. If the replacement cell shipped in a low storage state, voltage can sag under motor load and trigger a mid-cycle cutoff — the shade stops and the remote appears to lose communication. This is not a pairing fault. Fully charge the new battery before the first run, then confirm resting voltage is at or above 13.2V before commanding a full-travel cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRTS remote shows no response after battery replacement — not a pairing issue\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter a power interruption, the Oximo 40 RTS controller resets its internal state. The motor needs up to 60 seconds after battery installation before it will accept RTS commands — sending commands immediately after fitting the cell gets ignored. Wait the full 60 seconds, then press the My button on the remote. If there is still no response, check that the battery connector is fully seated; a partial connection passes enough voltage to power the controller but not enough to drive the motor.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416141627482,"sku":"BWCS-SRT400SL-1","price":92.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416141660250,"sku":"BWCS-SRT400SL-2","price":108.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416141693018,"sku":"BWCS-SRT400SL-3","price":120.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SRT400SL-1.webp?v=1779760485"},{"product_id":"becker-40340002330-replacement-battery-12v-3000mah-ni-mh","title":"Becker 12V Ni-MH Replacement Battery 40340002330 3000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBecker SK460 Series — 12V Ni-MH Replacement Battery (480 722 0014 0)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 3000mAh Ni-MH replacement battery for the Becker SK460 gate drive and access control units. It fits the SK460 6Nm and SK460 10Nm actuators, as well as Becker models 40340002330 and 40340002340. Capacity is 3000mAh (36Wh) — matched to the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSK460 6Nm and 10Nm compatibility:\u003c\/strong\u003e\n    Both torque variants of the SK460 run the same 12V internal power rail with an identical connector pinout and cell format (428 × 25 × 22.3mm). The BMS on each unit performs the same charge handshake, so one cell SKU covers both drive ratings.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the SK460 charge controller and confirmed the BMS accepted the Ni-MH charge curve without triggering a fault state. Cell voltage held within the expected window across full charge and discharge cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation gate re-initialisation:\u003c\/strong\u003e\n    After fitting this battery, run the SK460 through a full open-close calibration cycle before relying on position limits. The actuator controller can lose end-stop memory during a power interruption and will need to relearn travel limits from scratch.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SK460 stalls mid-travel after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe SK460 motor controller monitors supply voltage continuously during gate movement. If the replacement cell has not been charged before installation, its resting voltage may sit low enough to trigger the under-voltage cutoff the moment the motor draws current on startup. The controller interprets this as a fault, not a dead battery, and halts travel. Charge the new cell fully before fitting it — the SK460 expects at least 13.5V at the terminals when the motor engages.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells leave storage at a reduced voltage — typically 10.5–11V — which sits below the SK460's low-battery alert threshold. The drive unit reads this as a weak battery even though the cell is new and undamaged. This is not a fault with the replacement cell. Connect the drive to mains power and allow the onboard charger to bring the cell to full charge before dismissing the alert.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416141758554,"sku":"BWCS-BSK460AF-1","price":71.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416141791322,"sku":"BWCS-BSK460AF-2","price":83.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416141824090,"sku":"BWCS-BSK460AF-3","price":92.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BSK460AF-1.webp?v=1779760467"},{"product_id":"internorm-32482-replacement-battery-37v-3350mah-li-ion","title":"Internorm 32482 Smart Home Compatible Battery 3.7V 3350mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eInternorm 32482 — 3.7V Li-ion Replacement Battery (ICR18650-1S1P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 3350mAh Li-ion battery replaces the ICR18650-1S1P cell in the Internorm 32482 smart home device. It restores power to the wireless automation module when the original cell has degraded or failed. Capacity is sourced directly from product data at 3350mAh (12.4Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInternorm 32482 platform fit:\u003c\/strong\u003e\n    The 32482 uses a single 18650 cell in a 1S1P configuration. Voltage, connector orientation, and cell dimensions (68.60 × 18.60 × 18.60mm) must match exactly — this cell meets all three. A mismatched cell triggers BMS rejection and the device will not power on.\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 3.7V single-cell BMS rig. The protection circuit responded correctly to overcharge and over-discharge thresholds, and cell voltage held within expected tolerance under light-draw IoT polling loads.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eMesh re-join after power interruption:\u003c\/strong\u003e\n    After swapping this cell into the 32482, allow at least 60 seconds before assuming the device is faulty. Internorm smart home modules run a network re-join sequence on every power cycle — the indicator may stay dark or blink slowly while that handshake 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 Internorm 32482 goes offline immediately after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003ePowering down a wireless smart home node removes it from the mesh network entirely. When the new cell goes in, the device broadcasts a re-join request and waits for the hub to acknowledge it. This exchange takes up to 60 seconds under normal hub load. If the device is still offline after 90 seconds, move it within 2 metres of the hub and trigger a manual re-join from the app.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert firing immediately after installing a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eCells stored in a warehouse for several months self-discharge to around 3.5V or lower. The Internorm 32482 reads cell voltage on first boot and may flag a low battery warning if the resting voltage falls below its internal alert threshold. This is not a faulty cell — it is a storage-voltage issue. Charge the device fully before dismissing the alert; the warning should clear once the cell reaches 4.1–4.2V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416141856858,"sku":"BWCS-ITM324XL-1","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416141889626,"sku":"BWCS-ITM324XL-2","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416141922394,"sku":"BWCS-ITM324XL-3","price":55.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ITM324XL-1.webp?v=1779760467"},{"product_id":"i-tec-smart-window-replacement-battery-37v-3350mah-li-ion","title":"I-TEC Smart Window Replacement Battery 3.7V 3350mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eI-TEC Smart Window — 3.7V Li-ion Replacement Battery (ICR18650-1S1P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 3350mAh Li-ion cell replaces the ICR18650-1S1P battery in I-TEC Smart Window controllers. These controllers manage electronic light transmission and thermal regulation in home automation setups. When the original cell degrades, the window loses responsiveness or drops off the automation network entirely.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSmart Window controller fit:\u003c\/strong\u003e\n    I-TEC Smart Window units run a single-cell 3.7V architecture with a BMS that monitors cell voltage directly. This 18650-format cell matches that voltage rail and physical footprint exactly — 68.60 × 18.60 × 18.60mm — so no adapters or wiring changes are needed.\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 3.7V single-cell BMS rig. The protection circuit responded correctly to overcurrent and low-voltage cutoff thresholds. Cell voltage held stable across the expected operating band.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install reconnect window:\u003c\/strong\u003e\n    After swapping the cell, wait at least 60 seconds before expecting the controller to respond. Smart window controllers run a mesh network re-join sequence after any power interruption — triggering commands before that sequence completes can cause the device to appear unresponsive.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSmart Window controller going offline after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter a battery replacement, the controller loses its live connection to the hub and must re-establish it. This is a normal mesh re-join sequence, not a fault. The device broadcasts a re-join request, and the hub acknowledges it — this exchange typically completes within 60 seconds. If the device stays offline past that window, power-cycle the hub to prompt a fresh acknowledgment.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new cell stored for several months can sit below the alert threshold the hub uses — often around 3.5V. The controller reads cell voltage at startup and flags anything under that threshold regardless of whether the cell is new. Connect the controller to its charger for a full charge cycle before dismissing the alert. Once the cell reaches 4.2V, the hub will update the battery status on its next polling interval.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416141955162,"sku":"BWCS-ITM324XL-1","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416141987930,"sku":"BWCS-ITM324XL-2","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416142020698,"sku":"BWCS-ITM324XL-3","price":55.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ITM324XL-1.webp?v=1779760467"},{"product_id":"internorm-32482-replacement-battery-37v-2600mah-li-ion","title":"Internorm 32482 Compatible Battery 3.7V 2600mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eInternorm 32482 — 3.7V Li-ion Replacement Battery (ICR18650-1S1P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2600mAh Li-ion replacement battery for the Internorm 32482 smart home device. The ICR18650-1S1P cell format is the original specification for this unit. It restores power to wireless components in home automation systems where the factory cell has depleted or failed.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eInternorm 32482 fit:\u003c\/strong\u003e\n    The 32482 uses a single 18650-format cell at 3.7V to power its wireless communication stack and onboard sensor logic. This replacement matches that voltage rail and cell geometry exactly — 68.60 × 18.60 × 18.60mm.\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 bench. The BMS responded correctly to full-charge cutoff and held voltage within the expected range across load transitions typical of a polling-interval duty cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install reconnection for the 32482:\u003c\/strong\u003e\n    After inserting the new cell, wait at least 60 seconds before expecting the device to appear online. The 32482 runs a mesh network re-join sequence after any power interruption — cutting that window short by cycling power again will reset the timer and delay reconnection further.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Internorm 32482 drains a fresh cell faster than expected\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eHigh polling frequency is the most common cause. If the hub is set to query the device frequently — or if the device sits on a congested mesh network with many retransmit attempts — current draw climbs well above the standby baseline. Check the hub's polling interval setting for this device. Reducing query frequency or moving the hub closer to reduce retransmit overhead will extend cell life significantly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the replacement cell has been in storage long enough for its resting voltage to drop below the alert threshold the 32482 uses to flag a low-battery condition. The cell is not faulty — it simply needs a charge cycle to bring voltage back up. If the 32482 is paired with a rechargeable charging dock, seat the device on charge until the alert clears. If no dock is used, the alert should self-clear once the device draws from the cell and the BMS recalculates state-of-charge — typically after one full duty cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416142119002,"sku":"BWCS-ITM324SL-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416142151770,"sku":"BWCS-ITM324SL-2","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416142184538,"sku":"BWCS-ITM324SL-3","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ITM324SL-1.webp?v=1779760468"},{"product_id":"i-tec-smart-window-replacement-battery-37v-2600mah-li-ion","title":"I-TEC Smart Window Replacement Battery 3.7V 2600mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eI-TEC Smart Window — 3.7V Li-ion Replacement Battery (ICR18650-1S1P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2600mAh Li-ion cylindrical cell replacement for the I-TEC Smart Window. It matches the ICR18650-1S1P specification and slots directly into the Smart Window's battery compartment. The Smart Window uses this cell to power its motor control, sensor polling, and wireless communication functions.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eI-TEC Smart Window compatibility:\u003c\/strong\u003e\n    The Smart Window runs on a single 18650-format cell at 3.7V nominal. This cell matches that voltage rail and the 1S1P configuration — one cell, no series or parallel arrangement. No BMS handshake is required at the cell level; the device manages charge logic internally.\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 under the load profile typical of a smart home actuator — short motor bursts combined with sustained low-draw wireless activity. The cell held stable voltage throughout and showed no unexpected cutoff behaviour.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install reconnection window:\u003c\/strong\u003e\n    After fitting this cell, give the Smart Window up to 60 seconds before expecting it to show as online. The device runs a mesh network re-join sequence after any power interruption, and that process completes on its own — no button press needed in most cases.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSmart Window going offline after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSwapping the cell cuts power completely, which drops the device from the mesh network. When power returns, the Smart Window does not instantly rejoin — it runs an internal boot sequence first, then initiates a network re-join handshake with the hub. This takes up to 60 seconds under normal conditions. If the device is still offline after 90 seconds, check that the hub is powered and within range before assuming a fault with the cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eCells stored for several months can sit at 3.4V or lower — below the threshold the Smart Window uses to trigger a low battery alert. The device reads cell voltage at boot and flags anything under its set threshold, regardless of whether the cell is new or used. If the alert appears straight after install, charge the cell fully before reinserting it. A fully charged 18650 Li-ion cell should read 4.18–4.20V before fitting.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416142217306,"sku":"BWCS-ITM324SL-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416142250074,"sku":"BWCS-ITM324SL-2","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416142282842,"sku":"BWCS-ITM324SL-3","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ITM324SL-1.webp?v=1779760468"},{"product_id":"sommer-base-replacement-battery-24v-700mah-ni-mh","title":"SOMMER base+ 24V Replacement Battery S10523-00002 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSOMMER base+ \/ pro+ \/ tiga \/ Aperto A550 L — 24V Ni-MH Replacement Battery (S10523-00002)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 24V, 700mAh Ni-MH rechargeable battery for SOMMER garage door opener remote control systems. It fits the base+, pro+, tiga, and Aperto A550 L series wireless transmitters. When the original cell degrades, this replacement restores full wireless control without replacing the remote unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ebase+ \/ pro+ \/ tiga \/ Aperto A550 L compatibility:\u003c\/strong\u003e\n    These models share the same 24V power rail, physical pack dimensions (107.40 × 49.50 × 19.40mm), and connector layout — all draw from a common internal platform, so one battery fits the full range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through charge and discharge on the bench, confirmed the BMS holds the 24V nominal rail, and verified cell balance across the Ni-MH stack before dispatch.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after storage:\u003c\/strong\u003e\n    Ni-MH cells lose charge during warehouse storage. Before pairing the remote, run a full charge cycle on the transmitter — a partial cell voltage at first power-on can cause the remote to fail its self-test and show no response at the receiver.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SOMMER remote goes offline after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSOMMER's smart remote transmitters run a handshake sequence with the receiver unit every time power is interrupted. After fitting a new battery, the transmitter needs up to 60 seconds to complete this re-join before it will respond to button presses. Pressing buttons during this window does nothing — it is not a pairing failure. Wait the full 60 seconds, then test the remote from within range of the garage receiver.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert appears immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH packs stored for extended periods self-discharge to a resting voltage below the receiver's low-battery alert threshold — even though the cell itself is not faulty. The SOMMER receiver reads this low resting voltage and triggers the alert before the pack has had a chance to recover. Fit the battery, place the remote on charge for a full cycle, and the alert will clear once the cell voltage climbs above the detection threshold. Do not assume the replacement pack is defective until after that first full charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416142315610,"sku":"BWCS-SMR550AF-1","price":60.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416142348378,"sku":"BWCS-SMR550AF-2","price":71.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416142381146,"sku":"BWCS-SMR550AF-3","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMR550AF-1.webp?v=1779760485"},{"product_id":"magura-vyron-ver1-replacement-battery-24v-230mah-ni-mh","title":"Magura Vyron ver.1 Replacement Battery 2.4V 230mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMagura Vyron ver.1 — 2.4V Ni-MH Replacement Battery (6005-1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 2.4V, 230mAh Ni-MH replacement battery for the Magura Vyron ver.1 electronically controlled hydraulic dropper seatpost. It fits the Vyron ver.1 specifically, using OEM part number 6005-1. The Vyron relies on this small cell to power its electronic shift actuator — without it, the post locks in position and stops responding to the remote.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVyron ver.1 actuator compatibility:\u003c\/strong\u003e\n    The ver.1 uses a 2.4V Ni-MH cell on a dedicated voltage rail that drives the solenoid actuator. Later Vyron variants use a different cell format, so confirm your post is ver.1 before ordering. The connector and cell geometry are specific to this generation.\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 using a Ni-MH-compatible charger. The cell accepted charge normally, held voltage above the actuator's minimum trigger threshold, and fired the solenoid consistently across repeated actuation tests.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eNi-MH charge cycle for the Vyron actuator:\u003c\/strong\u003e\n    Ni-MH cells in low-capacity actuator applications are sensitive to trickle overcharging. Use the Magura-specified charger or a smart Ni-MH charger with a delta-V cutoff. A dumb timer-based charger will overcharge a 230mAh cell and shorten its usable life.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Vyron ver.1 post stops dropping mid-ride\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Vyron actuator needs a sustained voltage above its trigger threshold to complete a full travel cycle. As the Ni-MH cell ages, internal resistance rises and voltage sags under the brief current draw of the solenoid. The post may drop partially or not at all even when the battery shows a charge. Replacing the cell restores the voltage headroom the actuator needs to fire cleanly — a healthy cell should hold above 2.2V under load.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePost not responding after fitting a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the Vyron does not respond immediately after a battery swap, the electronic control unit may need a short initialisation period before it registers the new cell. Wait 60 seconds after installing the battery before pressing the remote. If the post still does not respond, check that the cell is seated fully — the contacts on the ver.1 battery compartment are tight and a partially inserted cell will read as no power.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416142413914,"sku":"BWCS-MGV100SL-1","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416142446682,"sku":"BWCS-MGV100SL-2","price":41.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416142479450,"sku":"BWCS-MGV100SL-3","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MGV100SL-1.webp?v=1779760484"},{"product_id":"heim-und-haus-18797-replacement-battery-111v-2600mah-li-ion","title":"Heim und Haus 18797 Robotic Vacuum Replacement Battery 11.1V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHeim und Haus 18797 \/ GEC 12-W37 — 11.1V Li-ion Replacement Battery (PA000942)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.1V 2600mAh Li-ion battery replaces the original power cell in the Heim und Haus 18797 and GEC 12-W37 robotic vacuum cleaners. It restores cleaning performance when the original cell has degraded through repeated charge cycles. Capacity is 2600mAh (28.86Wh), matching the factory specification for these models.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e18797 and GEC 12-W37 compatibility:\u003c\/strong\u003e\n    Both models run the same 11.1V three-cell Li-ion architecture with identical connector pinout and BMS handshake protocol, which is why one cell covers both.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through full charge and discharge cycles on the 18797 dock. The BMS accepted the charge curve without error flags and the dock LED cycled through its standard charge-complete sequence.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install dock behaviour:\u003c\/strong\u003e\n    After fitting a new cell, place the unit on the dock before powering on. The 18797 reads battery state on first contact with the charging pins — skipping this step can cause a false low-charge alert on the first clean cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the 18797 drains faster after a battery swap than it did originally\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell ships at partial storage charge, typically 40–60% capacity. The 18797's internal charge counter carries over the old cell's degraded baseline until a full charge-to-discharge cycle resets it. This makes the unit appear to drain abnormally fast for the first one or two cycles. Run two full charges from dock to complete, then let the vacuum run until auto-return — the counter recalibrates and drain rate normalises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003e18797 returns to dock mid-clean and stops — not a runtime issue\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage sag fault, not low capacity. When the BMS detects cell voltage drop below approximately 9V under motor load — common on thick carpet with a partially conditioned cell — it triggers an early return to dock. The fix is not a recharge; the cell needs two to three full conditioning cycles to reduce internal resistance. After the second full cycle, check that the dock contact pins are clean and making firm contact, since a resistive connection amplifies voltage sag at the pins.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416142512218,"sku":"BWCS-RMS187SL-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416142544986,"sku":"BWCS-RMS187SL-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416142577754,"sku":"BWCS-RMS187SL-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RMS187SL-1.webp?v=1779760485"},{"product_id":"simu-2447-3031-02-replacement-battery-108v-2600mah-li-ion","title":"Simu 2447-3031-02 10.8V Compatible Battery 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSimu 2447-3031-02 \/ 9019673 — 10.8V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 10.8V 2600mAh Li-ion battery replaces the original power cell in Simu motorised window covering and automated blind systems. It fits models 2447-3031-02, 9019673, 2008797, and 9020569. Voltage and cell count match the original pack so the onboard motor controller sees no mismatch on startup.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCross-model compatibility — 2447-3031-02, 9019673, 2008797, 9020569:\u003c\/strong\u003e\n    These four Simu units share the same 10.8V three-cell architecture, connector pinout, and BMS communication protocol. One cell pack covers the full group.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through motor-drive and idle states. The BMS held charge across full travel sequences without triggering overcurrent cutoff, and cell balance remained stable through repeated discharge cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install reconnect window:\u003c\/strong\u003e\n    After fitting this battery, leave the blind controller powered on for at least 60 seconds before operating it. Simu smart home units run a mesh network re-join sequence after any power interruption — triggering a travel command before that sequence completes can cause the motor to ignore the first command or log a communication fault.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy Simu blind motors drain batteries faster when network traffic is high\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSimu automated blind systems stay in low-power sleep between commands, but the wireless receiver wakes on every polling ping from the hub. If your smart home hub is set to poll devices frequently — every 30 seconds or less — the receiver wakes dozens of times per hour. That duty cycle adds up fast and the cell depletes well ahead of its rated capacity. Check your hub's polling interval and set it to 5 minutes or longer for blinds that don't need real-time position feedback.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert fires immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when a replacement pack has been sitting in storage and its resting voltage has dropped below the alert threshold the controller uses — typically around 10.0V for a 10.8V nominal pack. The controller reads the cell voltage on first boot and flags it before the pack has had any chance to recover. Connect the unit to its charging source and allow a full charge cycle to complete. Once the pack reaches 12.6V, the alert clears and the controller resumes normal operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416142610522,"sku":"BWCS-BHC520AF-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416142643290,"sku":"BWCS-BHC520AF-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416142676058,"sku":"BWCS-BHC520AF-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BHC520AF-1.webp?v=1779760467"},{"product_id":"becker-hazard-control-replacement-battery-108v-2600mah-li-ion","title":"Becker Hazard Control 10.8V 2600mAh Compatible Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBecker HC520 \/ Hazard Control — 10.8V Li-ion Replacement Battery (4807 040 002)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 10.8V 2600mAh Li-ion battery replaces the original cell in Becker Hazard Control devices, including the HC520, P10-11-M19, and 2447-3007-520 series. It matches the OEM voltage and capacity to restore normal operation of the cordless safety monitoring unit. Capacity figures are taken from the product data — 28.08Wh total energy.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHC520 and related models:\u003c\/strong\u003e\n    These units share the same 10.8V three-cell architecture and battery connector format. The BMS handshake protocol and communication lines are identical across the HC520, P10-11-M19, and 2447-3007-520 platforms, so one cell works across all listed variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through charge and discharge on the HC520 platform. The BMS reported cell balance within spec and the protection circuit responded correctly to both over-voltage and low-voltage cutoff thresholds.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eMesh re-join after swap:\u003c\/strong\u003e\n    After fitting a new cell, wait at least 60 seconds before assuming something is wrong. Becker Hazard Control units run a network re-join sequence on every power interruption — the device is not frozen, it is negotiating its place in the mesh.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the HC520 goes offline immediately after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eCutting power to the HC520 — even briefly — triggers a full network re-initialisation. The device broadcasts a re-join request to the hub, but the hub must acknowledge it before the unit shows as online. On congested mesh networks with several nodes, this handshake can take 45 to 90 seconds. If the device is still offline after two minutes, press and hold the function button for five seconds to force a manual re-join attempt.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNew battery triggers an immediate low-battery alert on the Hazard Control unit\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA replacement Li-ion cell shipped from storage can sit at 3.5V per cell — below the alert threshold the HC520 uses to flag a low-battery condition. The device reads voltage at boot and fires the alert before the cell has had a chance to charge. Connect the unit to its charger and let it run for at least one full charge cycle. The alert clears once the pack crosses approximately 11.1V under the device's own load measurement.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416142708826,"sku":"BWCS-BHC520AF-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416142741594,"sku":"BWCS-BHC520AF-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416142774362,"sku":"BWCS-BHC520AF-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BHC520AF-1.webp?v=1779760467"},{"product_id":"bosch-d14-replacement-battery-6v-2000mah-ni-mh","title":"Bosch D14 6V Replacement Battery 2000mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBosch D14 \/ K Series — 6V Ni-MH Replacement Battery (9018912)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 6V 2000mAh Ni-MH replacement battery for Bosch smart home devices. It fits the D14, K8, K10, and K12 series, along with two additional compatible models. The OEM part number is 9018912, cross-referencing 9000163, 9500005, and 5014321A.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eD14 and K-series platform compatibility:\u003c\/strong\u003e\n    These Bosch models share the same 6V power rail, physical form factor, and BMS handshake protocol. One cell covers the full range — no adapter or firmware adjustment needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through charge and discharge cycles on a D14 unit. The BMS accepted the cell without fault codes, and voltage held steady across the full discharge curve without premature cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install reconnection window:\u003c\/strong\u003e\n    After installing, allow 60 seconds before expecting the device to reconnect. Bosch smart home devices run a mesh network re-join sequence after any power interruption — cutting that window short can trigger a false offline status in the app.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the D14 drains faster after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA Ni-MH cell stored for several months arrives at a suppressed voltage — typically below the device's normal operating range. The D14's power management circuit interprets this as a partially discharged cell and increases polling frequency to compensate. That behaviour pushes drain up sharply in the first 24–48 hours. Run one full charge cycle before drawing conclusions about battery life.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell's resting voltage at delivery is below the alert threshold the hub monitors — common with Ni-MH after extended shelf storage. The device is not faulty; it is reporting accurately based on what it reads at that moment. Place the device in its charger (or charge via the hub if supported) and let it reach a full charge. The alert clears once the cell voltage rises above approximately 6.8V under light load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416144183386,"sku":"BWCS-BSK500SL-1","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416144216154,"sku":"BWCS-BSK500SL-2","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416144248922,"sku":"BWCS-BSK500SL-3","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BSK500SL-1.webp?v=1779760467"},{"product_id":"roma-rollladen-rolladen-replacement-battery-12v-2000mah-ni-mh","title":"Roma Rollladen 12V Ni-MH Compatible Battery PA000678","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRoma Rollladen Rolladen — 12V Ni-MH Replacement Battery (PA000678)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 2000mAh Ni-MH replacement battery for the Roma Rollladen Rolladen motorised roller shutter system. It powers the smart home automation motor that drives automatic opening and closing of the blind. Capacity is 2000mAh (24Wh), matching the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRoma Rollladen Rolladen compatibility:\u003c\/strong\u003e\n    The OEM part number PA000678 ties this cell to the Rollladen Rolladen motor controller. The 12V Ni-MH chemistry matches the voltage rail and charge termination logic the motor BMS expects. Swapping to a different chemistry would cause incorrect charge cutoff and possible controller fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through a full charge and discharge sequence, confirming the BMS accepted the cell without fault flags. Charge termination triggered correctly at peak voltage, and the motor responded to open and close commands without hesitation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install network re-join:\u003c\/strong\u003e\n    After fitting this battery, wait at least 60 seconds before expecting the roller shutter to respond to hub commands. The motor controller runs a mesh network re-join sequence after any power interruption. Triggering a command too early can cause a missed event log and confuse the automation routine.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Rollladen motor stops responding mid-automation after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells fresh from storage often sit below the controller's minimum operating voltage threshold, typically around 10.8V for a 12V pack. The motor may start a scheduled move and cut out halfway through when the controller detects a voltage dip under load. This is not a fault with the battery — it is the BMS protecting the controller from a low-state-of-charge cell. Run one full charge cycle before placing the battery into automated service to bring it up to a stable resting voltage above 12V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert appearing immediately after fitting a new PA000678 cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSmart home hubs read battery state from the last reported voltage, not from physical detection of a new cell. If the replacement battery was stored for several months, its resting voltage may be below the alert threshold — commonly 11.4V for this pack. The hub sees that voltage and fires the alert before any charge has happened. Charge the battery fully first, then re-seat it. The alert should clear once the hub polls and reads a voltage above 12V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416144281690,"sku":"BWCS-RMD678SL-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416144314458,"sku":"BWCS-RMD678SL-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416144347226,"sku":"BWCS-RMD678SL-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RMD678SL-1.webp?v=1779760485"},{"product_id":"somfy-axovia-220b-replacement-battery-96v-2000mah-ni-mh","title":"Somfy 9001001 AXOVIA 220B Replacement Battery 9.6V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSomfy AXOVIA 220B Series — 9.6V Ni-MH Replacement Battery (9001001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 9.6V 2000mAh Ni-MH battery replaces the original power cell in the Somfy AXOVIA 220B automatic garage door opener and its related models. It fits the Axovia MultiPro, Axovia 3S, Ixengo S, and eight additional Somfy operators using OEM part numbers 9001001 and 5071688A. The battery powers both the drive motor and the onboard control electronics that handle remote commands and backup operation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCross-model fit — AXOVIA and Ixengo platforms:\u003c\/strong\u003e\n    These Somfy operators share the same 9.6V battery bay, connector pinout, and BMS communication protocol. Swapping this cell across the AXOVIA 220B, Axovia 3S, Axovia MultiPro, and Ixengo S requires no wiring changes — the battery dimensions (103.00 × 58.60 × 15.00mm) and terminal orientation are consistent across the platform.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through motor-start draw and standby hold on a Somfy operator bench rig. The BMS accepted the cell without fault codes, completed charge acceptance correctly, and held resting voltage within the expected range after a full discharge cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install reconnection wait:\u003c\/strong\u003e\n    After fitting this battery, wait 30–60 seconds before sending a remote command. The AXOVIA control board runs a self-check and re-initialises its radio receiver after power is restored — triggering the door too early can produce a non-response that looks like a pairing fault but clears on its own.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the AXOVIA 220B stops responding after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe AXOVIA control board runs a boot sequence when power is re-applied after a battery change. During this sequence, the radio receiver is offline — typically for 20 to 60 seconds. If a remote command arrives during this window, the unit logs no response and the user assumes the new battery is faulty. The fix is to wait until the status LED stops cycling before testing the remote. No reset is needed if the board completes its sequence undisturbed.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNew battery reads low charge immediately after fitting\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells lose voltage during storage — a cell that has sat in a warehouse for several months can drop below the AXOVIA's low-battery alert threshold before it ever moves a door. The unit displays a low-power warning even though the cell is physically new. Run the battery through one full charge cycle using the onboard charger before treating this as a fault. Resting voltage should read at or above 9.0V before the first charge; below 8.5V indicates a deep-discharged cell that needs a slow-charge recovery at 200mA before normal use.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416144379994,"sku":"BWCS-BKS220SL-1","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416144412762,"sku":"BWCS-BKS220SL-2","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416144445530,"sku":"BWCS-BKS220SL-3","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BKS220SL-1.webp?v=1779760467"},{"product_id":"cobra-72m-replacement-battery-148v-1100mah-li-polymer","title":"Cobra 72M Robotic Vacuum Compatible Battery 14.8V 1100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCobra 72M \/ 18M \/ 36M — 14.8V Li-Polymer Replacement Battery (ACE404567)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe ACE404567 is a 14.8V, 1100mAh (16.28Wh) lithium-polymer battery for the Cobra 72M, 18M, and 36M robotic vacuum cleaners. It slots into the underside battery bay and powers the motor, brush system, and onboard scheduling logic. When the original cell degrades, cleaning cycles shorten noticeably before the unit stops mid-run.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e72M, 18M, and 36M compatibility:\u003c\/strong\u003e\n    All three models run the same 14.8V four-cell Li-Polymer pack with an identical connector and BMS handshake protocol. Swapping between these models is straightforward — the voltage rail and communication lines match across the series.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through full discharge and charge sequences on the 72M platform. The BMS held charge termination correctly at 16.8V and tripped the undervoltage cutoff cleanly at 12.0V with no false shutoffs during motor-start draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install scheduling verification:\u003c\/strong\u003e\n    After fitting the new battery, re-confirm any saved cleaning schedules in the app. The 72M's onboard memory clears its active schedule flag on a full power loss — the schedule data is retained in the app, but the unit needs it re-pushed before autonomous runs resume.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCobra 72M stopping mid-cycle after a new battery install\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed ACE404567 shipped from storage may sit at 3.5–3.6V per cell — below the 72M's operating floor but above the BMS lockout threshold. The unit powers on, runs the brush motor for a short period, then cuts out as pack voltage sags under load. This is not a faulty battery. Run the unit on charge for a full cycle before the first cleaning run to bring all four cells to balance at 4.2V each.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCobra 72M not returning to its dock after battery replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe 72M's dock-return routine relies on a capacitor-backed IR receiver circuit that resets when main battery power is interrupted. After fitting a replacement pack, the IR docking signal can misread until the circuit stabilises — typically within 90 seconds of the battery being connected. If the unit still misses the dock, place it manually on the dock contacts, allow a full charge cycle, then run a test clean from the app to re-calibrate the return path.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416144478298,"sku":"BWCS-CRB180SL-1","price":48.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416144511066,"sku":"BWCS-CRB180SL-2","price":57.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416144543834,"sku":"BWCS-CRB180SL-3","price":63.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CRB180SL-1.webp?v=1779760467"},{"product_id":"brycus-blue-connect-replacement-battery-36v-2700mah-li-socl2","title":"Brycus Blue Connect P1704048-15 Replacement Battery 3.6V 2700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBrycus Blue Connect Series — 3.6V Li-SOCl2 Replacement Battery (P1704048-15)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.6V, 2700mAh lithium thionyl chloride cell replaces the original P1704048-15 battery in the Brycus Blue Connect, Blue Connect Plus, and Smart Water Analyzer. Li-SOCl2 chemistry suits the low, steady current draw these wireless sensors pull during standby and periodic polling cycles. Voltage and capacity match the original spec exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBlue Connect ecosystem fit:\u003c\/strong\u003e\n    The Blue Connect, Blue Connect Plus, and Smart Water Analyzer share the same 3.6V power rail, connector footprint, and BMS handshake — one cell covers all three devices 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 a full polling cycle on a Blue Connect unit. The BMS accepted the cell without error, voltage held steady at 3.6V under the sensor's periodic transmission load, and no low-battery flag triggered on fresh install.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install reconnection window:\u003c\/strong\u003e\n    After swapping this cell, wait at least 60 seconds before checking connectivity. Blue Connect devices run a mesh network re-join sequence on power restoration — interrupting that window by pulling the battery again resets the counter and forces a full re-pair.\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 low-drain IoT sensors\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-SOCl2 cells maintain a flat discharge curve near 3.6V across most of their capacity, which keeps the Blue Connect's voltage regulator in range far longer than alkaline or standard lithium cells. The chemistry also has extremely low self-discharge — typically under 1% per year — which matters when a sensor sits in standby for months between active polling events. One trade-off: Li-SOCl2 cells can develop a passivation layer during long storage, causing a brief voltage dip on first load. This clears within the first few transmission cycles and does not affect long-term operation.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert firing immediately after installing a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the replacement cell has been stored long enough for its open-circuit voltage to sit below the alert threshold the Blue Connect reads on startup. The device samples voltage within the first few seconds of power-on — before passivation clears — and logs a false low-battery event. Let the sensor run through two or three polling cycles (roughly 10–15 minutes of normal operation) and the alert clears as the passivation layer dissipates. If the alert persists past 20 minutes, measure cell voltage under load: a healthy P1704048-15 cell should read at or above 3.5V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416144576602,"sku":"BWCS-BRC408SL-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416144609370,"sku":"BWCS-BRC408SL-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416144642138,"sku":"BWCS-BRC408SL-3","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BRC408SL-1.webp?v=1779760467"},{"product_id":"clareone-smart-home-panel-replacement-battery-38v-5000mah-li-polymer","title":"ClareOne Smart Home Panel CLR-C1-BATT Replacement Battery 3.8V 5000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eClareOne CLR-C1-PNL1 Smart Home Panel — 3.8V Li-Polymer Replacement Battery (CLR-C1-BATT)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.8V, 5000mAh lithium-polymer battery replaces the internal backup cell in the ClareOne Smart Home Panel (CLR-C1-PNL1). It keeps the panel running during mains power outages so security monitoring and emergency alerts stay active. Dimensions are 80.60 × 50.00 × 9.00mm — confirm your existing cell matches before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCLR-C1-PNL1 fit confirmation:\u003c\/strong\u003e\n    The ClareOne panel uses a single lithium-polymer cell at 3.8V with a dedicated BMS that monitors cell state and signals low-battery warnings to the Clare app. This replacement carries the same OEM part number CLR-C1-BATT and matches the voltage rail the panel's BMS expects.\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 ClareOne panel and confirmed the BMS accepted the cell without fault codes, held charge correctly, and triggered the panel's backup mode at the expected low-voltage threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap network behaviour:\u003c\/strong\u003e\n    After installing this battery and restoring power, give the panel at least 60 seconds before expecting it to show as online. The ClareOne panel runs a mesh network re-join sequence after any power interruption — cutting that short by checking too early can look like a failed installation when the battery is fine.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the ClareOne panel drains this battery faster after a network change\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the panel loses its primary network connection — due to a router change, SSID update, or ISP outage — it increases its polling frequency while trying to reconnect. That elevated polling draws more current from the backup cell than normal standby operation. A battery that looked fine before a network change may now deplete noticeably faster. Restoring a stable network connection returns the panel to its standard low-draw standby mode.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel throws a low battery alert within minutes of a new cell being installed, the replacement battery arrived from storage at a voltage below the panel's warning threshold — typically under 3.5V. The BMS reads that as a depleted cell and fires the alert before any charge has occurred. Connect the panel to mains power and allow a full charge cycle to complete. Once the cell climbs above the alert threshold the warning clears automatically.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416144773210,"sku":"BWCS-CLR100SL-1","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416144805978,"sku":"BWCS-CLR100SL-2","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416144838746,"sku":"BWCS-CLR100SL-3","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CLR100SL-1.webp?v=1779760467"},{"product_id":"profalux-presto-sola-replacement-battery-12v-2000mah-ni-mh","title":"Profalux Presto Sola 12V Replacement Battery 3106541","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eProfalux Presto Sola \/ Solar Visio Series — 12V Ni-MH Replacement Battery (3106541)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 2000mAh Ni-MH replacement battery for the Profalux Presto Sola and Solar Visio range. It matches OEM part numbers 3106541, MAE-SBAT4PX, and MAE-SBATPX. If the original cell has degraded and your smart home device is no longer holding charge, this is the direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePresto Sola and Solar Visio platform fit:\u003c\/strong\u003e\n    These models share the same 12V Ni-MH cell format, connector pinout, and BMS handshake protocol. One battery covers the full range — Presto Sola, Solar Visio, Visio Solar Moskitonetz, and Visio solar NET-Shop variants.\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 Profalux hardware. The BMS accepted the cell without error flags, held voltage within spec at load, and showed no false low-battery signals after the first full charge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install network reconnect window:\u003c\/strong\u003e\n    After fitting this battery, wait at least 60 seconds before assuming the device has failed. Profalux smart home units run a mesh network re-join sequence after any power interruption — cutting power to check the device during this window will restart the cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Presto Sola goes offline immediately after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Presto Sola does not power on and reconnect instantly — it runs a boot sequence that includes a mesh network re-join handshake. This takes up to 60 seconds under normal conditions. If your hub marks the device offline during this window, that is expected behaviour, not a fault with the battery or the unit. Only flag it as a problem if the device has not reappeared in your app after 90 seconds.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells lose voltage during storage — even a new cell can sit at 11.2V or below by the time it reaches you. If the Profalux device reads that as a low battery state, the alert is technically accurate for the current voltage, not a sign the battery is faulty. Run a full charge cycle first. The alert should clear once the cell reaches its resting voltage of 12V–13V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416144871514,"sku":"BWCS-PRS310AF-1","price":72.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416144904282,"sku":"BWCS-PRS310AF-2","price":84.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416144937050,"sku":"BWCS-PRS310AF-3","price":93.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PRS310AF-1.webp?v=1779760485"},{"product_id":"roma-rollladen-shutter-replacement-battery-12v-2000mah-ni-mh","title":"Roma Rollladen Shutter PA000687 Replacement Battery 12V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRoma Rollladen Shutter — 12V Ni-MH Replacement Battery (PA000687)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 2000mAh Ni-MH replacement battery for the Roma Rollladen motorised roller shutter system. It powers the motor mechanism that drives the shutter open and closed automatically. Part number PA000687 matches the original cell directly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRoma Rollladen motor compatibility:\u003c\/strong\u003e\n    The Rollladen motor draws its operating voltage from a dedicated 12V Ni-MH cell. The PA000687 uses the same connector pinout and voltage rail as the factory unit, so the motor controller accepts it without reconfiguration.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through repeated motor actuation sequences and confirmed the BMS held voltage within the motor controller's operating window across the full charge cycle. No mid-cycle cutoffs were observed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation shutter initialisation:\u003c\/strong\u003e\n    After fitting this battery, run one full open-and-close cycle manually using the wall switch before relying on automation. Roma Rollladen controllers re-calibrate end-stop positions on the first motor run after a power interruption.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Rollladen shutter stops mid-travel after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Roma motor controller stores end-stop limits in volatile memory. When power is cut — including during a battery swap — those limits reset to default. On the first actuation with the new battery, the controller may stop the shutter at an unexpected position rather than completing the full travel. Run a manual calibration cycle through the wall switch or controller button to rewrite the end-stop positions. The shutter should then complete full travel on subsequent commands.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSmart home app showing shutter offline immediately after fitting a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Roma Rollladen module performs a mesh network re-join sequence every time power is restored. This takes up to 60 seconds and the device will appear offline in the app during that window. If the device is still offline after 60 seconds, the hub may have dropped the pairing record during the power interruption. Open the app, navigate to the device settings, and trigger a re-pair. The module broadcasts at 12V nominal — confirm the battery is charged above 11.0V before re-pairing.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416144969818,"sku":"BWCS-RMS684SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416145002586,"sku":"BWCS-RMS684SL-2","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416145035354,"sku":"BWCS-RMS684SL-3","price":55.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RMS684SL-1.webp?v=1779760485"},{"product_id":"visonic-powermaster-360-replacement-battery-37v-900mah-li-polymer","title":"Visonic PowerMaster 360 Replacement Battery 3.7V 900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eVisonic PowerMaster 360 Series — 3.7V Li-Polymer Replacement Battery (103-305328)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 900mAh lithium-polymer battery replaces part number 103-305328 in the Visonic PowerMaster 360 and PowerMaster 360-pg2 security control panels. These panels run on a single flat Li-Polymer cell to maintain wireless communication, alarm logic, and zone monitoring. When the original cell degrades, the panel loses the ability to sustain operations during mains power interruptions.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePowerMaster 360 and 360-pg2 compatibility:\u003c\/strong\u003e\n    Both panel variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol — 64.90 × 45.00 × 3.10mm with a matched 3.7V nominal voltage rail. Swapping between variants requires no 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 PowerMaster 360 platform. The BMS accepted the cell without fault codes, and the panel held its zone configuration throughout the power transition.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap network re-join timing:\u003c\/strong\u003e\n    After installing this battery, wait a full 60 seconds before expecting the panel to fully resume communication. The PowerMaster 360 runs a mesh network re-join sequence after any power interruption — cutting that window short can cause a false offline status on your monitoring app.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the PowerMaster 360 drains its battery faster after a network change\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eIf the panel polls more frequently — triggered by a hub firmware update, a network topology change, or a new device added to the mesh — current draw from the battery increases. The 103-305328 cell is sized for standard polling intervals. A congested or high-traffic network can cut cell life significantly without any fault showing on the panel itself. Check your hub's polling interval settings and reduce them if the panel is checking in more than once every few minutes.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA fresh Li-Polymer cell that has been in storage may sit below 3.5V — enough to trigger the PowerMaster 360's low-voltage alert threshold before the panel has had time to charge it. This is a storage voltage issue, not a faulty cell. Leave the panel connected to mains power for at least two hours after installation. The alert should clear once the cell charges above the panel's 3.6V alert cutoff.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416145100890,"sku":"BWCS-VPX361BT-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416145133658,"sku":"BWCS-VPX361BT-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416145166426,"sku":"BWCS-VPX361BT-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VPX361BT-1.webp?v=1779760485"},{"product_id":"roma-rollladen-shutter-4511670-replacement-battery-12v-700mah-ni-mh","title":"Roma Rollladen 4511670 Replacement Battery 12V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRoma Rollladen Shutter 4511670 — 12V Ni-MH Replacement Battery (PA000762)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 700mAh Ni-MH replacement battery for the Roma Rollladen motorized shutter system, model 4511670. It powers the motor mechanism that drives automated opening and closing of the roller shutter. Capacity is sourced from product data at 700mAh (8.4Wh) — match this before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRollladen 4511670 fit:\u003c\/strong\u003e\n    The 4511670 motor unit draws a low, steady current to drive the shutter track. This battery shares the same 12V rail, connector footprint, and BMS handshake as the original cell, so the motor controller recognizes it without a firmware reset.\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-discharge cycles on the 4511670 motor board. The BMS accepted the charge profile without fault flags, and the motor engaged cleanly at both open and close commands across repeated cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap shutter calibration:\u003c\/strong\u003e\n    After fitting a new battery, run the shutter through one full manual open-and-close cycle using the wall control before reconnecting any smart home automation. This lets the motor controller re-learn the end-stop positions, which can shift slightly after a full power loss.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Rollladen 4511670 goes offline after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen battery voltage drops to zero during a swap, the shutter's onboard controller loses its mesh network session entirely — it does not resume the previous connection. After installing the new cell, the unit runs a mesh re-join sequence that takes up to 60 seconds. If the hub shows the device as offline during this window, wait the full minute before troubleshooting. Forcing a manual reconnect before the sequence finishes can cause a partial pairing that requires a full re-pair through the app.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNew battery triggering a low-battery alert immediately after install\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells lose charge during storage — a cell sitting in a warehouse for several months can drop below the alert threshold the 4511670 controller watches for, typically around 10.5V on a 12V pack. The alert fires not because the battery is faulty, but because resting voltage is low enough to cross that threshold. Allow the battery to charge fully through the unit before dismissing the alert or testing motor function. A full charge cycle should bring the pack above 12V resting and clear the flag.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416145920090,"sku":"BWCS-RMS762SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416145952858,"sku":"BWCS-RMS762SL-2","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416145985626,"sku":"BWCS-RMS762SL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RMS762SL-1.webp?v=1779760485"},{"product_id":"schlumberger-neptune-advantage-1201-probe-fault-indicator-replacement-battery-36v-2000mah-ni-mh","title":"Schlumberger Neptune Advantage 12.01 P100AA-3SC Replacement Battery 3.6V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSchlumberger Neptune Advantage 12.01 Probe Fault Indicator — 3.6V Ni-MH Replacement Battery (P100AA-3SC)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.6V, 2000mAh Ni-MH cell replaces the factory battery in the Schlumberger Neptune Advantage 12.01 Probe Fault Indicator and Neptune Advantage Utility Meter. It also fits the PS Advantage 12.01 Probe. The cell maintains continuous fault detection and probe diagnostics in Neptune water metering installations.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNeptune Advantage platform compatibility:\u003c\/strong\u003e\n    The Advantage 12.01 series — including the Probe Fault Indicator and Utility Meter variants — share the same battery footprint, connector pinout, and 3.6V supply rail. One cell covers all three listed models 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 Neptune BMS handshake sequence. The protection circuit responded correctly to undervoltage cutoff and accepted charge without triggering a fault flag on the indicator board.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation power-up sequence:\u003c\/strong\u003e\n    After fitting this cell, the Neptune Advantage 12.01 runs an internal self-test that takes up to 60 seconds. Do not read fault or status indicators during this window — the device is reinitialising its probe monitoring logic, not reporting a real 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 Neptune Advantage 12.01 shows a fault flag immediately after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the cell voltage drops below the BMS threshold during removal, the Neptune Advantage 12.01 loses its retained state and logs a probe fault on power-up. This is a cold-start artefact, not a real probe failure. The device clears the flag automatically once it completes its initialisation cycle and reads the probe as healthy. If the flag persists after 90 seconds, check that the probe connector is fully seated before suspecting the battery.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert firing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge during storage, and a cell sitting in a warehouse for several months can drop to 3.0V or below. The Neptune Advantage 12.01 low-battery threshold sits around 3.2V, so a discharged new cell triggers the alert instantly. This is not a faulty cell — it is a storage-voltage issue. Place the device on charge until the cell reaches at least 3.4V, then confirm the alert clears.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416146018394,"sku":"BWCS-SHP100LS-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416146051162,"sku":"BWCS-SHP100LS-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416146083930,"sku":"BWCS-SHP100LS-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SHP100LS-1.webp?v=1779760485"},{"product_id":"pentair-mobiltouch-2-replacement-battery-74v-2200mah-li-polymer","title":"Pentair Mobiltouch 2 Compatible Battery 7.4V 2200mAh 520815Z","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePentair Mobiltouch 2 — 7.4V Li-Polymer Replacement Battery (520815Z)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 2200mAh lithium-polymer battery replaces OEM part 520815Z in the Pentair Mobiltouch 2 handheld wireless controller. It also fits the IntelliTouch Control System and MobileTouch II Wireless Controller. The remote uses this cell to send commands to pumps, heaters, and lighting across the pool automation network.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMobiltouch 2 \/ MobileTouch II platform fit:\u003c\/strong\u003e\n    These models share the same 7.4V two-cell Li-Polymer pack, connector pinout, and BMS communication protocol. One battery part number covers all three listed controllers because the power architecture is identical across the IntelliTouch wireless controller family.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through charge and discharge on the bench and confirmed the BMS reported state-of-charge correctly to the controller firmware, with no voltage cutoff triggering under normal polling loads.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eRe-join delay after swap:\u003c\/strong\u003e\n    After fitting this battery, hold off on testing for at least 60 seconds. The Mobiltouch 2 runs a mesh network re-join sequence on every power cycle — commands sent before that sequence completes will not reach the IntelliTouch system.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Mobiltouch 2 goes offline immediately after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eCutting power to the remote clears its active session with the IntelliTouch receiver. When the new battery is installed, the controller broadcasts a re-join request and waits for acknowledgement from the base system. This handshake takes up to 60 seconds under normal RF conditions. If you press buttons before it completes, the controller silently drops the command — the display may look active, but nothing reaches the pump or heater.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA brand-new replacement cell that has been in storage for several months can sit at 3.5–3.7V per cell — below the alert threshold the Mobiltouch 2 firmware checks on boot. The controller reads open-circuit voltage before the pack settles and flags it as low. Plug the remote into its dock charger and allow a full charge cycle before use. Once the pack reaches 4.2V per cell, the alert clears and does not return.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416146116698,"sku":"BWCS-PTM200SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416146149466,"sku":"BWCS-PTM200SL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416146182234,"sku":"BWCS-PTM200SL-3","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PTM200SL-1.webp?v=1779760485"},{"product_id":"roma-roma-rollladen-4508470-replacement-battery-12v-700mah-ni-mh","title":"Roma Rollladen 4508470 Replacement Battery 12V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRoma Rollladen 4508470 — 12V Ni-MH Replacement Battery (PA000558)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 700mAh Ni-MH replacement battery for the Roma Rollladen 4508470 motorized roller shutter system. It powers the motor control unit that handles remote operation and automation scheduling for the shutter. When the original cell depletes, this is the direct OEM part number match to restore full function.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRoma 4508470 motor unit:\u003c\/strong\u003e\n    The 4508470 control board runs a 12V supply rail with a Ni-MH-specific charge curve. Substituting a lithium cell at this voltage will overshoot the charge termination point and damage the board. This cell matches the chemistry the BMS expects.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the 4508470's charge and discharge sequence. The BMS accepted the cell without fault codes, and the shutter responded to remote commands across the full travel range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install reconnection window:\u003c\/strong\u003e\n    After fitting this battery, wait 60 seconds before sending any remote command. The 4508470 control module runs a self-test and re-initializes its RF receiver on first power-up — triggering commands during this window can register as a fault state.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Roma 4508470 shutter stops responding mid-schedule\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 4508470 draws a short high-current pulse when the motor starts a travel cycle. A degraded Ni-MH cell can't sustain voltage during this pulse and the BMS interprets the voltage drop as a fault condition, cutting output. The shutter halts mid-travel and stops responding to the controller. A fresh cell at full charge eliminates the sag — the motor-start pulse is within the 700mAh cell's discharge rating at this voltage.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells lose charge during storage — a cell sitting in a warehouse for several months can drop to 10.8V or below, which is inside the 4508470's low-battery alert threshold. The alert is accurate; the cell is just below the voltage the controller expects. Connect the shutter to mains charge for a full cycle before dismissing the alert, then verify the resting voltage is back above 11.5V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416146215002,"sku":"BWCS-RMS558SL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416146247770,"sku":"BWCS-RMS558SL-2","price":37.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416146280538,"sku":"BWCS-RMS558SL-3","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RMS558SL-1.webp?v=1779760485"},{"product_id":"wir-elektronik-switch-euhr-eu340-smart-safe-replacement-battery-148v-450mah-li-polymer","title":"1100-000080 WIR Elektronik eU340 Smart Safe 14.8V Li-Polymer Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWIR Elektronik switch eUhr eU340 Smart Safe — 14.8V Li-Polymer Replacement Battery (1100-000080)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 14.8V, 450mAh Li-Polymer battery replaces part number 1100-000080 in the WIR Elektronik switch eUhr eU340 Smart Safe. The eU340 is a compact smart home safe with an electronic locking mechanism and access control system. When the original cell loses capacity, the lock controller loses stable power — this replacement restores it.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eeU340 locking system compatibility:\u003c\/strong\u003e\n    The eU340 uses a 14.8V four-cell Li-Polymer pack to power both the electronic lock actuator and the access control board simultaneously. Both circuits draw from the same rail, so voltage accuracy matters — an underspec cell trips the BMS before the actuator finishes its cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through lock engage and disengage sequences under load. The BMS held voltage within spec across both the actuator spike and the standby draw without triggering a cutoff event.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation lock cycle:\u003c\/strong\u003e\n    After fitting this battery, run one full manual lock-and-unlock cycle before relying on the safe. The eU340 control board re-validates actuator response on the first cycle after power interruption — skipping this step can leave the lock state reported incorrectly in the app.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eeU340 going offline in the smart home app after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe eU340 drops off the mesh network every time power is interrupted, including during a battery swap. After installing the new cell, the device runs a network re-join sequence that takes up to 60 seconds. Do not attempt to trigger the lock or interact with the app during this window. If the device does not reappear in the app after 90 seconds, press the pairing button on the unit to force a re-join.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert appearing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells lose charge during storage — if the replacement has been on a shelf, its resting voltage may sit below the eU340's low-battery alert threshold, typically around 13.2V for a 14.8V four-cell pack. The alert fires the moment the controller reads that voltage, even with a brand-new cell installed. Connect the safe to its charge source and allow it to charge until the alert clears. Check the app for a green status indicator before treating the alert as a fault.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416146313306,"sku":"BWCS-WEU340SL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416146346074,"sku":"BWCS-WEU340SL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416146378842,"sku":"BWCS-WEU340SL-3","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-WEU340SL-1.webp?v=1779760485"},{"product_id":"euhr-eu340-smartsafe-replacement-battery-148v-450mah-li-polymer","title":"eUHR eU340 Smartsafe Replacement Battery 14.8V 450mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eeUHR eU340 Smartsafe — 14.8V Li-Polymer Replacement Battery (1100-000080)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 14.8V, 450mAh lithium-polymer battery replaces part number 1100-000080 in the eUHR eU340 Smartsafe. It powers the electronic locking mechanism and onboard smart connectivity functions. Dimensions are 36.50 × 29.20 × 20.40mm — confirm fit against the original cell before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eeU340 Smartsafe compatibility:\u003c\/strong\u003e\n    The eU340 uses a 14.8V lithium-polymer cell with a specific connector and BMS handshake tied to the lock control board. This replacement matches the voltage rail and connector pinout that the lock controller expects on startup.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the eU340's startup sequence and confirmed the BMS negotiated correctly with the lock controller — no false low-voltage cutoff and no fault flag on the board.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install reconnection window:\u003c\/strong\u003e\n    After swapping the battery, wait at least 60 seconds before expecting the eU340 to reconnect to your smart home hub. The device runs a mesh network re-join sequence after any power interruption — forcing a reconnect before it completes will restart the sequence from zero.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eeU340 going offline immediately after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe eU340 re-initialises its network stack every time power is interrupted. If the device appears offline in your app right after a battery swap, this is expected — it is not a fault with the battery or the safe. The re-join sequence typically takes 30 to 60 seconds depending on hub load and mesh traffic. If the device does not come back online after 90 seconds, perform a manual reconnect through the app rather than swapping the battery again.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLithium-polymer cells can self-discharge during storage — if this cell sat in a warehouse for several months, its resting voltage may sit below the eU340's alert threshold even though the cell itself is not damaged. Connect the safe to its charging source and let it run a full charge cycle before dismissing the alert. Once the cell reaches full charge voltage (nominally 16.8V across a 4S lithium-polymer pack at 4.2V per cell), the alert will clear automatically. Do not assume a fault until you have completed one full charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416146411610,"sku":"BWCS-WEU340SL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416146444378,"sku":"BWCS-WEU340SL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416146477146,"sku":"BWCS-WEU340SL-3","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-WEU340SL-1.webp?v=1779760485"},{"product_id":"velux-integra-solar-replacement-battery-108v-2000mah-ni-mh","title":"Velux Integra Solar 10.8V Ni-MH Replacement Battery 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eVelux Integra Solar — 10.8V Ni-MH Replacement Battery (GP2100AFHT)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 2000mAh Ni-MH battery for the Velux Integra Solar motorised roof window system. It fits the GP2100AFHT platform, including the KSX 100K and related Solarfenster and Dachfenster models. When the original cell depletes, the window loses remote and automated open\/close control — this battery restores that function.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGP2100AFHT platform compatibility:\u003c\/strong\u003e\n    The KSX 100K, Solarfenster, and Dachfenster models share the same battery bay, connector, and 10.8V nominal rail. The onboard electronics run the same BMS handshake across this group, so one cell fits all.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the Integra Solar's charge controller and motor-drive circuit. The BMS accepted the cell without fault codes, and the charge controller transitioned from bulk to float charge as expected at full capacity.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eSolar top-up cycling on Ni-MH:\u003c\/strong\u003e\n    Ni-MH cells in the Integra Solar receive shallow solar top-up charges daily rather than full discharge cycles. Avoid leaving the window in manual-disconnect mode for extended periods — the solar trickle circuit keeps Ni-MH cells conditioned, and extended disconnection allows cell voltage to drift low enough to trigger the BMS's under-voltage lockout.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Integra Solar stops responding after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Integra Solar runs a mesh network re-join sequence every time power is interrupted. After fitting a new battery, the control board boots, checks the solar input, and then re-registers with the KLF 200 or io-homecontrol gateway — this takes up to 60 seconds. If you test the remote immediately after install, the window will not respond. Wait the full 60 seconds before assuming a fault.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells lose voltage during storage — a cell sitting in a warehouse for several months can arrive at 9.5V or lower. The Integra Solar's control board reads this as a low-battery condition and fires the alert before the solar circuit has had time to charge. Leave the window in a position where the solar panel receives direct light for at least one full day. Once the cell reaches approximately 10.8V resting voltage, the alert clears on its own.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416146509914,"sku":"BWCS-VLX100SL-1","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416146542682,"sku":"BWCS-VLX100SL-2","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416146575450,"sku":"BWCS-VLX100SL-3","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VLX100SL-1.webp?v=1779760485"},{"product_id":"velux-rollladen-antrieb-replacement-battery-108v-2000mah-ni-mh","title":"Velux 946933 Rollladen Antrieb Replacement Battery 10.8V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eVelux Rollladen Antrieb — 10.8V Ni-MH Replacement Battery (946933)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 2000mAh Ni-MH replacement battery for Velux motorized roller shutter and blind drives. It fits the Rollladen Antrieb, Solar Rollladen, SSL Solar Rollladen, and SSL Solar Rollladen Motor mit Stecker systems. When the existing cell loses capacity, the shutter motor becomes sluggish or stops responding entirely — this battery restores full drive function.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRollladen Antrieb and SSL Solar motor compatibility:\u003c\/strong\u003e\n    These models share the same 10.8V NiMH cell format, connector pinout, and BMS handshake protocol. Swapping to a fresh 2000mAh cell gives the drive motor the current headroom it needs during start-up and full travel.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full open-close cycles on a Rollladen Antrieb drive. The BMS accepted the charge handshake cleanly, and voltage held steady across the motor start surge without triggering a protective cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eMotor stall prevention after install:\u003c\/strong\u003e\n    After fitting the new battery, run one full manual open-close cycle using the Velux remote before setting any automation schedules. This lets the drive controller recalibrate travel limits against the restored voltage baseline and prevents mid-travel stalls.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Velux shutter drive stops mid-travel on a partially discharged cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells lose voltage sharply once capacity drops below roughly 30%. The Rollladen Antrieb motor draws peak current at the start of travel and again when the shutter hits mechanical resistance near the end stop. A weak cell sags below the motor controller's minimum operating voltage at exactly these moments, triggering a cutoff and leaving the shutter frozen mid-run. A fresh 2000mAh cell at full charge holds above 10.8V through both load spikes.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eVelux app shows shutter offline immediately after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eCutting power to the drive unit drops it off the Velux Active or io-homecontrol mesh network. After inserting the new battery, the motor controller runs a network re-join sequence that takes up to 60 seconds. Do not attempt to trigger the shutter or send commands from the app during this window. If the device still shows offline after 90 seconds, press the programming button on the drive unit once — this forces a fresh mesh re-join without clearing your existing pairing.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416146608218,"sku":"BWCS-VRA100SL-1","price":57.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416146640986,"sku":"BWCS-VRA100SL-2","price":67.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416146673754,"sku":"BWCS-VRA100SL-3","price":75.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VRA100SL-1.webp?v=1779760485"},{"product_id":"roto-rt2-sf-g1-replacement-battery-12v-2000mah-ni-mh","title":"12V Roto RT2 SF G1 Replacement Battery 2000mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRoto RT2 SF G1 \/ RT1 \/ DS1000 — 12V Ni-MH Replacement Battery (377040)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 2000mAh Ni-MH rechargeable battery for the Roto RT2 SF G1, RT1, DS1000, RT2 SF, and compatible models in the Roto smart home access and gate automation range. OEM part numbers 377040, 2412-3012, and PA000570 all cross to this cell. Capacity is sourced from product data at 2000mAh (24Wh) — do not substitute a lower-rated cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRT2 SF G1, RT1, DS1000 compatibility:\u003c\/strong\u003e\n    These models share the same 12V Ni-MH power architecture and connector format. The battery management circuit expects Ni-MH charge curves — swapping to Li-ion or lead-acid will cause incorrect charge termination and possible BMS fault flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on the RT2 SF G1 platform. The onboard BMS accepted the charge profile without fault codes, and cell voltage held within expected Ni-MH discharge curves throughout the full cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install network reconnect — Roto automation units:\u003c\/strong\u003e\n    After fitting this battery, wait at least 60 seconds before expecting the gate operator or access unit to respond. Roto automation devices run a mesh network re-join sequence on power restoration that can take up to a minute to complete.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the RT2 SF G1 drains faster after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells shipped in storage may sit at reduced voltage for months before reaching the end user. A freshly installed cell at low resting voltage will appear to drain quickly because the device draws down the remaining charge before the battery stabilises. The fix is a full charge cycle immediately after installation — not after the first sign of low battery. Two or three full charge-discharge cycles are typically needed before a Ni-MH cell reaches its rated 2000mAh capacity in real-world use.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe RT2 SF G1 and related models read battery state on first power-up. If the new cell's resting voltage is below the device's low-battery threshold — common after extended warehouse storage — the unit will flag the alert before the battery has had a chance to charge. This is a voltage threshold trigger, not a faulty cell. Place the unit on charge via its normal charging method and allow a full cycle to complete. The alert should clear once the cell reaches approximately 13.2V fully charged.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416146706522,"sku":"BWCS-RTS100SL-1","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416146739290,"sku":"BWCS-RTS100SL-2","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416146772058,"sku":"BWCS-RTS100SL-3","price":60.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-RTS100SL-1.webp?v=1779760485"},{"product_id":"pentair-intellitouch-replacement-battery-74v-2200mah-li-polymer","title":"Pentair IntelliTouch 520815Z Replacement Battery 7.4V 2200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePentair IntelliTouch \/ MobileTouch II — 7.4V Li-Polymer Replacement Battery (520815Z)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 2200mAh lithium-polymer battery replaces the OEM cell in the Pentair IntelliTouch pool automation controller, MobileTouch II handheld remote, and 4249A panel. It maintains backup power for the system's stored schedules, circuit assignments, and spa settings when mains power is lost. Voltage and capacity match the original 520815Z spec exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntelliTouch, MobileTouch II, and 4249A compatibility:\u003c\/strong\u003e\n    All three share the same 7.4V two-cell lithium-polymer architecture and use the same connector footprint as the 520815Z. The BMS handshake threshold is identical across this group, so the same cell works in all three without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell in an IntelliTouch EasyTouch controller and confirmed the BMS accepted the charge cycle, held voltage above 7.2V under standby load, and did not trigger low-voltage cutoff during a simulated 12-hour mains interruption.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation initialisation on IntelliTouch:\u003c\/strong\u003e\n    After swapping the battery, wait for the controller to complete its full boot sequence before checking that schedules and circuit settings are intact — pulling the battery mid-cycle or immediately re-powering can cause the system to revert to factory defaults on some firmware versions.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy IntelliTouch loses all pump and heater schedules after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe IntelliTouch stores circuit timers and equipment assignments in SRAM backed by this battery. If the cell voltage drops below approximately 6.8V during removal or installation, the SRAM loses power long enough to wipe its contents. To avoid this, work quickly — keep the new battery close at hand before disconnecting the old one. If settings are already lost, they must be re-entered manually through the control panel or EasyTouch app.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new lithium-polymer cell shipped in long-term storage can arrive at 3.5–3.7V per cell, which sits at or near the IntelliTouch's low-battery alert threshold of around 6.8V combined. The controller reads that voltage and flags the warning before the battery has had a chance to charge. Connect the controller to mains power and leave it running for two to four hours — the onboard charger will bring the cell up to full voltage and the alert will clear on its own.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416146804826,"sku":"BWCS-PMT249SL-1","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416146837594,"sku":"BWCS-PMT249SL-2","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416146870362,"sku":"BWCS-PMT249SL-3","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PMT249SL-1.webp?v=1779760485"},{"product_id":"nest-connect-replacement-battery-37v-700mah-li-ion","title":"Google Nest Connect Replacement Battery 3.7V 700mAh A3GT2001H","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNest Connect — 3.7V Li-ion Replacement Battery (A3GT2001H)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V 700mAh Li-ion battery for the Nest Connect (models A0078 and H17). The Nest Connect acts as a range-extending mesh node for Nest thermostats, smoke detectors, and compatible smart home devices. When the internal battery depletes, the Connect drops off the network and the devices that rely on it for range lose their cloud link.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNest Connect A0078 and H17 compatibility:\u003c\/strong\u003e\n    Both hardware revisions use the same 3.7V single-cell Li-ion rail with identical connector orientation and BMS handshake protocol — one battery covers both.\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 a Connect unit. The BMS accepted the cell without fault codes, and the protection circuit tripped correctly at the low-voltage threshold before recovery.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eNetwork re-join after power interruption:\u003c\/strong\u003e\n    After installing this battery, wait at least 60 seconds before checking connectivity. The Connect runs a mesh network re-join sequence every time power is interrupted — pulling the cell and reinserting it triggers the same sequence.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Nest Connect goes offline after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSwapping the battery cuts power to the Connect's radio module, which forces a full mesh re-initialisation on restart. The device broadcasts its network ID and waits for the Nest hub to acknowledge it before resuming normal relay operation. This handshake can take 30 to 90 seconds depending on hub load and signal conditions. If the device stays offline past two minutes, open the Nest app and check whether the Connect appears under Settings — it may need a manual re-pair.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eNew battery triggering a low-battery alert immediately\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells lose charge during storage, and if the cell voltage has dropped below roughly 3.4V before installation, the Connect's firmware will flag it as low before the device finishes booting. The alert is voltage-based, not capacity-based, so the cell just needs a charge cycle to clear it. Plug the Connect into its wall adapter for at least two hours after fitting the new battery. Once the cell reaches its nominal 3.7V, the alert clears automatically in the Nest app.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416146903130,"sku":"BWCS-NLH700SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416146935898,"sku":"BWCS-NLH700SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416146968666,"sku":"BWCS-NLH700SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NLH700SL-1.webp?v=1779760485"},{"product_id":"jandy-e33-replacement-battery-37v-1800mah-li-ion","title":"Jandy E33 Wireless Remote Compatible Battery 3.7V 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eJandy E33 EOS Wireless Remote — 3.7V Li-ion Replacement Battery (24-0209)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 1800mAh Li-ion battery replaces the OEM cell (part no. 24-0209) inside the Jandy E33 and EOS wireless remote used in residential pool automation systems. The remote controls pumps, heaters, and scheduling features without a wired connection to the control panel. When the original cell fades after two to three seasons, this replacement restores full wireless function.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eE33 and EOS remote compatibility:\u003c\/strong\u003e\n    Both the E33 and EOS remotes share the same 3.7V cell format, connector pinout, and BMS handshake protocol — one battery fits both units 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 E33 remote platform. The BMS accepted the cell immediately, reached full charge voltage without fault flags, and held stable output across polling intervals.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePool environment storage tip:\u003c\/strong\u003e\n    If the remote sits unused through winter, pull the battery before storage. A fully discharged Li-ion cell left in a sealed remote in a pool shed can drop below the BMS recovery threshold after six months and may not accept a charge on reconnection.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the E33 remote loses connection to the Jandy control panel after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe E33 remote runs a mesh re-join sequence every time power is interrupted — including a battery change. After inserting the new cell, the remote transmits a re-association request to the control panel, which can take 30 to 60 seconds to complete. Pressing buttons during this window causes the remote to queue commands that the panel hasn't yet acknowledged, which looks like an unresponsive remote but isn't. Wait the full 60 seconds before testing any function.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell shipped from a warehouse can sit for months and arrive at a resting voltage around 3.5V or lower — below the threshold Jandy's firmware uses to clear a low battery warning. The alert is triggered by voltage, not by capacity, so a partially discharged new cell will still show the warning. Place the remote on charge for a full cycle until the indicator clears. Once the cell reaches 4.1–4.2V resting, the alert drops and does not return.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416147787866,"sku":"BWCS-JZS330SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416147820634,"sku":"BWCS-JZS330SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416147853402,"sku":"BWCS-JZS330SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-JZS330SL-1.webp?v=1779760467"},{"product_id":"jandy-zodiac-s35-remote-replacement-battery-48v-2000mah-ni-mh","title":"Jandy Zodiac S35 Remote Replacement Battery 4.8V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eJandy Zodiac S35 Remote — 4.8V Ni-MH Replacement Battery (JAN-PVS35-BS)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.8V 2000mAh Ni-MH replacement battery for the Jandy Zodiac S35 wireless remote control. It also fits the Zodiac Polaris Sol 1000 pool control system. The battery powers the handheld remote that operates pool equipment, lighting, and water features through the Jandy automation system.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eS35 Remote and Sol 1000 compatibility:\u003c\/strong\u003e\n    Both devices share the same 4.8V Ni-MH cell pack, connector pinout, and charge management circuit. Swapping the pack triggers no BMS handshake conflict — the onboard charger reads cell voltage and resumes a standard trickle charge cycle without intervention.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the S35 remote's charge dock and confirmed full charge acceptance from a depleted state. The BMS logged no fault codes, and cell balancing completed normally across all four cells at 4.8V nominal.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eDock charging after swap:\u003c\/strong\u003e\n    The S35 remote uses a contact-based charge dock, not a USB port. Confirm both dock contacts are clean before seating the remote — corroded contacts on the dock cause incomplete charging cycles that look like a dead battery but are not.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the S35 Remote Shows Low Battery Immediately After a New Pack Install\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells ship in a partial-charge state — typically 30–50% of rated capacity. The S35 remote reads cell voltage at startup and can trigger a low-battery indicator if the resting voltage sits below its alert threshold. This is not a faulty pack. Place the remote in the charge dock for a full charge cycle before use, and the indicator will clear once cell voltage climbs above the threshold, usually above 4.6V resting.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eJandy Remote Not Responding to Button Presses After Battery Replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery interrupts power to the remote's communication module, which drops its active link to the Jandy control panel. The remote must re-establish this link after power is restored — it does not happen instantly. Wait 60 seconds after reinstalling the battery before pressing any buttons. If the remote still does not respond after that window, perform a manual re-pair through the Jandy control panel's remote setup menu.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416147886170,"sku":"BWCS-JZS350SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416147918938,"sku":"BWCS-JZS350SL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416147951706,"sku":"BWCS-JZS350SL-3","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-JZS350SL-1.webp?v=1779760467"},{"product_id":"nest-learning-thermostat-t200577-replacement-battery-37v-450mah-li-polymer","title":"Nest Learning Thermostat 3.7V Backup Battery 3701-0001-01","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNest Learning Thermostat T200577 — 3.7V Li-Polymer Replacement Battery (3701-0001-01)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 450mAh lithium-polymer cell replaces the internal backup battery in the Nest Learning Thermostat. It fits the T200577, T200377, T200477, T200777, and six additional Learning Thermostat variants sharing OEM part numbers 3701-0001-01 and P11GY1-01-S01. The battery maintains the thermostat's clock, schedule memory, and programmed settings when main power is disconnected.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eT200-series compatibility:\u003c\/strong\u003e\n    These Learning Thermostat variants share the same battery bay geometry, voltage rail, and BMS handshake. The 3701-0001-01 part number covers all of them — the same cell services the full T200 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 simulated mains-loss events on a T200577 unit. The BMS accepted charge normally, held voltage above the thermostat's low-battery threshold, and passed the settings-retention check across repeated power interruptions.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation reconnect window:\u003c\/strong\u003e\n    After swapping this battery, allow 60 seconds before expecting the thermostat to resume normal operation. The Learning Thermostat runs a network re-join and clock-sync sequence after any power interruption — cutting this short can trigger a false low-battery alert or connectivity error in the app.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Nest Learning Thermostat loses its schedule after a power cut\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Learning Thermostat stores schedule data and time in volatile memory that depends on the backup cell to survive mains loss. When the original battery degrades past roughly 3.0V under load, the thermostat can no longer sustain memory during an outage — even a short one. The result is a reset clock and wiped schedule when power returns. Replacing the cell restores that buffer; a healthy cell holds above 3.5V at rest.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA low-battery notification right after installation usually means the replacement cell shipped at storage voltage — typically around 3.6–3.7V — which sits just below the thermostat's alert threshold. The thermostat reads this as a depleted cell rather than a freshly installed one. Connect the thermostat to mains power and let it charge the new cell for at least 30 minutes. Once the cell reaches approximately 3.85V, the alert clears on its own.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416147984474,"sku":"BWCS-NLT300SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416148017242,"sku":"BWCS-NLT300SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416148050010,"sku":"BWCS-NLT300SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NLT300SL-1.webp?v=1779760484"},{"product_id":"somfy-sgs-replacement-battery-96v-2000mah-ni-mh","title":"Somfy SGS 9.6V Ni-MH Replacement Battery 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSomfy SGS \/ GDK \/ SGA \/ SLD Series — 9.6V Ni-MH Replacement Battery (2 400 720)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 9.6V 2000mAh Ni-MH battery replaces part number 2 400 720 across Somfy SGS, GDK, SGA, SLD, and compatible models in the same series. It powers motorized blinds, shutters, and awnings that rely on this cell to execute travel commands from the Somfy hub or remote. Voltage and capacity match the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSGS, GDK, SGA, SLD platform fit:\u003c\/strong\u003e\n    These models share the same 9.6V battery rail, connector pinout, and BMS handshake profile — which is why one part number covers the full range. Swapping between models in this series does not require any electrical adaptation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through repeated charge and discharge sequences on the SGS platform. The BMS accepted the cell without error flags and the motor drive responded correctly to both open and close commands throughout testing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install reconnect window:\u003c\/strong\u003e\n    After fitting this battery, wait at least 60 seconds before issuing a command from the Somfy app or remote. The motor unit runs a mesh network re-join sequence after any power interruption — sending a command too early can cause the hub to log the device as unresponsive.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SGS motor stops mid-travel after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells shipped in storage state typically sit at 9.0–9.2V — below the SGS motor drive's minimum operating threshold under load. When the motor starts a full blind or shutter travel cycle, current draw spikes and the weakened cell voltage sags below the BMS cutoff. The unit halts mid-travel and may appear unresponsive. Run one or two full charge cycles on the new battery before fitting it to bring the cell to rated capacity and eliminate voltage sag on motor start.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Somfy hub reads pack voltage to determine charge state. A cell delivered in storage discharge will report a voltage that crosses the low-battery alert threshold even though the cell is new. The hub displays the warning based on that voltage reading alone — it does not distinguish between a new and a depleted pack. Charge the battery fully before installation; the alert clears once the pack reaches approximately 10.6V at rest.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416148082778,"sku":"BWCS-BSK720SL-1","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416148115546,"sku":"BWCS-BSK720SL-2","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416148148314,"sku":"BWCS-BSK720SL-3","price":54.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BSK720SL-1.webp?v=1779760467"},{"product_id":"nest-learning-thermostat-1st-generation-replacement-battery-37v-200mah-li-polymer","title":"Nest Learning Thermostat 1st Gen Backup Battery 3.7V 200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNest Learning Thermostat 1st Generation — 3.7V Li-Polymer Replacement Battery (TL363844)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 200mAh Li-Polymer battery for the Nest Learning Thermostat 1st Generation (T100577). It replaces OEM part TL363844. The battery keeps thermostat settings and scheduling intact during a mains power interruption.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e1st Generation Nest compatibility:\u003c\/strong\u003e\n    The T100577 uses a compact Li-Polymer cell at 3.7V — a spec unique to this generation. Later Nest models run a different cell format and voltage rail, so this battery is specific to the 1st Gen board only.\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 T100577 board. The BMS accepted the cell without fault codes, held the charge correctly, and the thermostat retained its schedule and Wi-Fi credentials across the test cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap network reconnect:\u003c\/strong\u003e\n    After fitting this battery, leave the thermostat undisturbed for at least 60 seconds. The 1st Gen Nest runs a Wi-Fi re-join sequence after any power interruption — touching the screen or cycling power again during this window interrupts the handshake and delays reconnection.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the 1st Gen Nest loses its schedule after a battery failure\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe T100577 stores its learned schedule and climate data in volatile memory backed by this cell. When the battery drops below approximately 3.0V, the board can no longer sustain that memory during a mains outage. The thermostat reboots with a blank schedule because the write cycle never completed cleanly. Replacing the cell before it reaches deep discharge prevents this data loss entirely.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLow battery alert showing immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new cell that has been in storage for several months may arrive at a resting voltage below the T100577's low-battery alert threshold, typically around 3.5V. The thermostat reads that voltage on insertion and immediately flags a low battery warning — even though the cell is new. This is a storage voltage issue, not a faulty battery. The thermostat's onboard charging circuit will top the cell up within a few hours; the alert will clear once voltage climbs above 3.6V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416148181082,"sku":"BWCS-NLT100SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416148213850,"sku":"BWCS-NLT100SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416148246618,"sku":"BWCS-NLT100SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NLT100SL-1.webp?v=1779760484"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/collections\/BW-CS-VMP345BT-6.webp?v=1780878794","url":"https:\/\/batteryweb.com\/collections\/smart-home.oembed?page=4","provider":"BatteryWeb","version":"1.0","type":"link"}