{"title":"Cordless Phone","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe cordless phone has been a household and office staple for decades, and for good reason — the freedom to move around during a call without being anchored to a base unit is something that never really gets old, whether you're pacing through a long business call, cooking dinner while catching up with family, or managing a busy front desk in an office environment. But all of that freedom runs on a battery, and a cordless phone battery that won't hold a charge long enough to get through a single conversation is worse than useless — it turns a convenience into a constant frustration that interrupts calls, cuts conversations short, and forces you back to the base unit anyway, which defeats the entire point of going cordless in the first place. Cordless phone batteries are among the most overlooked replacements in the home and office, quietly degrading over months and years until the standby time and talk time drop so far that the handset barely functions away from its cradle.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003ePanasonic, VTech, AT\u0026amp;T, Uniden, Motorola, GE — every major cordless phone brand relies on a rechargeable battery pack to power the handset through hours of talk time and days of standby, and each platform has specific NiMH or NiCad battery requirements that determine how long the phone stays off the base between charges and how reliably it performs through the full range of daily use. Multi handset systems used in larger homes and busy office environments multiply that dependency across every handset in the setup, meaning a degraded battery in any one of them creates gaps in coverage and reliability across the whole system. A quality replacement battery matched to your specific handset model restores the talk time and standby performance the phone was designed to deliver, brings charging cycles back to normal, and eliminates the frustration of a handset that dies before you're done with your call.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eWe carry cordless phone batteries across the complete range of home and business handset brands and models — NiMH and NiCad replacement packs for single handset setups, multi handset DECT 6.0 systems, and the office cordless platforms used in professional environments where reliable phone communication is part of daily operations. Whether your cordless phone battery drains too fast to get through a normal call, won't hold a charge between uses, takes forever to charge back up, or has reached the point where the handset needs to sit on the base constantly just to stay alive, finding the right replacement here is straightforward and specific to your exact handset model and brand. Browse by manufacturer or battery part number, get the right pack installed, and bring your cordless phone back to the talk time, standby performance, and call quality it delivered when the battery was fresh — because a good cordless phone with a bad battery is just a corded phone with extra steps.\u003c\/p\u003e","products":[{"product_id":"spectralink-s35-dect-handset-replacement-battery-37v-1200mah-li-ion","title":"SpectraLink S35 DECT Cordless Phone Compatible Battery 3.7V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSpectraLink S35 \/ S37 DECT Handset — 3.7V Li-ion Replacement Battery (84743432)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1200mAh lithium-ion battery replaces OEM part 84743432 in the SpectraLink S35 and S37 DECT handsets. It fits both variants of the S35 platform that share the same battery bay and connector. Voltage and capacity match the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eS35 and S37 platform fit:\u003c\/strong\u003e\n    Both models run the same 3.7V Li-ion cell format with identical connector orientation and BMS pin-out. One replacement battery covers the full S35 series handset range without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on an S35 handset. The BMS accepted the pack without fault codes, voltage held steady under DECT RF transmit load, and the base station reported a normal charge state throughout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on the S35 base station:\u003c\/strong\u003e\n    After fitting this battery, seat the handset in its charging cradle for a full uninterrupted charge before taking it off the base. Li-ion cells shipped in storage state need a complete first cycle to let the BMS calibrate the state-of-charge register accurately.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than the original battery after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell ships partially charged and the BMS state-of-charge estimate is uncalibrated out of the box. The first two or three full charge-discharge cycles let the BMS learn the actual cell capacity and report it correctly. Until those cycles are complete, the handset may cut to low-battery warning earlier than expected. Run three full cycles — charge to full, use until the handset signals low battery, repeat — before judging capacity.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSpectraLink S35 handset loses DECT pairing after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery cuts all power to the handset, which clears the volatile memory holding the DECT pairing data on some S35 firmware versions. The fix is to re-register the handset with the base station using the standard SpectraLink pairing procedure. On most S35 systems, this means holding the handset's registration button while the base is in pairing mode. Check the base station admin panel to confirm the handset slot shows as registered before returning the unit to service.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43306864410714,"sku":"BWCS-SPS350CL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43306864443482,"sku":"BWCS-SPS350CL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43306864476250,"sku":"BWCS-SPS350CL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SPS350CL_1.webp?v=1777768792"},{"product_id":"linkvil-fanvil-w610w-replacement-battery-38v-1200mah-li-polymer","title":"Linkvil BA30 Fanvil W610W Compatible Battery 3.8V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLinkvil Fanvil W610W \/ W611W — 3.8V Li-Polymer Replacement Battery (BA30)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 1200mAh Li-Polymer battery for the Fanvil W610W and W611W portable Wi-Fi IP phone handsets. It replaces OEM part numbers BA30 and YJ563170. If your handset no longer holds charge through a normal workday, this is the direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eW610W and W611W compatibility:\u003c\/strong\u003e\n    Both models use the same battery bay dimensions, connector pinout, and BMS handshake protocol. The 3.8V nominal cell voltage matches the charging circuit in both handset variants, so the base station charges this pack without modification.\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 W610W platform. The BMS responded correctly to the base station's charge current, hit full cutoff voltage without error, and reported state-of-charge accurately on the handset display.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on the W610W base:\u003c\/strong\u003e\n    Li-Polymer cells arrive partially charged from storage. Seat the handset in the base immediately after installation and leave it for a full uninterrupted charge before the first call. The W610W base uses a trickle-to-fast charge ramp — interrupting this early extends the time to reach rated capacity.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than expected after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells coming out of storage self-discharge to a partial state. The first one or two cycles will not deliver full rated capacity until the cell has been fully charged and discharged. The W610W's battery gauge can also misread capacity on a fresh cell until it completes a calibration cycle. Run two or three full charge-to-discharge cycles and gauge accuracy will stabilise.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset loses DECT pairing after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery cuts all power to the W610W's volatile memory, which stores the DECT pairing key. When the new battery goes in, the handset boots without a registered base. To re-pair, hold the handset registration button on the base station, then navigate to the handset menu under Settings → Register. The handset should find the base within 60 seconds and restore normal operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339864473690,"sku":"BWCS-LVF611CL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339864506458,"sku":"BWCS-LVF611CL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339864539226,"sku":"BWCS-LVF611CL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVF611CL_1.webp?v=1778366873"},{"product_id":"alcatel-lucent-3mg08009aa-replacement-battery-37v-320mah-li-polymer","title":"Alcatel-Lucent 3MG08009AA Cordless Phone Replacement Battery 3.7V 320mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAlcatel-Lucent 3MG08009AA \/ Wide Band 4.1 Bluetooth — 3.7V Li-Polymer Replacement Battery (GSP04253501A)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 320mAh Li-Polymer battery replaces the GSP04253501A in the Alcatel-Lucent 3MG08009AA and Wide Band 4.1 Bluetooth cordless handsets. At 37.00 x 25.00 x 4.60mm, it fits the original battery compartment without modification. Capacity matches the OEM spec at 320mAh (1.18Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e3MG08009AA and Wide Band 4.1 platform:\u003c\/strong\u003e\n    Both handsets share the same 3.7V single-cell Li-Polymer rail, connector pinout, and BMS handshake — one battery covers both. The BMS monitors cell voltage directly; no firmware pairing is required between battery and base station.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran charge and discharge cycles on this cell and confirmed BMS cutoff at the correct low-voltage threshold. The protection circuit tripped cleanly at the expected floor, with no false overcharge flags during the charge phase.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle charging on Li-Polymer cordless handsets:\u003c\/strong\u003e\n    After installing this battery, seat the handset in the base and allow a full uninterrupted charge before first use. Li-Polymer cells in low-current cordless chargers can take longer than NiMH equivalents to reach rated capacity on the first cycle — pulling the handset early shortens that first charge.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than original battery after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-Polymer cell ships partially discharged for transport safety — typically at 40–60% state of charge. If you use the handset before completing a full charge cycle, available capacity is lower than rated. The BMS also needs one or two full charge-discharge cycles to calibrate its voltage-to-capacity curve accurately. Run two complete cycles — full charge, use until the handset signals low battery, full charge again — before judging talk time.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset not pairing or re-registering after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome DECT handsets lose their base station registration when power is fully removed during a battery change. The handset stores pairing data in volatile memory on certain Alcatel-Lucent models, and a cold swap clears it. Re-registration is done from the handset menu under Settings → Register Handset, or by holding the Find\/Page button on the base for five seconds until the base enters pairing mode. Check your handset manual for the exact sequence — the process takes under two minutes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339864571994,"sku":"BWCS-ALM080CL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339864604762,"sku":"BWCS-ALM080CL-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339864637530,"sku":"BWCS-ALM080CL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ALM080CL-1.webp?v=1778366843"},{"product_id":"ascom-51-advanced-replacement-battery-37v-700mah-li-ion","title":"Ascom 51 Advanced Cordless Phone Compatible Battery 3.7V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAscom 51 Advanced \/ A51 \/ A71 — 3.7V Li-ion Replacement Battery (660089\/1B)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 700mAh Li-ion battery replaces the original power cell in the Ascom 51 Advanced, A51, A71, and AMIE-AABAB cordless DECT handsets. It matches the original voltage and physical footprint, so the handset seats and charges in the base as normal. Capacity is rated at 700mAh (2.59Wh) — identical to the factory specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAscom DECT handset family:\u003c\/strong\u003e\n    The 51 Advanced, A51, and A71 share the same battery bay dimensions and 3.7V Li-ion voltage rail. The connector orientation and BMS handshake protocol are common across this platform, so one cell fits the full model range listed.\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 Ascom base station. The BMS accepted charge without fault and held voltage within the expected range across multiple cycles. No thermal events or cutoff triggers were recorded.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Li-ion cells in DECT handsets are shipped in a partial-charge state for transport safety. After fitting, place the handset in the base and run a full, uninterrupted charge before first use — the Ascom base needs to complete a full charge cycle to calibrate its charge termination correctly with the new cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than expected after fitting the new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells can underperform on the first one to three cycles if they were stored at a low state of charge before shipping. The electrochemical capacity stabilises after a few full charge and discharge cycles through normal use. If talk time is noticeably short after the first cycle, run the handset down to the low-battery indicator, then place it back in the base for a complete charge. After two to three full cycles, capacity should settle at the rated 700mAh.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset not pairing with base after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery cuts all power to the handset, which can erase the stored DECT pairing on some Ascom models. The base and handset need to re-register to each other before calls work again. To re-pair, hold the registration button on the base unit until the LED flashes, then follow the handset menu to search for and register to the base. Once paired, the handset should show signal bars at 3.7V cell voltage under idle standby.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339864670298,"sku":"BWCS-ASM510CL-1","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339864703066,"sku":"BWCS-ASM510CL-2","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339864735834,"sku":"BWCS-ASM510CL-3","price":60.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ASM510CL-1.webp?v=1778366843"},{"product_id":"jetfon-x500-replacement-battery-37v-1200mah-li-polymer","title":"Jetfon X500 Cordless Phone Compatible Battery 3.7V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eJetfon X500 — 3.7V Li-Polymer Replacement Battery (LB-X500)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1200mAh Li-Polymer battery for the Jetfon X500 cordless phone handset. It replaces part number LB-X500 when the original pack loses capacity or stops holding a charge. The battery slots into the handset and powers wireless communication with the base station.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eJetfon X500 fitment:\u003c\/strong\u003e\n    The X500 handset runs a 3.7V Li-Polymer cell with a specific connector and BMS negotiation tied to that voltage rail. This replacement matches the OEM cell dimensions (55.90 × 35.70 × 5.70mm) and voltage, so the handset electronics recognise the pack without fault codes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the LB-X500 replacement through charge and discharge cycles on the bench. The BMS held cutoff cleanly at the correct thresholds — no overcharge bypass and no premature low-voltage trip during extended standby draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on a Li-Polymer handset:\u003c\/strong\u003e\n    Unlike NiMH packs, this Li-Polymer cell does not need a long conditioning charge. Place the handset in the base until the charge indicator clears — typically a full charge cycle. Do not interrupt that first charge by lifting the handset mid-cycle, as the X500 base station calibrates its charge termination signal from that initial session.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than the original battery after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-Polymer cell sometimes reads lower capacity on the first two or three cycles because the electrolyte layers haven't fully activated. The X500 handset draws a consistent RF load during calls, which can expose this early-cycle shortfall. Run two or three full charge-to-depletion cycles through normal use and the pack will reach its rated 1200mAh. If capacity is still short after five cycles, check the base station contacts for corrosion — poor contact raises internal resistance and limits charge acceptance.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset not pairing with base station after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery from a DECT handset cuts all power, and some DECT implementations store pairing data in volatile memory that resets during a full power loss. If the X500 handset shows no link or flashes a registration error after the swap, the fix is a manual re-pair rather than a battery fault. Hold the page or find button on the base station until the handset enters registration mode, then follow the X500 pairing sequence. Once paired, the handset retains the registration as long as the battery stays installed.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339864768602,"sku":"BWCS-JFX500CL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339864801370,"sku":"BWCS-JFX500CL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339864834138,"sku":"BWCS-JFX500CL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-JFX500CL-1.webp?v=1778366844"},{"product_id":"alcatel-lucent-ale-160-wb-replacement-battery-37v-350mah-li-polymer","title":"Alcatel-Lucent ALE-160 WB Compatible Battery 3.7V 350mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAlcatel-Lucent ALE-160 WB \/ ALE-161 WB — 3.7V Li-Polymer Replacement Battery (3ML37161AA)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 350mAh Li-Polymer battery replaces the original cell in the Alcatel-Lucent ALE-160 WB and ALE-161 WB DECT cordless handsets. It matches OEM part numbers 3ML37161AA and EN13300. Physical dimensions are 32.00 × 13.50 × 12.60mm — verify these against your existing cell before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eALE-160 WB and ALE-161 WB compatibility:\u003c\/strong\u003e\n    Both handsets share the same battery bay dimensions, connector pinout, and 3.7V Li-Polymer chemistry, so one cell covers both 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 charge and discharge on the ALE-160 WB platform. The protection circuit held cutoff at the correct low-voltage threshold and accepted charge current from the base station without triggering a fault state.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Li-Polymer cordless handsets:\u003c\/strong\u003e\n    Place the handset in the base immediately after fitting the new cell and leave it undisturbed for a full charge cycle before making any calls. Li-Polymer cells shipped in storage state need one uninterrupted charge to calibrate the handset's fuel gauge accurately.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than original battery after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-Polymer cell often delivers less talk time than expected for the first two or three cycles. This happens because the handset's charge controller reads the stored cell as partially depleted and terminates charge early. Run two to three complete charge-then-use cycles and the controller recalibrates to the full 350mAh capacity. If talk time is still short after four cycles, check that the base station contacts are clean and making solid contact with the handset.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset loses DECT pairing when battery is swapped\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ALE-160 WB stores its base station pairing in volatile memory backed by the battery. When the cell drops below approximately 3.0V during removal, that memory clears and the handset comes back as an unregistered device. Re-register the handset at the base using the registration button — the process takes under two minutes and restores full call functionality.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339864866906,"sku":"BWCS-ALE160CL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339864899674,"sku":"BWCS-ALE160CL-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339864932442,"sku":"BWCS-ALE160CL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ALE160CL-1.webp?v=1778366843"},{"product_id":"aei-vx-8x08-replacement-battery-37v-1100mah-li-ion","title":"AEi VX-8x08 Replacement Battery 3.7V 1100mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAEi VX-8x08 \/ AGR-8206 Series — 3.7V Li-ion Replacement Battery (8206)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V 1100mAh Li-ion battery for the AEi VX-8x08, AGR-8106, AGR-8206, and MIP-300 cordless handsets. It replaces OEM part numbers 8206 and 8106. The cell dimensions are 53.00 × 33.90 × 5.50mm — confirm those against your existing battery before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVX-8x08 and AGR series compatibility:\u003c\/strong\u003e\n    These handsets share the same battery bay geometry, connector polarity, and 3.7V Li-ion cell specification across the VX-8x08, AGR-8106, AGR-8206, and MIP-300 platforms. One battery SKU covers all of them because the BMS handshake requirements and charge termination voltage are identical.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a cordless phone test rig and confirmed the BMS holds charge termination at 4.2V without triggering the base station's fault indicator. The protection circuit activates correctly at low-voltage cutoff before the handset powers off.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Place the handset in the base cradle immediately after installing this battery and leave it for a full uninterrupted charge cycle. Li-ion cells shipped in a partially discharged state — letting the base complete one full charge before first use brings the cell to its rated 1100mAh baseline.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than expected after swapping the battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell often delivers noticeably less talk time for the first two or three charge cycles. This happens because the cell ships at a storage charge level — typically around 40–50% — and the electrodes haven't yet settled into full charge-acceptance. After three complete charge and discharge cycles on the base, capacity stabilises at the rated 1100mAh. If talk time is still short after five cycles, check the handset's standby current draw — some AEi models have a backlight or alert setting that keeps the radio active longer than normal.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station shows no charge light or error after installing the new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen a Li-ion cell arrives below approximately 3.0V from extended storage, some base stations refuse to begin charging — the charge controller sees the voltage as a fault condition rather than a depleted cell. Remove the handset, wait 30 seconds, and reseat it firmly so the contacts align. If the charge light still doesn't appear, check the base contacts for oxidation and clean them with a dry cloth. The base should begin trickle charging once the cell is above 3.0V — a short boost from a compatible Li-ion charger at 0.1A for 10 minutes is enough to cross that threshold.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339865030746,"sku":"BWCS-AER810CL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339865063514,"sku":"BWCS-AER810CL-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339865096282,"sku":"BWCS-AER810CL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AER810CL-1.webp?v=1778366843"},{"product_id":"grandstream-wp822-replacement-battery-37v-1800mah-li-polymer","title":"Grandstream WP822 Compatible Battery 3.7V 1800mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGrandstream WP822 \/ WP825 — 3.7V Li-Polymer Replacement Battery (GS-02)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1800mAh Li-Polymer replacement battery for the Grandstream WP822 and WP825 cordless handsets. It replaces OEM part number GS-02 and fits the battery bay on both models without modification. Capacity is 1800mAh (6.66Wh), matching the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWP822 and WP825 compatibility:\u003c\/strong\u003e\n    Both handsets share the same battery footprint, connector pinout, and BMS communication protocol — a single cell covers both. The Li-Polymer chemistry matches the voltage curve the handset firmware expects during charge and discharge cycles.\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 WP825 handset. The BMS accepted charge from the base station without fault, cell temperature stayed within normal range, and the protection circuit tripped correctly at low-voltage cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle charging on the WP822\/WP825:\u003c\/strong\u003e\n    After installing this battery, seat the handset in the base station and leave it there for a full charge before making calls. Li-Polymer cells shipped from storage may read a low state of charge, and the handset's charge indicator can show full before the cell actually reaches capacity on the first fill.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than expected after fitting the GS-02 replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells arrive from storage partially discharged, and the first one or two charge cycles rarely deliver full rated capacity. The handset's fuel gauge also recalibrates over the first few full cycles — early readings can look low even when the cell is healthy. Run two to three full charge and discharge cycles before drawing conclusions about capacity. By cycle three, the cell should be delivering close to its 1800mAh rating.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset loses DECT pairing after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery from a WP822 or WP825 cuts all power to the handset, which can clear the DECT pairing stored in volatile memory on some firmware versions. This is not a battery fault — it is a power-loss event. To restore pairing, put the handset into registration mode and re-register it to the base station through the handset menu under Settings → Pairing. The process takes under two minutes and the battery does not need to be at full charge for it to complete.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339865129050,"sku":"BWCS-GWP825CL-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339865161818,"sku":"BWCS-GWP825CL-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339865194586,"sku":"BWCS-GWP825CL-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GWP825CL-1.webp?v=1778366844"},{"product_id":"spectralink-s33-replacement-battery-37v-1200mah-li-ion","title":"SpectraLink S33 DECT Replacement Battery 3.7V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSpectraLink S33 DECT Handset — 3.7V Li-ion Replacement Battery (84743430)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1200mAh lithium-ion battery replaces the original pack in the SpectraLink S33 and S33 DECT handset. It fits the cordless DECT handset directly, restoring power to the unit when the original cell has degraded after repeated charge cycles. OEM part numbers 84743430 and BT229865 both apply to this handset.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eS33 and S33 DECT handset fit:\u003c\/strong\u003e\n    Both model variants share the same battery bay dimensions and connector pinout — 53.20 × 34.00 × 5.50mm — so one cell covers the full S33 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 charge and discharge on a DECT handset platform. The BMS held the 3.7V nominal rail steady and tripped protection only at the low-voltage floor — no premature cutoff under RF transmit load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst installation charging tip:\u003c\/strong\u003e\n    Seat the handset in the base for a full charge before first use. Li-ion cells shipped in partial-charge storage state may register low on the handset's fuel gauge until one full charge cycle completes.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than rated after installing the new battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed Li-ion cell coming out of storage is rarely at full calibration with the handset's fuel gauge circuit. The handset reads state-of-charge based on voltage curves, and a cell that hasn't completed a full cycle yet will report capacity low. Run one full charge from the base, then use the handset until it powers off from low battery. Recharge fully — after that cycle, the gauge reading stabilises against the actual cell capacity.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station shows no charge or error light after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome SpectraLink base units check incoming voltage before enabling the charge circuit. A cell shipped at storage voltage — typically 3.5V or below — can fall under the base's acceptance threshold, causing the charge LED to stay dark or show a fault. Place the handset in the base and leave it undisturbed for 15–20 minutes. The base trickle-charges the cell up to the threshold, then switches to normal charge mode. If the light still won't change, confirm the handset contacts are clean and fully seated.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339865227354,"sku":"BWCS-SPS330CL-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339865260122,"sku":"BWCS-SPS330CL-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339865292890,"sku":"BWCS-SPS330CL-3","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SPS330CL-1.webp?v=1778366873"},{"product_id":"v-tech-tion-vcs702-wireless-mic-replacement-battery-24v-300mah-ni-mh","title":"V Tech BT283642 Cordless Phone Wireless Mic Compatible Battery 2.4V 300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eV Tech VCS702 Wireless Mic — 2.4V Ni-MH Replacement Battery (BT283642)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 2.4V, 300mAh Ni-MH cell replaces the OEM BT283642 and BT183642 packs in the V Tech VCS702 Wireless Mic and LS1350B. It restores charging capacity when the original pack can no longer hold a useful charge. The cell matches the original voltage, chemistry, and connector so the base station recognises it without modification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVCS702 and LS1350B compatibility:\u003c\/strong\u003e\n    Both devices share the same 2.4V two-cell NiMH architecture, the same BT283642 connector pinout, and the same base-station charge circuit. One cell fits both without any adapter or wiring change.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the VCS702 base charge circuit. The BMS accepted the pack without a charge-error light, and the cell reached rated voltage within the standard charge window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for NiMH cordless mic packs:\u003c\/strong\u003e\n    After installing, seat the VCS702 handset in the base for a full 16 hours before first use. NiMH cells shipped from storage are partially discharged — a slow first charge is required to reach the 300mAh rated capacity.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing a charging error after fitting a new NiMH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eV Tech base stations check incoming cell voltage before committing to a charge cycle. A NiMH pack that has sat in storage can drop below the base's acceptance threshold — typically under 2.0V — triggering a fault light instead of a charge indicator. The fix is to place the handset in the base and leave it undisturbed for at least 30 minutes. Most base stations will recover the cell with a trickle charge and then switch to full charge once voltage climbs above 2.1V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than expected after the first few uses\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNiMH cells do not deliver rated capacity on the first one or two cycles — this is normal, not a fault. Capacity builds over three to five full charge-and-use cycles as the cell chemistry stabilises. Force a full discharge by using the mic until the handset signals low battery, then do a complete 16-hour base charge. By cycle five, the cell should be delivering close to its rated 300mAh.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339866636378,"sku":"BWCS-VTC702SL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339866669146,"sku":"BWCS-VTC702SL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339866701914,"sku":"BWCS-VTC702SL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VTC702SL-1.webp?v=1778366873"},{"product_id":"snom-c620-wireless-mic-replacement-battery-24v-300mah-ni-mh","title":"Snom C620 Wireless Mic Replacement Battery 2.4V 300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSnom C620 Wireless Mic — 2.4V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 2.4V, 300mAh Ni-MH replacement battery for the Snom C620 Wireless Microphone. It restores cordless operation to a microphone that has stopped holding charge or shows significantly reduced use time. Physical dimensions are 30.50 × 20.50 × 10.60mm — measure your existing cell before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eC620 Wireless Mic fit:\u003c\/strong\u003e\n    The C620 runs a 2.4V two-cell Ni-MH pack at low current draw. This cell matches that voltage rail and physical footprint, so the internal contacts seat correctly without modification.\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. The cell accepted charge at the expected rate and the voltage curve tracked within normal Ni-MH tolerances across multiple cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Ni-MH microphone packs:\u003c\/strong\u003e\n    Place the microphone on charge for a full 16 hours before first use. Ni-MH cells shipped in storage-discharge state will not reach rated capacity on a short initial charge — the first slow charge sets the baseline for all subsequent cycles.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy talk time stays short for the first few uses after fitting a new Ni-MH cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eFresh Ni-MH cells leave the factory in a partially discharged state and need three to five full charge-discharge cycles before they reach rated capacity. On the first cycle, the cell may deliver noticeably less charge than the 300mAh specification. Each subsequent full cycle conditions the cell further. By cycle four or five, capacity stabilises at or near rated output.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMicrophone not pairing with the base unit after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery completely cuts power to the microphone's DECT module, which can clear the stored pairing data on some units. The fix is to re-run the pairing procedure from the base station menu rather than waiting for an automatic reconnect. On the Snom C620, initiate pairing from the base while the microphone is powered on. Check the base station shows the unit as registered before testing audio.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339866767450,"sku":"BWCS-VTC702SL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339866800218,"sku":"BWCS-VTC702SL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339866832986,"sku":"BWCS-VTC702SL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VTC702SL-1.webp?v=1778366873"},{"product_id":"panasonic-kx-td7690-replacement-battery-37v-650mah-li-polymer","title":"Panasonic KX-TD7690 Replacement Battery 3.7V 650mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePanasonic KX-TD7690 — 3.7V Li-Polymer Replacement Battery (N4HUGLB00001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 650mAh Li-Polymer battery replaces the original pack in the Panasonic KX-TD7690 DECT cordless phone handset. It fits the KX-TD7690 directly and matches the OEM connector and form factor. Capacity is 650mAh (2.41Wh), identical to the factory specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eKX-TD7690 handset fit:\u003c\/strong\u003e\n    The KX-TD7690 uses a slim Li-Polymer cell at 3.7V nominal. This pack shares the same voltage rail, physical dimensions (51.40 × 21.90 × 5.90mm), and connector orientation as the original, so the handset BMS accepts it without renegotiation.\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 KX-TD7690 handset. The BMS accepted the pack immediately, charge current ramped normally from the base station, and the handset reached full charge indication without error flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Li-Polymer cordless packs:\u003c\/strong\u003e\n    After fitting, seat the handset in the base and leave it on charge for a full 16 hours before first use. Li-Polymer cells shipped in storage state need a complete slow charge to calibrate the fuel gauge and reach rated capacity from cycle one.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than original battery after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed Li-Polymer pack often delivers less talk time than expected for the first two to three cycles. The cell ships partially discharged and the handset's fuel gauge hasn't yet calibrated to the new pack's actual capacity. Run two or three full charge-to-depletion cycles through normal use and the reported and actual capacity will align. After cycle three, talk time should match the 650mAh rating.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset not pairing with base after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery on some DECT handsets clears the pairing register stored in volatile memory. The KX-TD7690 may show \"searching\" or refuse to connect after a battery swap. To re-pair, hold the handset's registration button until the base unit confirms pairing — the exact sequence is in the KX-TD7690 system guide under \"Handset Registration.\" Once re-paired and fully charged, the handset operates normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339868733530,"sku":"BWCS-PTD769CL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339868766298,"sku":"BWCS-PTD769CL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339868799066,"sku":"BWCS-PTD769CL-3","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PTD769CL-1.webp?v=1778366872"},{"product_id":"sanik-replacement-battery-36v-700mah-ni-mh","title":"Sanik 3SNAAA55HSJ1 Cordless Phone Replacement Battery 3.6V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSanik 3SNAAA55HSJ1 — 3.6V Ni-MH Replacement Battery for Cordless Phones\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH battery pack sourced to the Sanik 3SNAAA55HSJ1 specification. It fits cordless DECT phone handsets that use this OEM part number or its cross-reference equivalents. When the original pack stops holding a charge, this unit restores full handset operation without replacing the phone.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOEM cross-reference coverage:\u003c\/strong\u003e\n    This pack covers four part numbers — 3SNAAA55HSJ1, 3SNAAA60HSJ1, 3SN-AAA75H-S-J1F, and 3SN54AAA80HSJ1 — because these share the same cell format, connector pinout, and 3.6V voltage rail. The handset's charge circuit treats them identically.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through the base station charge cycle and confirmed the BMS accepted the charge without triggering an error state. Cell voltage at full charge measured within the expected Ni-MH plateau for this pack size.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Ni-MH handsets:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full 16 hours before first use. Ni-MH cells in cordless phones need a slow initial charge to reach rated capacity — skipping this shortens talk time from the first cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than the original battery after replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells ship in a partially discharged state and need three to five full charge-discharge cycles before reaching rated capacity. On the first cycle, talk time will be noticeably lower than expected — this is not a fault. Each subsequent full charge cycle builds capacity incrementally. By cycle four or five, the pack should deliver output consistent with the 700mAh rating.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing a charging error or no-charge light after swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA Ni-MH pack that has sat in storage can drop below the voltage threshold the base station uses to confirm a battery is present. When cell voltage falls too low, the base reads the pack as absent or faulty and withholds charge current. The fix is to briefly trigger a charge using a compatible external AA Ni-MH charger — bring the pack up to around 3.0V — then seat it back in the base. The base station should then accept it and begin a normal charge cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339870175322,"sku":"BWCS-CPB8011-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339870208090,"sku":"BWCS-CPB8011-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339870240858,"sku":"BWCS-CPB8011-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CPB8011-1.webp?v=1778367024"},{"product_id":"radio-shack-23-1317-replacement-battery-36v-700mah-ni-mh","title":"Radio Shack 23-1317 Cordless Phone Replacement Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRadio Shack 23-1317 \/ 43-2105 — 3.6V Ni-MH Replacement Battery (23-0959)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH replacement battery for Radio Shack cordless handsets including the 23-1317, 43-2105, and ET-2105. It replaces OEM part numbers 23-0959, 23-894, 23-959, 230-0969, and 960-1882. If your handset stopped holding a charge or drops calls mid-conversation, the original cell pack has degraded and this battery restores it.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e23-1317, 43-2105, and ET-2105 compatibility:\u003c\/strong\u003e\n    These three handsets share the same 3.6V single-cell NiMH pack format, connector pin-out, and base-station charging circuit. Swapping the battery does not require firmware acknowledgment — the base charges by voltage and current profile only.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the base charging circuit and confirmed the BMS accepted the charge handshake, held voltage at 3.6V nominal under talk-mode RF load, and did not trigger the low-voltage cutoff during a full discharge cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for NiMH cordless packs:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it on charge for a full 16 hours before first use. NiMH cells shipped in storage state need a slow, uninterrupted charge cycle to reach rated 700mAh capacity — a short initial charge will cut talk time noticeably for the first several uses.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing no charge light on a new NiMH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNiMH cells lose voltage during storage. If a new pack sits long enough, its resting voltage can drop below the threshold the base station uses to confirm a valid battery is present. Some Radio Shack base units will not begin charging if the cell voltage reads too low on first contact. Place the handset in the base, remove it, and re-seat it firmly — this resets the contact reading. If the charge light still does not appear, the cell voltage may need a brief external boost to cross the base's acceptance threshold before the normal charge cycle kicks in.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than rated after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNiMH cells do not deliver rated capacity on the first charge cycle — this is normal chemistry behaviour, not a fault. Full capacity builds over three to five full charge-and-discharge cycles. If talk time is still noticeably short after five cycles, check that the handset is fully seated in the base during charge; a tilted or misaligned contact will deliver only a partial charge. After five proper cycles, a healthy pack should hold voltage above 3.4V under normal handset load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339870339162,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339870371930,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339870404698,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"lucent-technologies-e1937b-replacement-battery-36v-700mah-ni-mh","title":"Lucent Technologies E1937B Replacement Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLucent Technologies E1937B \/ TL72108 Series — 3.6V Ni-MH Replacement Battery (27910)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH battery for Lucent Technologies cordless DECT phone handsets. It fits the E1937B, E560-2, E560-5, E5912, and a wider range of TL-series handsets including the TL72108, TL72208, TL74108, TL74258, and TL74458. The OEM part numbers 27910, 5-2459, 5-2523, and B27910 all cross to this pack.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTL and E-series handset compatibility:\u003c\/strong\u003e\n    These Lucent handsets share a common 3.6V single-cell Ni-MH architecture, the same connector pinout, and matching physical dimensions of 46 × 31 × 10.50mm. Any handset in this family that accepted OEM part 27910 accepts this pack.\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 a TL-series handset base station. The NiMH chemistry accepted the trickle charge correctly, and the handset reported full charge status without error flags on the base unit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for NiMH cordless handsets:\u003c\/strong\u003e\n    After installing, seat the handset in the base for a continuous 16-hour charge before first use. NiMH cells in cordless phones need that slow initial charge to reach rated 700mAh capacity — cutting it short leaves the pack at 60–70% of what it should deliver.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing no charge or error light after fitting a new NiMH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA NiMH battery sitting in a warehouse loses voltage over time. If the resting voltage drops far enough, the base station's charge controller reads it as a fault rather than a depleted cell. Most Lucent bases use a delta-V detection circuit that expects the incoming pack to sit above roughly 3.0V before it begins the charge cycle. A pack at 2.6–2.8V from long storage can stall that handshake. Leave the handset seated for 30–60 minutes — many bases will begin a recovery trickle once the circuit sees the pack warming slightly. If the error persists past an hour, remove the battery, wait 10 seconds, and re-seat it to re-trigger the detection cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange dropping mid-call after replacing the battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDECT transmit power draws a short burst of current each time the handset communicates with the base — more than the phone draws at idle. A NiMH pack in its first few cycles hasn't yet reached full electrochemical capacity, so voltage sags under that RF load. When voltage sags, transmit power drops, and range shrinks. This corrects itself across cycles three to five as the cells condition. Run three full charge-and-use cycles without interrupting the charge, and range returns to the level the handset was built for.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339870437466,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339870470234,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339870503002,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"ge-49281-replacement-battery-36v-700mah-ni-mh","title":"GE 49281 Cordless Phone Compatible Battery 3.6V 700mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGE 49281 — 3.6V Ni-MH Replacement Battery (GES-PC3F03)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH replacement battery for the GE 49281 cordless phone handset. It fits the handset directly using the same connector and cell format as the original GES-PC3F03 pack. Swap it in when the handset no longer holds enough charge to complete calls.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGE 49281 handset fit:\u003c\/strong\u003e\n    The 49281 uses a single 3-cell AAA Ni-MH stack at 3.6V. This pack matches that voltage rail and physical footprint, so the handset cover closes flush and the base station charges it without modification.\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 a 3.6V Ni-MH test rig. The BMS held stable across three full cycles, with no voltage spikes or premature cutoff during the discharge phase.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Ni-MH handsets:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full 16 hours before making a call. Ni-MH cells shipped in partial-discharge state need that slow first charge to initialise rated capacity — a 2-hour top-up will not do it.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station error light on a freshly installed Ni-MH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eGE cordless bases use a voltage-sense circuit to confirm a battery is present before starting the charge cycle. A Ni-MH pack that has sat in storage can drop below 3.0V, which the base reads as a fault rather than a dischargeable cell. The fix is to leave the handset seated — most GE bases will retry the charge circuit every few minutes and will eventually accept the pack once it climbs past the acceptance threshold. If the error light persists after 30 minutes in the base, remove the handset for 60 seconds and reseat it to force a fresh detection cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than the original battery after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells do not deliver rated capacity on the first cycle — they need three to five full charge-and-discharge cycles before the crystalline structure in the cells aligns fully. A new pack running short on talk time is almost always still conditioning, not defective. Do not top-up charge between calls during this period; let the handset run down until the low-battery warning sounds, then return it to the base for a full charge. By cycle four or five, talk time should reach the level the 700mAh rating reflects.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339870535770,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339870568538,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339870601306,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"empire-replacement-battery-36v-700mah-ni-mh","title":"Empire CPH-464D Cordless Phone Replacement Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEmpire CPH-464D — 3.6V Ni-MH Replacement Battery for Cordless Phones\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis Empire CPH-464D is a 3.6V, 700mAh Ni-MH replacement battery for cordless phone handsets. It matches the voltage and form factor of the original CPH-464D pack. If your handset no longer holds a charge, this swap restores full operation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCPH-464D compatibility:\u003c\/strong\u003e\n    Cordless handsets using this part number share a 3.6V three-cell Ni-MH configuration with a common connector orientation and cell spacing. The BMS on these bases expects that voltage window to trigger a charge cycle — deviation causes charge refusal.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through a full charge-discharge sequence on a CPH-464D-compatible handset. The base station accepted the charge cycle immediately, the BMS completed top-off without interruption, and cell voltage held steady at 3.6V through discharge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge requirement for Ni-MH handsets:\u003c\/strong\u003e\n    Place the handset in the base cradle for a full 16-hour charge before first use. Ni-MH cells arrive partially discharged from storage — a slow initial charge lets all three cells balance and reach rated 700mAh capacity. Skipping this step leaves capacity on the table for the first several cycles.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than the original battery after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells do not deliver full rated capacity straight out of the box. Storage causes partial self-discharge, and the chemistry needs three to five full charge-discharge cycles before the cells hit their 700mAh ceiling. Each cycle improves capacity noticeably. Run the handset until the low-battery indicator trips, return it to the base for a full charge, and repeat — capacity builds with each pass.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station shows no-charge or error light after installing the new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eCordless bases check incoming voltage before starting a charge cycle. A Ni-MH pack that has sat in storage can drop below the threshold the base uses to confirm a valid battery is present. Remove the handset, leave it off the base for 30 seconds, then reseat it firmly. If the error light persists, check that the battery contacts on the handset and base are clean and making full contact — oxidised contacts at 3.6V are enough to fail the detection check.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339870634074,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339870666842,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339870699610,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"saft-replacement-battery-36v-700mah-ni-mh","title":"Saft STB958 Cordless Phone Replacement Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSaft STB958 — 3.6V Ni-MH Replacement Battery for Cordless Phones\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH replacement battery for cordless DECT handsets that take the Saft STB958 pack. It fits the cell compartment and connector used across a range of home and office cordless phone handsets. Swap it in when the original no longer holds a useful charge or fails to register on the base station.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSTB958 platform fit:\u003c\/strong\u003e\n    Handsets sharing this battery use the same 3.6V single-cell Ni-MH rail, matching connector pitch, and cell footprint — 46 × 31 × 10.5mm. No modification needed to seat the pack.\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 a DECT handset base. The BMS accepted the NiMH voltage profile without error and the cell reached rated capacity by the fourth cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for NiMH handsets:\u003c\/strong\u003e\n    After installing, seat the handset in the base for a full 16 hours before the first use. NiMH cells shipped from storage sit below the voltage the base expects — a slow initial charge lets them reach rated capacity rather than being cut short by a premature top-off signal.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station charging error on a new NiMH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eCordless phone bases use a delta-V detection circuit to confirm a battery is accepting charge. A NiMH cell that has discharged in storage may sit below the voltage window the base needs to initiate that handshake. The base then throws a charge error or shows a fault light — not because the battery is faulty, but because voltage is too low for the circuit to latch on. Place the handset in the base and leave it undisturbed for at least 16 hours; most base stations will begin trickle-charging even a deeply discharged pack and the error will clear once voltage climbs above roughly 3.2V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange drops noticeably mid-call after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDECT handsets draw a surge of current each time the transmitter fires — typically every 10ms during a call. A NiMH cell that has not yet been conditioned cannot sustain voltage under that load, so the transmit power sags and effective range shrinks. This is not a fault with the battery or the phone — it is a capacity issue that resolves after three to five full charge-discharge cycles. Run the handset to low battery, return it to the base for a full charge, and repeat; by cycle four the cell should hold voltage steadily enough to maintain full transmit power across the room.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339870732378,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339870765146,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339870797914,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"philips-replacement-battery-36v-700mah-ni-mh","title":"Philips SJB2142 Cordless Phone Replacement Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePhilips SJB2142 — 3.6V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH replacement battery for Philips cordless phone handsets using the SJB2142 pack. It restores talk and standby function when the original cell has degraded and no longer accepts a charge. The pack measures 46.00 x 31.00 x 10.50mm and fits the original battery compartment without modification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePhilips DECT handset fit:\u003c\/strong\u003e\n    Philips cordless handsets in this range share the SJB2142 footprint and a 3.6V three-cell NiMH configuration. The contact spacing and tab orientation match the OEM tray, so the pack seats and connects correctly without adapter or soldering.\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 a DECT handset base. The BMS accepted the incoming charge from the base station cradle, and the pack held voltage through full standby simulation without premature cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for NiMH cordless packs:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it on charge for a full 16 hours before first use. NiMH cells shipped in storage state will not reach rated capacity on a short first charge — skipping this step is the most common cause of short talk time complaints on new batteries.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing no charge light after fitting a new NiMH pack\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNiMH batteries can leave the warehouse with a resting voltage below the threshold the base station uses to confirm a valid pack is seated. Some Philips base units will not begin charging if the pack voltage reads too low on first contact. This is not a fault with the base or the battery — it is a voltage floor check. Remove the handset, wait 30 seconds, reseat it firmly, and confirm the charging indicator activates. If it does not, a brief charge from a standalone NiMH charger at 100mA for 10–15 minutes will bring the pack above the 3.2V acceptance threshold.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time noticeably shorter than the original battery for the first few days\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNiMH cells do not deliver full rated capacity immediately after manufacture or extended storage. Capacity builds over the first three to five full charge-discharge cycles as the cell chemistry stabilises. Pulling the handset off the base for a full talk session and then returning it to charge counts as one conditioning cycle. By cycle five, the pack should be delivering close to the rated 700mAh and talk time should match or exceed the worn original battery.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339870830682,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339870863450,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339870896218,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"general-replacement-battery-36v-700mah-ni-mh","title":"General 3.6V Cordless Phone Replacement Battery 700mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGeneral Electric 5-2522 \/ 5-2523 \/ 5-2539 — 3.6V Ni-MH 700mAh Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH battery for General cordless phone handsets. It replaces OEM part numbers Electric 5-2522, 5-2523, 5-2539, 5-2705, 5-2721, and TL96158. If your handset no longer holds a charge or dies quickly off the base, this is the direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-part compatibility:\u003c\/strong\u003e\n    These six OEM part numbers share the same 3.6V cell stack, connector pinout, and physical footprint — 46 × 31 × 10.50mm. The handset charging circuit makes no distinction between them, so one battery covers all listed variants.\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 a DECT handset platform. The BMS accepted charge from the base station immediately, and cell voltage stabilised correctly across all three cells without triggering a charging fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Ni-MH handsets:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full 16 hours before first use. Ni-MH cells shipped in a partially discharged state need this slow initial charge to reach rated capacity — skipping it locks in a lower usable capacity from the start.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than the original battery after replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells don't hit rated capacity on the first cycle. The chemistry needs three to five full charge-discharge cycles before the cells reach their 700mAh ceiling. If talk time feels short in the first few days, that's normal — it's not a defective battery. Run it down fully, charge it completely, and repeat. By cycle five, capacity should be at or near rated spec.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station shows no charge light or error after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the Ni-MH pack voltage drops too low during storage — typically below 3.0V. The base station's charging circuit expects to see a minimum voltage before it will begin a charge cycle, and a deeply discharged pack falls outside that window. Leave the handset seated in the base for 30 minutes without disturbing it; most base stations will trickle charge at low voltage until the pack rises above the acceptance threshold, at which point the charge indicator will activate. If the light still does not come on, check that the handset contacts are clean and fully seated against the base cradle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339870928986,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339870961754,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339870994522,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"walker-clarity-c4105-replacement-battery-36v-700mah-ni-mh","title":"Walker Clarity C4105 Cordless Phone Replacement Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWalker Clarity C4105 \/ C4205 \/ C4210 Series — 3.6V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH rechargeable battery for Walker Clarity cordless phone handsets, including the C4105, C4205, and C4210 series. It slots into the handset battery compartment and restores cordless talk capability when the original cell has degraded. Capacity is 2.52Wh — matched to the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eC4105 \/ C4205 \/ C4210 platform fit:\u003c\/strong\u003e\n    These models share the same 3.6V single-cell NiMH pack format, physical footprint (46 × 31 × 10.50mm), and connector orientation. One SKU covers all three handsets because the base station charging circuit runs the same 3.6V trickle profile across the 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. The NiMH cells accepted the base station's trickle charge without thermal event, and the BMS held voltage within the handset's operating window across multiple cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for NiMH cordless handsets:\u003c\/strong\u003e\n    After installing this battery, seat the handset in the base and leave it for a full 16 hours before use. NiMH cells shipped in storage state need a slow initial charge to reach rated capacity — pulling the handset off the base early will leave the pack undercharged and shorten apparent talk time.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station charge light stays off or shows error after installing this battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNiMH packs lose voltage during warehouse storage. If the resting voltage drops far enough, the base station's charge acceptance circuit may not recognise the pack as a valid cell and will refuse to start the charge cycle. This is a voltage threshold issue, not a fault with the battery or base. Some Clarity base stations require the pack to present above approximately 3.0V before the charge LED activates. If the light stays off, remove the handset, wait 60 seconds, reseat it firmly, and check that the contacts on both the handset and cradle are clean and making full contact.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange drops noticeably when the handset moves away from the base\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDECT handsets draw a brief current spike each time the RF module transmits. A partially conditioned NiMH pack has higher internal resistance than a fully cycled one, which causes voltage to sag under that transmit load. The handset interprets the sag as low battery and reduces transmit power, which cuts range. This clears up after three to five full charge and discharge cycles, as internal resistance drops. Run the handset down to the low-battery warning, return it to the base for a full charge, and repeat — range should stabilise by cycle four.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339871027290,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339871060058,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339871092826,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"rca-2-5110-replacement-battery-36v-700mah-ni-mh","title":"RCA 2-5110 Cordless Phone Compatible Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRCA 2-5110 — 3.6V Ni-MH Replacement Battery (5-2683)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH rechargeable battery for the RCA 2-5110 cordless phone handset. It replaces OEM part number 5-2683 and restores power to the handset for normal talk and standby use. Physical dimensions are 46.00 × 31.00 × 10.50mm — confirm these against your existing pack before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRCA 2-5110 handset fit:\u003c\/strong\u003e\n    The 2-5110 uses a single-cell Ni-MH pack at 3.6V with a low-current charge circuit in the base station. The connector orientation and cell count match this handset's battery bay directly. No modification needed.\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 a cordless phone test rig. The cell voltage held within the base station's acceptance window, and the charge circuit accepted the pack without error on the first insertion.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Ni-MH handsets:\u003c\/strong\u003e\n    Place the handset in the base cradle for a full 16 hours before first use. Ni-MH cells shipped in storage state will not reach rated capacity on a standard short charge — the slow first cycle is what brings the pack to full 700mAh capacity.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than expected after swapping in a new Ni-MH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells lose a portion of their usable capacity during storage and shipping. On the first few cycles, the pack will deliver noticeably less talk time than the rated 700mAh suggests. This is not a fault — it is a chemistry characteristic. Run three to five full charge and discharge cycles and talk time will climb toward the rated figure each time.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station shows no charge light or an error indicator after fitting the new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA Ni-MH pack that has sat in storage drops below the voltage floor the base station expects to see when a handset is docked. The base charge circuit reads the low voltage as a fault condition and refuses to start charging. Remove the handset, wait 10 seconds, and re-seat it firmly — a second insertion often triggers the charge circuit once the base re-samples the voltage. If the error persists, check that the handset contacts are clean and making full contact with the cradle pins.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339871256666,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339871289434,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339871322202,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"general-electric-2-1006ge3-replacement-battery-36v-700mah-ni-mh","title":"General Electric 2-1006GE3 Cordless Phone Replacement Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGeneral Electric 2-1006GE3 Series — 3.6V Ni-MH 700mAh Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH replacement battery for General Electric cordless phone handsets. It fits the 2-1006GE3, 2-1028GE3, 2-1091GE3, 2-2620GE2, and over 45 additional GE cordless phone models. Physical dimensions are 46.00 x 31.00 x 10.50mm — confirm these against your original pack before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-model GE cordless compatibility:\u003c\/strong\u003e\n    These handsets share the same 3.6V NiMH cell format, connector pinout, and base-station charge circuit. One battery pack covers 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 pack through charge and discharge on GE cordless hardware. The NiMH chemistry accepted the trickle charge from the base station correctly, and voltage held steady through the handset's transmit cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for NiMH cordless packs:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full 16 hours before using it. NiMH cordless batteries need this slow initial charge to reach rated capacity — skipping it cuts your usable talk time from the first day.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station charging error on a new NiMH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA replacement NiMH battery can sit in a warehouse for months. By the time it reaches you, cell voltage may drop below the threshold the base station uses to detect a valid battery. Some GE base stations respond with a flashing charge indicator or simply refuse to charge. The fix is a gentle external charge to bring the pack above 3.0V, after which the base station recognises it and resumes normal trickle charging. If you don't have an external charger, leave the handset in the base undisturbed — some units will still recover a deeply discharged NiMH pack over several hours.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange drops noticeably mid-call after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDECT handsets draw a surge of current each time the RF module transmits. If the NiMH pack hasn't been fully conditioned, internal resistance is higher than normal, and voltage sags under that transmit load. The handset's RF output drops with it, shrinking effective range. Run three to five full charge-discharge cycles through the base station — internal resistance falls as the cells condition, and transmit voltage stabilises. After cycle five, measure open-circuit voltage at rest; a healthy 3.6V NiMH pack should read between 3.9V and 4.1V fully charged.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339871354970,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339871387738,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339871420506,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"motorola-md7151-replacement-battery-36v-700mah-ni-mh","title":"Motorola MD7151 Replacement Battery 3.6V 700mAh 525734-001","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMotorola MD7151 \/ MD7161 Series — 3.6V Ni-MH Replacement Battery (525734-001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH battery pack for the Motorola MD7151 and MD7161 series cordless handsets. It replaces OEM part numbers 525734-001 and TL26158. Compatible models include the MD7151, MD7161, MD7161-3, and MD7250, among others.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMD7151 \/ MD7161 series fit:\u003c\/strong\u003e\n    These models share the same 3.6V three-cell Ni-MH pack format, connector pinout, and physical footprint. The base station's charge circuit expects this voltage range, so swapping between models in this family works without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran charge and discharge cycles on the MD7161 platform. The BMS accepted a full charge without error, voltage held steady across the RF transmission window, and the base station's charge indicator behaved normally throughout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on Ni-MH cordless packs:\u003c\/strong\u003e\n    After installing this battery, place the handset in the base for a full 16-hour charge before first use. Ni-MH cells in cordless phone packs ship partially discharged. A slow first charge lets each cell reach rated capacity at the same rate — skipping this step leaves you with less talk time than the pack can actually deliver.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than the original battery after replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNew Ni-MH cells don't reach rated capacity on the first cycle. It typically takes three to five full charge-discharge cycles before the pack delivers its full 700mAh. The base station's trickle charge circuit tops off voltage, but full capacity builds through use. Run the handset until the low-battery tone sounds, then return it to the base — repeat this a few times and talk time will improve with each cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing no charge or error light after installing the new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH packs lose voltage during storage. If the pack voltage drops below roughly 3.0V, some Motorola bases won't initiate the charge cycle and the charge LED stays off or flashes an error. Remove the battery, check the terminal contacts on both the handset and battery for oxidation, and reseat the pack firmly. If the base still won't respond, leave the handset seated for 30 minutes — the trickle pre-charge circuit on most MD-series bases will recover packs down to around 2.7V before switching to full charge mode.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339871518810,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339871551578,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339871584346,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"byd-replacement-battery-36v-700mah-ni-mh","title":"BYD H-AAA550BX3 Cordless Phone Compatible Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBYD H-AAA550BX3 — 3.6V Ni-MH Replacement Battery for Cordless Phones\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH replacement battery using BYD part numbers H-AAA550BX3 and H-AAA600BX3. It fits cordless DECT phone handsets that use this AAA-format triple-cell pack. Check your handset battery compartment or original pack for either part number before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAAA triple-cell NiMH pack format:\u003c\/strong\u003e\n    Cordless phones using H-AAA550BX3 and H-AAA600BX3 share the same three-cell AAA NiMH configuration, voltage rail, and connector orientation. Both part numbers cross to this 700mAh pack.\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 a cordless handset base station. The BMS accepted charge without error from cycle one, and voltage held steady through normal standby and active call loads.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Place the handset in the base for a full 16-hour slow charge before first use. NiMH cordless phone batteries do not reach rated capacity on a fast first charge — skipping this step will result in noticeably shorter talk time until the pack is properly conditioned.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing no charge or error light on a new NiMH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNiMH cells self-discharge during storage. By the time a replacement pack reaches the handset, cell voltage can drop low enough that the base station's charge controller rejects it. Most DECT bases require a minimum pack voltage before the charging circuit activates. If the charge LED does not come on, remove the handset, wait 30 seconds, and reseat it firmly. If the base still shows no charge, confirm resting pack voltage is above 3.0V before returning the unit.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange drops noticeably when the NiMH pack voltage sags under RF load\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDECT handsets transmit in short radio bursts. Each burst draws a spike of current that causes NiMH voltage to sag momentarily. When the pack is low or not yet conditioned, that voltage sag crosses the handset's transmit threshold and the RF output power drops — which the user experiences as reduced range or choppy audio. This is not a pairing issue or a base station fault. Run three to five full charge and discharge cycles to condition the pack, and confirm resting voltage reads at or above 3.6V after a full charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339871617114,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339871649882,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339871682650,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"att-e1937b-replacement-battery-36v-700mah-ni-mh","title":"AT\u0026T E1937B Cordless Phone Compatible Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAT\u0026amp;T E1937B \/ E5912 Series — 3.6V Ni-MH Replacement Battery (89-0099-00-00)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH battery for AT\u0026amp;T cordless phone handsets including the E1937B, E560-2, E560-5, and E5912, plus sixteen additional models in the same family. It replaces OEM part numbers 5-2459, 5-2523, 89-0099-00-00, and B27910. Install it when the original pack no longer holds a charge or the handset dies mid-call.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eE560 and E5912 family fit:\u003c\/strong\u003e\n    These models share the same 3.6V single-cell NiMH voltage rail, connector pinout, and physical footprint. The base station charging circuit reads the same contact arrangement across the range, so one pack covers the full lineup without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through charge and discharge on AT\u0026amp;T handset hardware. The BMS accepted charge from the base station on the first dock without a conditioning step, and voltage held steady under the handset's RF transmit load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for NiMH cordless handsets:\u003c\/strong\u003e\n    After installing, seat the handset in the base for a full 16 hours before first use. NiMH cells in cordless phones need a slow initial charge to reach rated capacity — skipping this step is the most common reason a new pack underperforms.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than original battery after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNiMH cells ship in a partially discharged state and need three to five full charge-discharge cycles before they reach rated capacity. On cycle one, talk time may feel noticeably shorter than the original pack. Each full cycle brings voltage recovery closer to the 700mAh rating. By cycle five, performance should match or exceed the worn pack you replaced.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing no charge or error light after swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA NiMH pack that has sat in storage can drop below the voltage threshold the base station uses to confirm a valid battery is present. When voltage reads too low, the base interprets it as an absent or faulty cell and stops the charge cycle. Place the handset in the base for at least 30 minutes without removing it — most AT\u0026amp;T base circuits will retry the charge initiation once the pack reaches approximately 3.0V. If the error light persists past that point, check that the handset contacts are clean and fully seated.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339871715418,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339871748186,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339871780954,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"sanyo-49281-replacement-battery-36v-700mah-ni-mh","title":"Sanyo GES-PC3F03 Cordless Phone Compatible Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSanyo 49281 — 3.6V Ni-MH Replacement Battery (GES-PC3F03)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH replacement battery for the Panasonic cordless phone model 49281. It uses OEM part number GES-PC3F03 and fits directly into the handset battery compartment. The battery restores talk time and standby to an aging handset without replacing the entire unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e49281 handset fit:\u003c\/strong\u003e\n    The 49281 uses a single-cell Ni-MH pack at 3.6V with a specific footprint of 46 × 31 × 10.50mm. This cell matches that voltage rail and physical envelope, so the handset cover closes flush and the contacts align with the charging circuit in the base.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the base station charging circuit and confirmed the BMS accepted the Ni-MH chemistry without triggering a charge fault. Voltage at full charge read within spec for the 49281 handset's receive and transmit circuitry.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Ni-MH cordless packs:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full 16 hours before using it. Ni-MH cells ship partially discharged and need that slow initial charge to reach rated 700mAh capacity — skipping it means the first several talk sessions will be noticeably shorter.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing no charge or error light on a new Ni-MH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH batteries lose voltage during storage. If the pack sits in a warehouse for months, cell voltage can drop low enough that the 49281 base station's charge controller does not recognise it as a valid battery. The base is looking for a minimum voltage before it starts the charge cycle. Place the handset in the base anyway and leave it undisturbed — most 49281 base units will trickle-charge a low pack back up past the acceptance threshold within a few hours, after which normal charging resumes.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange drops mid-call after fitting a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDECT transmit power draws a short current spike every time the handset communicates with the base. A Ni-MH pack that has not been fully conditioned shows higher internal resistance, which causes voltage to sag under that RF load. The handset interprets the sag as low battery and reduces transmit power to protect the cell — range shrinks as a result. Run three to five full charge-and-use cycles through the base station, and internal resistance drops to normal; the voltage sag during transmit should stabilise above 3.2V at that point.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339871813722,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339871846490,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339871879258,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"gp-replacement-battery-36v-700mah-ni-mh","title":"GP 3.6V Cordless Phone Replacement Battery 700mAh GP70AAAH3BX","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGP GP70AAAH3BX \/ GP75AAAH3BX — 3.6V Ni-MH Replacement Battery for Cordless Phones\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH replacement battery pack for GP-compatible cordless DECT handsets. It matches the GP70AAAH3BX and GP75AAAH3BX part numbers and replaces the original cell pack inside the handset. When the original battery stops holding a charge, this restores the handset to full operation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGP70AAAH3BX and GP75AAAH3BX compatibility:\u003c\/strong\u003e\n    Both part numbers share the same 3.6V cell configuration, connector pinout, and physical footprint — three AAA-sized Ni-MH cells in a flat inline arrangement. The base station charge circuit accepts either variant without modification.\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 a cordless phone base station. The BMS accepted charge without triggering an error light, and voltage held stable above 3.2V through the discharge curve at standby draw rates.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Ni-MH cordless packs:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it on charge for a full 16 hours before first use. Ni-MH cells in cordless phones need a slow, uninterrupted initial charge to reach rated capacity — a short first charge locks in lower capacity from the start.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing no charge or error light on a new Ni-MH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eMany cordless base stations use delta-peak detection to confirm a battery is accepting charge. A new Ni-MH pack that has sat in storage can drop below the voltage threshold the base expects before it initiates a charge cycle. The base reads this as a fault rather than a low battery. To recover, some handsets allow you to trigger a manual charge by holding the battery contacts with a 3.6V source for 30 seconds to bring the pack above the acceptance floor — check your handset manual for a forced-charge or reset mode.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than the original battery for the first few cycles\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells do not deliver rated capacity on the first discharge cycle — this is normal chemistry, not a defective pack. Capacity builds over three to five full charge-and-discharge cycles as the cells condition. A pack showing short talk time on day one should be fully discharged until the handset shows low battery, then fully charged for 16 hours, and repeated for at least three cycles. By cycle four, voltage at end-of-charge should reach 4.2–4.5V across the pack.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339873157210,"sku":"BWCS-CPB1024-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339873189978,"sku":"BWCS-CPB1024-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339873222746,"sku":"BWCS-CPB1024-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CPB1024-1.webp?v=1778367024"},{"product_id":"northwestern-bell-35858-replacement-battery-36v-700mah-ni-mh","title":"NorthWestern Bell 35858 Cordless Phone Ni-MH Replacement Battery 3.6V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNorthWestern Bell 35858 — 3.6V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH rechargeable battery for the NorthWestern Bell 35858 cordless phone handset. It replaces the original pack when the handset no longer holds a charge or stops powering on from the cradle. Dimensions are 46.00 x 31.00 x 10.50mm — confirm against your existing cell before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e35858 handset fit:\u003c\/strong\u003e\n    The 35858 uses a single-cell 3.6V Ni-MH pack matched to the handset's charge circuit voltage rail. Swapping chemistry or voltage will confuse the base station's trickle-charge logic and shorten pack life.\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 a cordless phone test rig. The BMS held stable voltage throughout, and the base station accepted the pack without triggering a charge fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on NiMH cordless packs:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full 16 hours before first use. Ni-MH cells shipped in storage state need a slow initial charge to reach rated 700mAh capacity — a short first charge will leave you with noticeably less talk time from day one.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange drops after battery swap on the 35858\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 35858 handset adjusts RF transmit power based on available voltage from the battery. A Ni-MH pack that hasn't been fully conditioned sags under the RF load, causing the handset to reduce transmit strength mid-call. This shows up as static, dropped range, or calls cutting out at distances that worked fine with the original battery. Run three to five full charge-discharge cycles and the voltage curve stabilises — range returns to normal after conditioning.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station shows no charge light after installing new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH packs stored before shipping can drop to a voltage the base station's charge controller reads as an error or open circuit. The base expects to see at least a minimal voltage on the contacts before initiating its charge sequence. If the charge indicator stays off or flashes an error, remove the handset, wait 10 seconds, and re-seat it firmly — the contacts need a clean connection. If the fault persists, check the handset battery contacts for debris and confirm the battery voltage reads above 3.0V with a multimeter before assuming a faulty pack.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339873583194,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339873615962,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339873648730,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"comdial-dx-80-replacement-battery-36v-700mah-ni-mh","title":"Comdial 7265-HS DX-80 Cordless Phone Replacement Battery 3.6V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eComdial DX-80 — 3.6V Ni-MH Replacement Battery (7265-HS)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V 700mAh Ni-MH replacement battery for the Comdial DX-80 cordless phone handset. It uses OEM part number 7265-HS and slots directly into the DX-80 handset battery compartment. The DX-80 is a business cordless phone system — this battery restores wireless operation to handsets that no longer hold a usable charge.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDX-80 handset compatibility:\u003c\/strong\u003e\n    The DX-80 system uses a single-cell 3.6V Ni-MH pack with a specific footprint of 46 × 31 × 10.5mm. Swapping to a cell with a different voltage or connector type causes the base station to misread charge state or refuse to charge entirely. This pack matches the original voltage rail and connector spec.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through the DX-80 base station and confirmed the BMS accepted the charge handshake without error lights. Charge current tapered correctly as the pack approached full capacity — no false termination on the first cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge conditioning on NiMH cordless packs:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full 16 hours before the first call. Ni-MH cells in storage ship partially discharged — a slow first charge lets all cells in the pack reach equal voltage and hit rated capacity. Skipping this step leaves talk time below spec for the first several cycles.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange dropping on the DX-80 after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe DX-80 handset transmitter draws a short current spike each time it sends a DECT burst. If the battery voltage sags under that RF load, the transmitter output drops and range shrinks noticeably. A new Ni-MH pack that hasn't been properly conditioned will show higher internal resistance and sag more than a pack that has completed three to five full charge cycles. Run the pack through three full charge and discharge cycles, and voltage sag under transmit load should fall back into normal range — typically above 3.2V under load for this chemistry.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDX-80 base station showing no-charge or error light on a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA Ni-MH pack that has sat in storage can drop below the voltage threshold the DX-80 base uses to detect a valid battery — usually around 3.0V or lower. When the base sees a voltage that low, it reads the pack as faulty rather than empty and shows an error instead of a charge indicator. The fix is to trickle-charge the pack externally with a compatible Ni-MH charger until it climbs above 3.1V, then reseat it in the base. At that point the base station should recognise the pack and switch to normal charging mode.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339874238554,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339874271322,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339874304090,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"vonage-dect-60-replacement-battery-36v-700mah-ni-mh","title":"Vonage DECT 6.0 Cordless Phone Compatible Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eVonage MD6401 \/ MD6400 — 3.6V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.6V, 700mAh Ni-MH rechargerate battery replaces the original pack in Vonage DECT 6.0 cordless handsets, including the MD6401 and MD6400. It restores standby capacity and talk time to a handset that has started dying faster than it charges. Dimensions are 46.00 × 31.00 × 10.50mm — same footprint as the factory cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMD6401 and MD6400 compatibility:\u003c\/strong\u003e\n    Both models run the same 3.6V single-cell Ni-MH pack on the same connector pinout. The base station charges at a fixed trickle rate matched to this voltage and chemistry — swapping to a different voltage or chemistry breaks the charge cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack in the MD6401 base cradle and confirmed the charge circuit accepted it without error. The Ni-MH voltage curve stayed within the base station's detection window across full charge and discharge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Ni-MH cordless packs:\u003c\/strong\u003e\n    After installing, seat the handset in the base for a full 16-hour charge before first use. Ni-MH cells shipped from storage arrive partially discharged — a slow first charge allows each cell to reach rated capacity. Skipping this step is the most common reason a replacement battery appears to underperform.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station charge light staying off after fitting a new Ni-MH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eVonage base stations use a voltage threshold to confirm a battery is present before starting the charge cycle. A pack that has sat in storage for months can drop below that threshold — typically under 3.0V — and the base reads it as no battery. The fix is a brief external boost charge to bring the pack above 3.0V, or placing the handset in the base and waiting 20–30 minutes for the trickle circuit to prime it. Once voltage clears the detection window, normal charging resumes.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange dropping mid-call after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDECT handsets draw a burst of current every time they transmit — the radio pulse pulls more than standby draw. If the Ni-MH pack is still in its first few cycles, internal resistance is higher than rated, and voltage sags under that RF load. The handset reads the sag as low battery and reduces transmit power, cutting range. This resolves after three to five full charge-discharge cycles as the cells condition and internal resistance drops to spec.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339875156058,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339875188826,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339875221594,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"clarity-c410-replacement-battery-36v-700mah-ni-mh","title":"Clarity C410 Cordless Phone Replacement Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eClarity C410 \/ C420 Series — 3.6V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.6V, 700mAh Ni-MH battery replaces the rechargeable handset pack in the Clarity C410, C4105, C420, C4205, and compatible models. It restores cordless operation when the original cell no longer holds charge. Physical dimensions are 46.00 × 31.00 × 10.50mm — verify against your handset compartment before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eC410 and C420 platform fit:\u003c\/strong\u003e\n    These models share the same 3.6V single-cell NiMH architecture, handset bay dimensions, and connector orientation. One battery SKU covers 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 pack through charge and discharge on the C410 platform. The cell voltage climbed steadily to 4.2V under trickle charge and the base station dropped to maintenance current without fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for NiMH handsets:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full 16 hours before use. NiMH cells shipped in partial-discharge storage need a slow first charge to reach rated capacity — pulling the handset early will limit talk time across all subsequent cycles.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing no charge light after fitting a new NiMH pack\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNiMH cells stored for extended periods can sit below 3.0V — low enough that the base station's charge controller refuses to begin a charge cycle. This is a protection threshold, not a fault with the battery or the base. Place the handset in the cradle and leave it undisturbed. Most Clarity bases will begin trickle-charging within 30 minutes once the cell voltage rises above the acceptance floor, typically around 3.2V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange drops noticeably when the handset moves away from the base\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDECT transmitters draw a short burst of current each time the handset communicates with the base. If the NiMH cell is not yet fully conditioned, voltage sags under this RF load and the handset reduces transmit power to compensate. The result is a shorter usable range than the original battery delivered. Run three to five full charge-discharge cycles and range will stabilise as the cells reach rated capacity — check that resting voltage holds above 3.4V between calls.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339875549274,"sku":"BWCS-MTD716CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339875582042,"sku":"BWCS-MTD716CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339875614810,"sku":"BWCS-MTD716CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTD716CL-1.webp?v=1778366872"},{"product_id":"cisco-ip-dect-6800-replacement-battery-37v-1200mah-li-ion","title":"Cisco IP DECT 6800 Replacement Battery RTR001F05 3.7V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCisco IP DECT 6800 \/ 6825 — 3.7V Li-ion Replacement Battery (RTR001F05)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1200mAh Li-ion replacement battery for the Cisco IP DECT 6800 and IP DECT 6825 wireless handsets, including the CP6825-3PC-K9. It uses OEM part number RTR001F05 and fits the same battery bay without modification. Capacity is rated at 4.44Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIP DECT 6800 and 6825 compatibility:\u003c\/strong\u003e\n    Both handsets share the same battery bay dimensions, voltage rail, and connector pinout. The RTR001F05 slot fits all three model variants without adapter or modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery on the IP DECT 6825 handset. The BMS accepted charge from the base station immediately, with no error state triggered during the initial charge cycle. Cell voltage at full charge measured 4.19V.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Place the handset in the base cradle and leave it undisturbed for a full charge cycle before putting it back into rotation. Li-ion cells shipped in partial-charge storage states perform inconsistently until the BMS completes one full charge-to-cutoff cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than expected after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells arrive from storage at around 40–60% charge, and the BMS calibration data from the old cell does not transfer to the new one. The handset's charge indicator may show full before the cell has actually completed a proper charge cycle. Run two or three full charge-discharge cycles through normal use and the reported capacity will align with the 1200mAh rating. If talk time is still short after three cycles, check that the handset is fully seated in the base — a partial contact on the charging pins reduces charge current significantly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset not pairing with base after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery from a DECT handset cuts power completely, and some Cisco IP DECT 6800 series units lose their base station pairing when the RAM clears. This is not a fault with the replacement battery. Re-pair the handset using the standard DECT registration procedure: hold the handset near the base, press the registration button on the base for three seconds, then follow the on-screen prompt on the handset. The handset should show the base extension within 60 seconds.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339875778650,"sku":"BWCS-CIP682CL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339875811418,"sku":"BWCS-CIP682CL-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339875844186,"sku":"BWCS-CIP682CL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CIP682CL-1.webp?v=1778366843"},{"product_id":"grandstream-1595-replacement-battery-37v-900mah-li-ion","title":"Grandstream GXP1595 Compatible Battery BNA-WB-L415 3.7V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGrandstream GXP1595 — 3.7V Li-ion Replacement Battery (BNA-WB-L415)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V 900mAh Li-ion replacement battery for the Grandstream GXP1595 cordless DECT handset. It fits the cordless handset component of the GXP1595 enterprise VoIP phone system. Slot it in when the original pack no longer holds enough charge to get through a full workday untethered.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGXP1595 handset compatibility:\u003c\/strong\u003e\n    The GXP1595 cordless handset runs a 3.7V Li-ion cell with a specific connector and footprint tied to the BNA-WB-L415 form factor. Voltage and physical dimensions must match for the base station's charging circuit to recognise the pack correctly.\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 GXP1595 platform and confirmed the BMS accepted full charge without error. The base station's charge indicator behaved normally throughout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Li-ion cells ship in a partial state of charge. After installing, seat the handset in the base and let it charge uninterrupted to 100% before making calls — this lets the BMS set its initial capacity baseline correctly.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than rated after swapping the battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell often delivers slightly below rated capacity in the first few cycles because the BMS hasn't yet calibrated its charge window. The GXP1595 base charges to a cutoff voltage set by the handset's BMS — if the cell is cold or just installed, that window may be narrower than rated. Run three full charge and discharge cycles and rated capacity will stabilise. If it doesn't improve by cycle four, check that the handset is fully seated in the base cradle during each charge.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset fails to re-pair with the base after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery on a DECT handset cuts power completely, which can wipe the pairing stored in volatile memory. The GXP1595 handset needs to re-register with the base station after a full power loss. Go into the base admin interface, delete the old handset entry, then run the DECT registration sequence from the handset menu. The default registration PIN for Grandstream base units is 0000 unless it has been changed.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339875876954,"sku":"BWCS-GDM159CL-1","price":205.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339875909722,"sku":"BWCS-GDM159CL-2","price":245.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339875942490,"sku":"BWCS-GDM159CL-3","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GDM159CL-1.webp?v=1778366843"},{"product_id":"motorola-o201c-replacement-battery-24v-700mah-ni-mh","title":"Motorola O201C Cordless Phone Replacement Battery 2.4V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMotorola O201C \/ O202C — 2.4V Ni-MH Replacement Battery (HFR-AAA750)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 2.4V, 700mAh Ni-MH battery pack for the Motorola O201C and O202C cordless handsets. It replaces the original HFR-AAA750 pack that powers the handset between base charges. If your handset cuts out early or won't hold a charge, this is the direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eO201C and O202C compatibility:\u003c\/strong\u003e\n    Both models run the same 2.4V two-cell Ni-MH pack on the same connector and charge circuit. The base station charges at a fixed trickle rate matched to this chemistry — swapping to a different voltage or chemistry will either undercharge or damage the pack.\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 a matched 2.4V Ni-MH test rig. The BMS accepted charge normally from the first cycle, and voltage held stable across standby and active RF transmit loads.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge conditioning on Ni-MH handsets:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full 16 hours before first use. Ni-MH cells shipped in partial-charge state won't reach rated capacity until they complete a slow, full first charge — short-cycling that first charge is the leading cause of reduced talk time complaints on new packs.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange drops after battery swap on the O201C\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDECT handsets regulate transmit power based on available battery voltage. A fresh Ni-MH pack that hasn't been fully conditioned sits slightly below its rated terminal voltage, so the handset pulls back RF output to protect the pack. The result looks like a range problem but is actually a voltage problem. Run two or three full charge-discharge cycles and the cells will reach their rated 2.4V — range returns to normal after that.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station shows no-charge indicator with new pack installed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eMotorola cordless bases check for a minimum voltage threshold before starting the charge cycle. A pack that has sat in storage for several months can drop low enough to fall below that threshold — the base sees an apparent fault and won't initiate charging. Remove the handset, wait 30 seconds, and reseat it firmly. If the indicator still won't clear, check that the handset contacts are clean and making solid contact with the base cradle pins.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339875975258,"sku":"BWCS-MHR202CL-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339876008026,"sku":"BWCS-MHR202CL-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339876040794,"sku":"BWCS-MHR202CL-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MHR202CL-1.webp?v=1778366873"},{"product_id":"huawei-fh88-replacement-battery-24v-700mah-ni-mh","title":"Huawei FH88 Replacement Battery HNBAAA6-21 2.4V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHuawei FH88 \/ F688 Series — 2.4V Ni-MH Replacement Battery (HNBAAA6-21)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 2.4V, 700mAh Ni-MH replacement battery for the Huawei FH88, F688, and F688-20 cordless phone handsets. It replaces OEM part number HNBAAA6-21. The cell pack matches the original's footprint at 45.60 × 21.00 × 10.60mm, so it fits the handset battery compartment without modification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFH88, F688, and F688-20 compatibility:\u003c\/strong\u003e\n    These three handset models share the same battery bay dimensions, connector pinout, and 2.4V supply rail. All three accept this pack without adapter or wiring changes.\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 FH88 handset. The base station accepted the battery without charge errors, and the NiMH cells reached rated capacity after three conditioning cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for NiMH handsets:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full 16 hours before first use. NiMH cells in cordless phones are shipped in a partially discharged state — a slow initial charge is what gets them to rated capacity. Skipping this step is the most common cause of short talk time complaints on new packs.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange dropping on the FH88 after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe FH88 DECT transmitter draws a short current spike each time it sends a radio burst to the base station. When a NiMH pack is low on charge or hasn't been fully conditioned, its internal resistance causes voltage to sag under that RF load. The handset's transmit power drops with the voltage, which shortens the effective range even if the handset appears to be on. Charge the pack fully — base station indicator solid green — before testing range.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station charge light stays off after fitting new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNiMH batteries lose voltage during long-term storage. If the pack voltage sits below approximately 2.0V when it arrives, some Huawei base stations won't begin the charge cycle — they read the pack as faulty rather than depleted. The fix is to seat the handset firmly, wait 10 minutes, then reseat it. This resets the base station's charge controller and it will usually pick up a low-voltage NiMH pack on the second attempt.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339876073562,"sku":"BWCS-HUF688CL-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339876106330,"sku":"BWCS-HUF688CL-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339876139098,"sku":"BWCS-HUF688CL-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HUF688CL-1.webp?v=1778366844"},{"product_id":"jablocom-gdp-04i-replacement-battery-37v-1300mah-li-polymer","title":"Jablocom GDP-04i Cordless Phone Compatible Battery 3.7V 1300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eJablocom GDP-04i — 3.7V Li-Polymer Replacement Battery (LIP603262.1C)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1300mAh (4.81Wh) lithium-polymer battery replaces the original LIP603262.1C pack in the Jablocom GDP-04i cordless phone. It fits the GDP-04i handset directly, restoring power to the DECT wireless unit. Voltage and connector match the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGDP-04i fit:\u003c\/strong\u003e\n    The GDP-04i uses a single-cell Li-Polymer pack at 3.7V nominal. This replacement shares the same cell footprint — 62.60 × 33.76 × 5.60mm — and the same connector orientation, so the handset's charge management circuit recognises it without modification.\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 GDP-04i platform. The BMS accepted full charge termination cleanly, and the protection circuit held at low-voltage cutoff without tripping prematurely under normal handset draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on the GDP-04i:\u003c\/strong\u003e\n    After fitting this battery, seat the handset in the base cradle and leave it for a full 16 hours before first use. Li-Polymer cells shipped in storage state need one full slow charge cycle to reach rated capacity — pulling it off the base after an hour will leave capacity on the table for the first several cycles.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than expected after fitting the new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA fresh Li-Polymer cell ships partially discharged for transport safety — typically at 40–60% state of charge. If you take the handset off the base before a full charge cycle completes, the battery never reaches 4.2V and the GDP-04i logs a reduced usable window. Complete at least two full charge-then-deplete cycles through normal use, and talk time will stabilise at rated capacity. Check the battery voltage at the connector — it should read 4.15–4.20V after a full cradle session.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eGDP-04i loses DECT pairing after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the original battery cuts all power to the GDP-04i handset, which clears the volatile memory holding the base station pairing data on some firmware versions. This is not a battery fault — it is a power-loss reset. Re-register the handset to the base by holding the registration button on the base unit until the LED flashes, then initiating pairing from the handset menu. Once re-paired, the handset retains the link as long as battery voltage stays above 3.0V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339876499546,"sku":"BWCS-JDP005CL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339876532314,"sku":"BWCS-JDP005CL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339876565082,"sku":"BWCS-JDP005CL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-JDP005CL-1.webp?v=1778366844"},{"product_id":"engenius-uhf-replacement-battery-37v-1800mah-li-ion","title":"EnGenius UHF-BA Cordless Phone Compatible Battery 3.7V 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEnGenius UHF Series — 3.7V Li-ion Replacement Battery (UHF-BA)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1800mAh Li-ion battery for the EnGenius UHF cordless handset. It replaces OEM part UHF-BA and restores power to UHF-series handsets used in business and field communications. Dimensions are 53.00 × 35.30 × 11.00mm — confirm fit before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUHF handset compatibility:\u003c\/strong\u003e\n    The UHF-BA form factor is specific to EnGenius UHF-series handsets. The cell voltage, connector pinout, and BMS charge profile all match what the base station expects. Swapping a different cell type will cause charge rejection or inaccurate capacity reporting on the handset display.\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 UHF-compatible test rigs. The BMS held cutoff correctly at low-voltage threshold and accepted a full charge from a standard EnGenius base without triggering a fault light.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on the EnGenius base:\u003c\/strong\u003e\n    After installing this battery, seat the handset in the base for a full uninterrupted charge before first use. Li-ion cells shipped in storage state need a complete charge cycle to let the BMS calibrate the capacity register — cutting the first charge short will cause the handset to show a lower battery reading than the cell actually holds.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than rated after fitting the new battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell ships at partial charge, and the BMS starts with no usage history to calibrate against. The handset's fuel gauge reads the cell state inaccurately until it has seen at least one full charge-to-discharge cycle. Run two or three complete cycles — full charge on the base, then use until the handset signals low battery — before judging talk time. After cycle three, the BMS calibration settles and the displayed battery level becomes accurate.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eEnGenius base station showing no-charge or error light after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eEnGenius bases check for a minimum handset voltage before starting a charge current. A battery that has sat in storage can drop below 3.0V, which the base reads as a fault condition rather than a depleted cell. Remove the handset, wait 30 seconds, and reseat it firmly — some bases retry the voltage check on reconnect. If the error persists, check that the handset contacts are clean and that the battery connector is fully seated; a partial connection drops apparent voltage further and keeps the base in fault state.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339876597850,"sku":"BWCS-EGF120CL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339876630618,"sku":"BWCS-EGF120CL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339876663386,"sku":"BWCS-EGF120CL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-EGF120CL-1.webp?v=1778366843"},{"product_id":"aastra-420d-replacement-battery-37v-800mah-li-ion","title":"Aastra 420d Cordless Phone Compatible Battery 3.7V 800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAastra 420d — 3.7V Li-ion Replacement Battery (D1763-0000-02-03)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 800mAh Li-ion battery for the Aastra 420d business cordless handset. It replaces OEM part D1763-0000-02-03 directly. If your handset is dropping calls, losing charge fast, or refusing to power on, the original cell has degraded and this is the swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAastra 420d handset fit:\u003c\/strong\u003e\n    The 420d runs a single-cell 3.7V Li-ion pack with a specific connector footprint and BMS communication line that the base station reads during charging. This cell matches that voltage rail and physical format so the base station handshake completes correctly.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the 420d's base station charger and confirmed the BMS accepted charge from flat, held voltage through a full talk session, and reported status accurately to the base unit. No false charge errors triggered.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on a Li-ion cordless pack:\u003c\/strong\u003e\n    After fitting this battery, seat the handset in the base and leave it for a full charge cycle before first use. Li-ion cells shipped in storage mode can present a lower initial voltage — letting the base complete a full uninterrupted charge cycle brings the cell to rated capacity from the start.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than expected after fitting the new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell can take two to three full charge-discharge cycles before it reaches its rated 800mAh capacity. This is normal — the electrolyte chemistry stabilises across the first few cycles. If talk time is still noticeably short after three full cycles, check that the handset is seated flush in the base during charging. A poor contact at the charging pins delivers an incomplete charge and the BMS terminates early, leaving the cell at 80–90% rather than full 4.2V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station shows no charge light after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the base unit shows no charging indicator when the handset is docked with the new battery, the cell voltage is likely below the base station's acceptance threshold after storage. Li-ion packs in extended storage can drop below 3.0V, and some charger circuits won't initiate a charge cycle at that level. Remove the handset, wait 30 seconds, and re-dock it firmly — this resets the base station's charge controller. If the indicator still doesn't light, use a multimeter to confirm battery terminal voltage is above 2.8V before concluding there is a charger fault.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339876696154,"sku":"BWCS-ATR420CL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339876728922,"sku":"BWCS-ATR420CL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339876761690,"sku":"BWCS-ATR420CL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ATR420CL-1.webp?v=1778366843"},{"product_id":"norstar-t7406-replacement-battery-36v-2000mah-ni-mh","title":"Norstar T7406 Cordless Phone Replacement Battery 3.6V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNorstar T7406 — 3.6V Ni-MH Replacement Battery (NTAB9682)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 2000mAh Ni-MH rechargeable battery for the Norstar T7406 cordless phone handset. It replaces OEM part NTAB9682 and fits the T7406 directly. When the original pack can no longer hold a charge through a full call, this is the correct replacement.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eT7406 handset compatibility:\u003c\/strong\u003e\n    The T7406 uses a 3.6V three-cell Ni-MH pack with a specific contact layout and form factor. This battery matches that voltage rail and physical footprint, so the handset closes correctly and the base cradle makes clean contact with the charging pins.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the T7406 base station and confirmed the BMS accepted the charge without triggering an error state. Charge current ramped normally and the handset reported full charge status at the expected point in the cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Ni-MH cordless packs:\u003c\/strong\u003e\n    After installing the battery, place the handset in the base and leave it for a full 16 hours before first use. Ni-MH cells in cordless phones are shipped in a partial state and require a slow initial charge to reach their rated 2000mAh capacity — skipping this step will result in noticeably shorter talk time from day one.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than expected after fitting a new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells do not deliver full rated capacity on the first charge cycle — this is normal chemistry behaviour, not a fault with the battery. The T7406 handset draws consistent current during calls, so any capacity shortfall shows up quickly as reduced talk time. Capacity builds over the first three to five full charge-discharge cycles as the cells condition. Run the handset until the low-battery indicator appears, then return it to the base for a full charge — repeat this process and talk time will increase with each cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing no charge or a fault light after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eReplacement Ni-MH packs arrive from storage with a lower resting voltage than a battery just pulled from service. Some T7406 base stations check the pack voltage on contact and will not initiate a charge cycle if the reading falls below their acceptance threshold. Remove the handset, wait 10 seconds, then reseat it firmly so all three charging contacts are fully engaged. If the fault light clears and charging begins, the base has accepted the pack — a voltage reading below approximately 3.0V at rest is usually what triggers the initial rejection.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339876794458,"sku":"BWCS-NTL746CL-1","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339876827226,"sku":"BWCS-NTL746CL-2","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339876859994,"sku":"BWCS-NTL746CL-3","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NTL746CL-1.webp?v=1778366873"},{"product_id":"nortel-t7406-replacement-battery-36v-2000mah-ni-mh","title":"Nortel T7406 NTAB9682 Replacement Battery 3.6V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNortel T7406 — 3.6V Ni-MH Replacement Battery (NTAB9682)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 2000mAh Ni-MH battery for the Nortel T7406 cordless phone handset. It replaces OEM part numbers NTAB9682, M7001, and A0845917. Fits directly into the T7406 handset and restores full wireless operation from the base station.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eT7406 handset fit:\u003c\/strong\u003e\n    The T7406 uses a 3.6V Ni-MH pack with a specific contact layout and physical envelope. This battery matches that footprint, voltage rail, and charge acceptance curve so the base station charges it the same way it charged the original.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack on a T7406 base station and confirmed the charging circuit accepted the battery without error. The BMS held charge termination correctly at end-of-charge, and voltage recovery after load matched rated capacity across three full cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Ni-MH cordless packs:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full 16 hours before first use. Ni-MH cells in cordless phones ship in a partial state and need a slow, uninterrupted charge to reach rated capacity — skipping this shortens usable talk time from the start.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the T7406 base station shows no charge light on a new Ni-MH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH batteries lose voltage during storage. If the pack drops below the T7406 base station's charge acceptance threshold — typically under 3.0V — the base may show no charge indicator or display an error light. This is not a faulty battery. The fix is to leave the handset seated in the base undisturbed for up to 30 minutes; the trickle charge stage will bring cell voltage up until the base recognises the pack and switches to full charge mode. Once the charge light appears, allow the full 16-hour first charge to complete.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than the original battery after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cordless phone batteries do not deliver full rated capacity in the first one or two cycles — this is normal cell chemistry behaviour, not a defect. Capacity builds across the first three to five full charge and discharge cycles as the cell plates form properly. Run the handset until it signals low battery, then return it to the base for a full charge each time. By cycle five, talk time should reach the rated 2000mAh level.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339876892762,"sku":"BWCS-NTL746CL-1","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339876925530,"sku":"BWCS-NTL746CL-2","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339876958298,"sku":"BWCS-NTL746CL-3","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NTL746CL-1.webp?v=1778366873"},{"product_id":"engenius-durafon-1x-replacement-battery-37v-1800mah-li-ion","title":"EnGenius RB-SP922-L DuraFon 1x Compatible Battery 3.7V 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEnGenius DuraFon 1x \/ 4x Series — 3.7V Li-ion Replacement Battery (RB-SP922-L)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1800mAh Li-ion battery replaces part number RB-SP922-L in the EnGenius DuraFon 1x, DuraFon 4x, DuraFon Pro, and Durawalkie handsets. It slots into the handset battery bay and connects to the same BMS interface as the factory pack. Capacity figures come from the product data — 1800mAh \/ 6.66Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDuraFon platform compatibility:\u003c\/strong\u003e\n    The 1x, 4x, Pro, and Durawalkie handsets share the same battery bay dimensions, connector pinout, and BMS handshake — that is why one pack covers all four. Swapping between models does not require any firmware or pairing change on the battery side.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack on a DuraFon handset and confirmed the BMS accepted charge from the base station cradle on the first insertion. Voltage held at 3.7V nominal through multiple charge cycles with no cutoff errors logged.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Place the handset in the base station cradle immediately after fitting this battery and leave it for a full 16 hours before taking the handset off the base. Li-ion packs shipped in partial charge state need a complete slow charge to register accurate capacity with the handset fuel gauge.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than expected in the first week after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA fresh Li-ion pack often under-reports capacity for the first three to five charge cycles because the handset fuel gauge is still calibrating against the new cell. The gauge was tuned to the discharge curve of the old, worn pack — it needs a few full charge-discharge cycles to relearn. Do not judge the battery on the first two days. Run the handset down to the low-battery warning, return it to the base, and repeat this three to five times to let the gauge settle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station charge light not activating after inserting handset\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen a Li-ion pack has been in storage, its resting voltage can drop low enough that the base station charge circuit does not recognise it as a valid battery. The base looks for a voltage above a minimum acceptance threshold before starting the charge cycle. Remove the handset, wait 10 seconds, and re-seat it firmly — the cradle contacts sometimes need a clean connection to trigger the charge circuit. If the light still does not activate, check that the contacts on both the handset and the base are free of debris and that the resting voltage of the pack reads at least 3.0V with a multimeter before returning it.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339876991066,"sku":"BWCS-EGX100CL-1","price":37.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339877023834,"sku":"BWCS-EGX100CL-2","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339877056602,"sku":"BWCS-EGX100CL-3","price":48.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-EGX100CL-1.webp?v=1778366844"},{"product_id":"huawei-f530-replacement-battery-37v-1800mah-li-ion","title":"Huawei F530 Cordless Phone Compatible Battery 3.7V 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHuawei F530 \/ FP515H Series — 3.7V Li-ion Replacement Battery (HBMAAF \/ HBL5AF)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1800mAh Li-ion battery for Huawei cordless DECT handsets including the F530, FP515H, F501, and F516. It replaces OEM part numbers HBMAAF and HBL5AF. Fit the battery and the handset returns to normal operation on its existing base station.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eF530 and FP515H series compatibility:\u003c\/strong\u003e\n    These handsets share the same battery bay dimensions, connector pinout, and 3.7V charging circuit. One battery covers all models in this group 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 Huawei base station charge circuit. The BMS accepted the charge handshake without error, and voltage held steady at 3.7V nominal across full discharge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Li-ion cordless handsets:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full uninterrupted charge before making any calls. Huawei DECT handsets calibrate the fuel gauge on the first full charge cycle — interrupting it early can cause the battery indicator to misread capacity for several weeks.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRange dropping on the F530 after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDECT transmit power on the F530 is voltage-dependent. When a partially charged or partially degraded cell sags below roughly 3.5V under RF load, the handset reduces transmit power to stay within safe operating limits. This looks like poor range but the handset is working correctly. A full charge cycle brings cell voltage back up and restores normal transmit power across the full coverage area.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset not pairing with base after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery from a Huawei DECT handset cuts all power to the pairing memory on some firmware versions. When power is restored with the new cell, the handset may not reconnect to the base automatically. To re-pair, hold the handset's page or locate button for 5–10 seconds while the base is powered on — this triggers a fresh DECT registration. Check your base station model's manual for the exact button sequence, but the fix is a standard re-registration, not a fault with the battery.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339878629466,"sku":"BWCS-HUF530CL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339878662234,"sku":"BWCS-HUF530CL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339878695002,"sku":"BWCS-HUF530CL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HUF530CL-1.webp?v=1778366843"},{"product_id":"nec-mh240-replacement-battery-37v-1100mah-li-ion","title":"NEC MH240 Replacement Battery 3.7V 1100mAh Li-ion 690021","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNEC MH240 — 3.7V Li-ion Replacement Battery (690021)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 1100mAh Li-ion battery replaces the original NEC part 690021 in the MH240 cordless handset. It slots into the battery compartment and connects to the same terminals as the factory pack. Voltage and cell dimensions match the MH240 exactly — 55.60 x 36.00 x 5.60mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMH240 handset fit:\u003c\/strong\u003e\n    The MH240 base station charges via contact pins on the handset cradle. This cell matches the voltage rail and physical footprint so the charging circuit sees the same load profile as the original pack.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery on the MH240 handset and confirmed the BMS accepted charge from the base station without error codes. Voltage held steady through standby and active call draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Li-ion cordless handsets:\u003c\/strong\u003e\n    Place the MH240 in its base immediately after fitting this battery and leave it for a full uninterrupted charge before use. Li-ion cells shipped in storage state can read low voltage — the base station charger needs a complete cycle to calibrate the displayed charge indicator correctly.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than expected after fitting the 690021 replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells arrive partially discharged from storage, typically around 3.0–3.2V. If you start using the handset before a full charge cycle completes, the usable capacity is lower than rated. The MH240 charge circuit also monitors voltage slope — an incomplete first charge means the base station may terminate charge early. Run two full charge-and-use cycles to let the pack reach its rated 1100mAh capacity.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMH240 handset not pairing with base after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery from a DECT handset clears volatile memory on some models, including stored pairing data. The MH240 may show an unregistered or searching status on the display after the swap. Re-register the handset using the base station registration button — hold it for three seconds until the base enters pairing mode, then follow the on-screen prompt on the handset. Once paired, the handset should connect within 30 seconds.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339879579738,"sku":"BWCS-NEH240CL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339879612506,"sku":"BWCS-NEH240CL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339879645274,"sku":"BWCS-NEH240CL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NEH240CL-1.webp?v=1778366873"},{"product_id":"shoretel-ip930d-replacement-battery-37v-1200mah-li-ion","title":"Shoretel IP930D Cordless Phone Compatible Battery 3.7V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eShoretel IP930D — 3.7V Li-ion Replacement Battery (300-1032)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1200mAh Li-ion battery for the Shoretel IP930D cordless DECT handset. It replaces OEM part numbers 300-1032, SH-10450, and 10000058. If your IP930D is no longer holding a charge through a full workday, this is a direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIP930D handset fit:\u003c\/strong\u003e\n    The IP930D uses a slim single-cell Li-ion pack at 3.7V nominal. The connector orientation and BMS handshake match the original Shoretel pack — the base station communicates charge state through the handset, so voltage tolerance matters. This cell sits within that window.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge cycles on the IP930D platform and confirmed the BMS accepted the cell without triggering a fault state. Charge termination voltage landed at 4.18V — within the OEM spec range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle charge on the IP930D:\u003c\/strong\u003e\n    After installing, seat the handset in the base and leave it for a full charge before using the handset off-dock. Li-ion cells shipped in storage state need a complete initial charge cycle to allow the BMS to calibrate the capacity gauge accurately.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than rated after fitting a new IP930D battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell shipped in low-charge storage state will read low capacity on the first few cycles. The BMS in the IP930D calibrates its fuel gauge over actual charge and discharge events. Run two to three full charge-to-discharge cycles before judging the battery's real capacity. If talk time is still short after that, check the handset firmware — some IP930D units had software bugs that caused aggressive power management misreads.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eIP930D not pairing with the base station after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery from a DECT handset cuts power entirely, which can wipe the handset's pairing registration in volatile memory. The IP930D may not re-pair automatically when power is restored. To fix this, use the base station's re-registration procedure — typically a long-press of the page\/find button on the base while the handset is off-dock. Once the handset shows the extension number, pairing is restored.\u003c\/p\u003e\n\u003c\/div\u003e\n\n---","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339880104026,"sku":"BWCS-SHP930CL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339880136794,"sku":"BWCS-SHP930CL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339880169562,"sku":"BWCS-SHP930CL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SHP930CL-1.webp?v=1778366872"},{"product_id":"yealink-w53-replacement-battery-37v-900mah-li-ion","title":"Yealink W53 Cordless Phone Compatible Battery 3.7V 900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eYealink W53 Series — 3.7V Li-ion Replacement Battery (W53-BATT)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 900mAh Li-ion battery for the Yealink W53 cordless DECT handset. It fits the W53, W53h, W53P, W71H, and compatible handsets in the same family. Swap it in when the original cell no longer holds a useful charge through a standard workday.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eW53 handset family compatibility:\u003c\/strong\u003e\n    The W53, W53h, W53P, and W71H handsets share the same battery bay dimensions and connector pinout. The BMS in each handset reads cell voltage on the same logic rail, so one battery works across the group without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell in a W53h handset and confirmed the BMS accepted the pack without fault codes. Charge termination triggered at the correct cutoff voltage, and standby draw remained within normal range across three full cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    After fitting this battery, seat the handset in the base and leave it for a full charge before using it. The W53 base station uses a trickle-charge profile — interrupting the first charge cycle early can cause the handset to under-report remaining capacity for several subsequent cycles.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the W53 handset loses DECT range when battery voltage sags\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe W53 handset adjusts RF transmit power based on available cell voltage. When an aged or partially discharged battery drops below approximately 3.5V under load, the handset cannot sustain full transmit power. The result is shorter effective range and more frequent dropouts, particularly when the user is away from the base. A fresh cell at rated voltage restores the transmit headroom the radio needs to hold a stable link at distance.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset not re-pairing to the base after battery replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eSome DECT handsets in the W53 family lose their base pairing record when battery power is fully interrupted during a swap. The handset powers back on but fails to register with the base, showing no line or a searching indicator. This is not a battery fault — the pairing data is stored in volatile memory that clears without power. Re-register the handset through the base station menu: on the W53P base, navigate to Settings → Account → Register Handset and follow the on-screen prompt.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339880464474,"sku":"BWCS-YKW530CL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339880497242,"sku":"BWCS-YKW530CL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339880530010,"sku":"BWCS-YKW530CL-3","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-YKW530CL-1.webp?v=1778366873"},{"product_id":"cisco-ccp-mic-wrls-s-us-replacement-battery-37v-500mah-li-polymer","title":"Cisco CCP-MIC-WRLS-S-US 3.7V Li-Polymer Compatible Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCisco CCP-MIC-WRLS-S-US \/ Unified IP Conference Phone 8831 — 3.7V Li-Polymer Replacement Battery (74-111509-01)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 500mAh (1.85Wh) lithium-polymer cell replaces the rechargeable battery in the Cisco CCP-MIC-WRLS-S-US wireless microphone transmitter. It also fits the CP-MIC-WRLS unit and the Unified IP Conference Phone 8831 and 8831 Daisy Chain Kit configurations. OEM part numbers covered: 74-111509-01, E472248, and 4500044-00.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e8831 wireless mic ecosystem fit:\u003c\/strong\u003e\n    The CCP-MIC-WRLS-S-US and CP-MIC-WRLS transmitters share the same 3.7V Li-Polymer cell, connector pinout, and BMS communication protocol across the 8831 conference phone platform — one battery SKU covers the full wireless mic range in that system.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell in a CCP-MIC-WRLS-S-US transmitter unit. The BMS accepted the pack without error, completed a charge cycle through the base cradle, and reported battery status correctly to the 8831 host phone.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Place the wireless mic transmitter in its charging cradle and leave it undisturbed for a full charge cycle before use — Li-Polymer cells shipped in partial-charge storage state need one complete cycle to calibrate the host system's fuel gauge accurately.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the 8831 wireless mic shows a low-battery warning immediately after a new cell is installed\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe 8831 conference phone reads battery state-of-charge from the transmitter's BMS, not from raw voltage alone. A new Li-Polymer cell shipped at storage voltage (typically 3.5–3.6V) sits below the BMS's \"full\" threshold, so the host phone logs it as low or unknown. One complete charge cycle through the cradle resets the BMS register and clears the warning. After that cycle, the status indicator reports correctly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWireless mic transmitter not recognised by the 8831 base after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the battery cuts all power to the transmitter, which can erase the DECT pairing record stored in volatile memory on some firmware versions. When the 8831 base no longer sees the mic, it's usually a lost pairing — not a faulty cell. Re-seat the transmitter in the cradle, allow it to charge to at least 3.7V, then re-run the pairing procedure from the 8831 phone's admin menu. The base should detect the transmitter within 60 seconds of initiating the scan.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339880562778,"sku":"BWCS-CIP901CL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339880595546,"sku":"BWCS-CIP901CL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339880628314,"sku":"BWCS-CIP901CL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CIP901CL-1.webp?v=1778366843"},{"product_id":"polycom-spectralink-8400-replacement-battery-37v-1800mah-li-polymer","title":"Polycom Spectralink 8400 Replacement Battery 3.7V 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePolycom Spectralink 8400 Series — 3.7V Li-Polymer Replacement Battery (1520-37214-001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1800mAh Li-Polymer battery replaces OEM part 1520-37214-001 in the Polycom Spectralink 8400, 8450, 8452, and RS657 wireless handsets. These are enterprise DECT handsets used in hospital, retail, and warehouse environments. Capacity is 1800mAh (6.66Wh) — matching the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSpectralink 8400 series compatibility:\u003c\/strong\u003e\n    The 8400, 8450, 8452, and RS657 share the same battery bay geometry, connector pinout, and voltage rail. One cell fits all four handsets without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the Spectralink 8452. The BMS accepted the charge handshake from the base station on first dock, and the protection circuit tripped correctly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on Spectralink handsets:\u003c\/strong\u003e\n    Li-Polymer cells in these handsets arrive partially discharged from storage. Dock the handset in the base immediately after installation and leave it charging for a full charge cycle before use. Skipping this step can cause the handset to report lower capacity than rated for the first few sessions.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than rated after battery swap in the 8400 series\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells shipped in partial-charge state do not always reach full capacity on the first charge cycle. The Spectralink base station terminates charge based on voltage, not elapsed time, so a cold cell may not fully saturate on the first dock. Run two to three full charge-and-discharge cycles to allow the cell to stabilise at its rated 1800mAh. After conditioning, the handset's battery indicator should reflect accurate remaining capacity.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station charge light stays red or shows error after installing a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-Polymer cell stored for several months can sit below the base station's minimum acceptance voltage. The charger circuit reads the cell as faulty and refuses to initiate a full charge cycle. To recover, place the handset in the base for at least 30 minutes without removing it — most Spectralink bases will trickle charge the cell up to the acceptance threshold (around 3.0V) before switching to normal charge mode. If the red light persists beyond 45 minutes, check that the handset is fully seated and the contacts are clean.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339880693850,"sku":"BWCS-SPT845CL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339880726618,"sku":"BWCS-SPT845CL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339880759386,"sku":"BWCS-SPT845CL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SPT845CL-1.webp?v=1778366873"},{"product_id":"spectralink-8400-replacement-battery-37v-1800mah-li-polymer","title":"SpectraLink 8400 Cordless Phone Compatible Battery 3.7V 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSpectraLink 8400 Series — 3.7V Li-Polymer Replacement Battery (1520-37214-001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1800mAh Li-Polymer battery replaces the original pack in SpectraLink 8400, 8450, 8452, and RS657 cordless handsets. These are DECT phones used in enterprise wireless environments — hospitals, warehouses, and office campuses. When the original battery no longer holds a charge, this replacement restores the handset to full operation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e8400, 8450, 8452, and RS657 compatibility:\u003c\/strong\u003e\n    These four models share the same Li-Polymer cell format, voltage rail, and connector spec. The BMS in each handset communicates with the pack over the same charge circuit, so one battery covers all four variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through the full charge cycle on a SpectraLink 8450 handset. The BMS accepted the pack immediately, completed a full charge without interruption, and the protection circuit responded correctly to both over-voltage and under-voltage thresholds.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Li-Polymer handsets:\u003c\/strong\u003e\n    Place the handset in the base immediately after installing this pack and allow a full uninterrupted charge before first use. Li-Polymer cells in DECT handsets are often shipped at partial charge — starting from a full state improves cycle consistency from day one.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy SpectraLink handsets lose range after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRF transmit power on DECT handsets draws directly from the battery voltage. When a degraded or partially charged Li-Polymer cell sags under that load, the handset reduces transmit power to protect the circuit. This makes range feel shorter even though the handset appears to be working normally. A fully charged, healthy pack maintains the voltage headroom the radio needs to hold full transmit power at the edge of coverage. If range improves after a full charge cycle, the battery was the cause.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset not pairing with the base after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving a battery from a DECT handset cuts all power to volatile memory. Some SpectraLink models store DECT pairing credentials in memory that is not retained without a power source, so the handset comes back up without a registered base. This is not a fault with the replacement battery. Re-register the handset at the base station using the standard DECT subscription process — on most SpectraLink systems, hold the handset close to the base, navigate to Settings, and initiate registration. The handset will reconnect once it receives the base station system ID.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339880824922,"sku":"BWCS-SPT845CL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339880857690,"sku":"BWCS-SPT845CL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339880890458,"sku":"BWCS-SPT845CL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SPT845CL-1.webp?v=1778366873"},{"product_id":"fritzfon-c6-replacement-battery-37v-1200mah-li-ion","title":"FRITZ!Fon C6 Replacement Battery 3.7V 1200mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eFRITZ!Fon C6 \/ X6 DECT Handset — 3.7V Li-ion Replacement Battery (312BAT026)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 1200mAh (4.44Wh) Li-ion cell replaces the original battery in the FRITZ!Fon C6, C6 DECT, and X6 cordless handsets. It matches the OEM dimensions of 53.00 × 33.90 × 5.70mm and connects directly to the handset's internal battery contacts. Part numbers 312BAT026, 312BAT030, and FRA051 all apply to this fit group.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eC6, C6 DECT, and X6 compatibility:\u003c\/strong\u003e\n    These three handset variants share the same battery bay dimensions, contact layout, and 3.7V supply rail. The BMS handshake requirements are identical across the group, so one cell covers all three 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 C6 handset. The BMS accepted the cell without error, held the voltage rail stable during active DECT transmission, and showed no cutoff events during standby draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after fitting:\u003c\/strong\u003e\n    Seat the handset in the base immediately after installing this cell and leave it there for a full 16 hours before first use. Li-ion cells shipped in partial-charge storage state benefit from a slow, complete first charge to calibrate the handset's battery indicator correctly.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than original battery after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell often reports fewer bars on the handset indicator for the first two or three charge cycles. This happens because the handset's fuel gauge is still calibrated to the worn curve of the old cell. Run two to three full charge-and-use cycles and the indicator recalibrates to the 1200mAh capacity of this cell. If talk time is still noticeably short after five cycles, check that the handset is seating fully in the base — a partial contact on the charging pins delivers a lower charge current and the cell never reaches a full 4.2V top-off.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset not pairing with base station after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eRemoving the old battery cuts power completely to the handset's DECT module, which can clear the pairing registration stored in volatile memory on some FRITZ!Fon models. The base station retains its side of the pairing, so the mismatch causes the handset to show no signal or a search loop. Re-register the handset using the base station's pairing button — on the FRITZ!Box base, hold the DECT button for two seconds until the LED flashes, then navigate to Connections on the handset and select Register Handset.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339881021530,"sku":"BWCS-FVC600CL-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339881054298,"sku":"BWCS-FVC600CL-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339881087066,"sku":"BWCS-FVC600CL-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-FVC600CL-1.webp?v=1778366843"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/collections\/BW-CS-NTL746CL-4_4ab903fb-0fb9-4fa4-8870-3ca52839da6f.webp?v=1780884250","url":"https:\/\/batteryweb.com\/collections\/cordless-phone.oembed?page=16","provider":"BatteryWeb","version":"1.0","type":"link"}