{"product_id":"rtx-8630-replacement-battery-37v-1200mah-li-ion","title":"RTX 8630 Cordless Phone Compatible Battery 3.7V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRTX 8630 \/ 8830 — 3.7V Li-ion Replacement Battery (10000058)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1200mAh Li-ion battery replaces the OEM pack in RTX 8630 and 8830 cordless DECT phone handsets. It matches the original cell chemistry, voltage, and connector so the handset charges normally in its base. Capacity figures come from the product data — 4.44Wh total energy.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e8630 and 8830 shared platform:\u003c\/strong\u003e\n    Both handsets run the same 3.7V Li-ion cell with identical connector pinout and BMS communication protocol, which is why one part number covers both models.\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 8630 base station. The BMS accepted charge without fault codes and held voltage within spec across full discharge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on DECT Li-ion handsets:\u003c\/strong\u003e\n    After fitting the new cell, seat the handset in the base and leave it undisturbed for a full charge cycle before first call. RTX DECT handsets read cell state from the BMS — interrupting the initial charge can cause the handset to underestimate capacity and display a low-battery alert prematurely.\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  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells ship in a partially discharged state for transport safety. The BMS in the 8630 and 8830 tracks capacity based on charge history, and a cell with no prior cycles gives the BMS incomplete data. Run two or three full charge-to-discharge cycles and the BMS recalibrates its capacity estimate. After cycle three, talk time should track the rated figure.\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 handset, including the register that stores the base station pairing data. Some RTX DECT models write pairing to volatile memory backed by the cell — pull the cell and the pairing clears. Re-register the handset from the base station menu: hold the paging button on the base for five seconds until the handset prompts for PIN entry, then enter the default code (usually 0000) to complete registration.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339915853914,"sku":"BWCS-AY4020CL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339915886682,"sku":"BWCS-AY4020CL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339915919450,"sku":"BWCS-AY4020CL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AY4020CL_1.webp?v=1778366906","url":"https:\/\/batteryweb.com\/products\/rtx-8630-replacement-battery-37v-1200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}