{"product_id":"ge-21009ge3-replacement-battery-36v-700mah-ni-mh","title":"GE 21009GE3 Cordless Phone Replacement Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGE 21009GE3 \/ 21028GE3 Series — 3.6V Ni-MH Replacement Battery (GP85AAALH3BMJ)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V 700mAh Ni-MH replacement battery for GE cordless phone handsets. It fits the 21009GE3, 21018GE3, 21028GE3, 21098, and over 100 additional GE handset models. The OEM part numbers covered are GP85AAALH3BMJ and GP80AAALH3BMJ.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-model fit across the GE 210-series handsets:\u003c\/strong\u003e\n    These handsets share the same 3-cell AAA Ni-MH pack configuration, identical connector pinout, and the same base station charging circuit — so one battery covers the entire 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 GE DECT handset hardware. The BMS accepted full base-station current without triggering a charge fault, and voltage held within spec across all test 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 ship partially discharged from storage — a slow initial charge lets each cell balance and reach rated 700mAh capacity.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the base station shows a charging error on a brand-new Ni-MH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eGE base stations use a delta-V detection circuit to confirm a valid Ni-MH pack is present before committing charge current. A new battery fresh from storage can sit below 3.0V — low enough that the base rejects it as a fault rather than a depleted cell. This is not a defective battery or a faulty base. Place the handset in the cradle, wait 10–15 minutes, then remove and reseat it. The base will re-check voltage and, once it clears the acceptance threshold near 3.2V, resume normal charging.\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 typically reach full capacity after three to five full charge-discharge cycles. If talk time feels short immediately after swapping the battery, that is expected behaviour, not a fault. Use the handset until it prompts a low-battery warning, return it to the base for a full charge, and repeat for at least three cycles. By cycle four or five, capacity stabilises at the rated 700mAh.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43340016615514,"sku":"BWCS-CPB8011-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43340016648282,"sku":"BWCS-CPB8011-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43340016681050,"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","url":"https:\/\/batteryweb.com\/products\/ge-21009ge3-replacement-battery-36v-700mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}