{"product_id":"att-27910-replacement-battery-36v-700mah-ni-mh","title":"AT\u0026T BT27910 Cordless Phone Compatible Battery 3.6V 700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAT\u0026amp;T 27910 \/ E1112 Series — 3.6V Ni-MH Replacement Battery (BT27910)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 700mAh Ni-MH battery pack for the AT\u0026amp;T 27910 cordless phone handset and related models in this family. It replaces OEM part numbers BT27910, BT5633, BT6823, 89-0099-00, and 80-5848-00-00. When the original pack no longer holds a charge, this unit restores full handset function.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCross-model fit — 27910, E1112, and related handsets:\u003c\/strong\u003e\n    These handsets share the same three-cell Ni-MH pack format, voltage rail, and connector pinout. A single part number covers the full group because the base station charging circuit applies the same trickle and termination profile across all of them.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack on the 27910 handset and confirmed the base station accepted the charge state without flagging an error light. The BMS held voltage within the expected 3.6V nominal band through full discharge and recharge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for Ni-MH handset packs:\u003c\/strong\u003e\n    After installing, seat the handset in the base for a continuous 16-hour charge before first use. Ni-MH cells in cordless phone packs do not reach rated capacity from a partial charge — the slow initial cycle is what conditions the cells to deliver their full 700mAh.\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\"\u003eNew Ni-MH cells ship in a partially discharged state and need three to five full charge-discharge cycles before they reach rated capacity. On the first cycle, actual talk time will be noticeably shorter than the original pack at its best. Each subsequent full cycle conditions the cells further. By cycle four or five, the pack should be performing at or near its 700mAh rated output.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station charge light not activating on a new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAT\u0026amp;T base stations use a voltage threshold to confirm a battery is present and ready to charge. A new Ni-MH pack that has self-discharged in storage can drop low enough that the base station does not recognise it. Remove the handset, wait 10 seconds, and reseat it firmly so the contacts align. If the error persists, try a 30-second press of the reset button on the base — this re-initialises the charge controller and usually clears a false no-battery detection at voltages above 3.0V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43340016320602,"sku":"BWCS-CPB8011-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43340016353370,"sku":"BWCS-CPB8011-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43340016386138,"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\/att-27910-replacement-battery-36v-700mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}