{"product_id":"nortel-t7406e-replacement-battery-36v-900mah-ni-mh","title":"Nortel T7406E Replacement Battery 3.6V 900mAh NT8B45AH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNortel T7406E \/ 81010 — 3.6V Ni-MH Replacement Battery (NT8B45AH)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 900mAh Ni-MH battery pack for the Nortel T7406E and 81010 cordless phone handsets. It replaces OEM part NT8B45AH and compatible cross-references including CPH-525 and 95AAAHC3BX. When the original pack can no longer hold a charge through a normal call, this swap restores the handset to working condition.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eT7406E and 81010 fitment:\u003c\/strong\u003e\n    Both models use the same 3.6V NiMH cell format, identical connector orientation, and the same base station charge circuit. One battery covers both handsets without any modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the T7406E base station charge circuit and confirmed the NiMH voltage rises correctly through the trickle and top-up phases. The BMS in the base accepted the pack without triggering a charge 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 first use. NiMH cells shipped in partial-discharge storage need a slow, uninterrupted first charge to reach rated 900mAh capacity — cutting it short locks in a lower ceiling for subsequent 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\"\u003eNiMH cells do not deliver full rated capacity on the first cycle out of the box. Storage causes partial self-discharge, and the cells need three to five full charge-discharge cycles before they reach 900mAh. If talk time is still noticeably short after five cycles, check that the handset is fully seated in the cradle — a tilted contact gives the base a false \"charged\" signal and cuts the charge phase early, leaving cells at around 3.3V instead of the full 3.6V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station shows no charge light or error light on a new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eBatteries sitting in warehouse storage can drop below 3.0V, which some T7406E base stations treat as an error condition rather than initiating a charge cycle. The base charge circuit expects a minimum voltage before it engages. Remove the handset, wait 30 seconds, then reseat it firmly — this resets the charge controller and usually triggers a fresh detection cycle. If the error persists, measure the battery terminals with a multimeter; a reading below 2.8V means the pack needs a slow external NiMH trickle charge at 90mA to bring it back above the base station's acceptance threshold before normal charging can begin.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339903959130,"sku":"BWCS-NTL740CL-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339903991898,"sku":"BWCS-NTL740CL-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339904024666,"sku":"BWCS-NTL740CL-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NTL740CL-1.webp?v=1778366945","url":"https:\/\/batteryweb.com\/products\/nortel-t7406e-replacement-battery-36v-900mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}