{"product_id":"v-tech-80-5542-00-00-replacement-battery-36v-700mah-ni-mh","title":"V Tech 80-5542-00-00 Replacement Battery 3.6V 700mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eV Tech 80-5542-00-00 \/ 80-5543-00-00 — 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 V Tech cordless phone handsets. It fits the 80-5542-00-00 and 80-5543-00-00 models. The pack slots directly into the handset battery compartment and connects to the charging circuit via the original contacts.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e80-5542-00-00 and 80-5543-00-00 compatibility:\u003c\/strong\u003e\n    Both models use the same 3.6V three-cell Ni-MH configuration and share an identical connector footprint. The base station charging circuit on both reads cell voltage the same way, so one pack serves either handset 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 BMS accepted the charge handshake from the base station immediately, and cell voltage held steady across the full discharge curve with no premature cutoff.\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 the first use. Ni-MH cells in cordless phones need that slow initial charge to reach rated capacity — pulling it out early will leave the pack at roughly 60–70% of its 700mAh ceiling 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\"\u003eBase station charge light not activating on a new Ni-MH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eV Tech bases use a voltage-sensing circuit to confirm a battery is present before starting the charge cycle. A new Ni-MH pack that has sat in storage can drop below the threshold the base expects — typically around 3.0V — so the base never initiates charging. The fix is to let the handset sit in the cradle undisturbed for 30–60 minutes. The trickle current from the base will nudge the pack above the acceptance threshold and the charge indicator will activate on its own.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than the original battery for the first few uses\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells do not deliver full rated capacity straight out of the box. The chemistry requires three to five full charge-and-discharge cycles before the cells reach their 700mAh ceiling. During those early cycles, talk time will be noticeably shorter than what the original aged-but-conditioned pack delivered. Run three complete cycles — full charge, then use the handset until it signals low battery — and talk time will increase incrementally with each pass.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43340020351066,"sku":"BWCS-CPB1024-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43340020383834,"sku":"BWCS-CPB1024-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43340020416602,"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","url":"https:\/\/batteryweb.com\/products\/v-tech-80-5542-00-00-replacement-battery-36v-700mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}