{"product_id":"nec-g266-replacement-battery-37v-1200mah-li-ion","title":"NEC G266 Compatible Battery 3.7V 1200mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNEC G266 \/ G277 \/ G355 Series — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1200mAh Li-ion battery fits NEC cordless handsets across the G266, G277, G277 DECT, and G355 series, plus additional compatible models. It replaces the original cell when the handset no longer holds a useful charge between base charges. Dimensions are 53.20 × 34.00 × 5.70mm — confirm against your existing battery before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eG-series handset compatibility:\u003c\/strong\u003e\n    These NEC models share the same 3.7V Li-ion cell format, connector pinout, and physical footprint. One battery covers the full range without modification.\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 bench. The BMS held charge termination correctly and showed no false-full cutoff at low state-of-charge after storage.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Place the handset in the base and leave it for a full uninterrupted charge cycle before using it. Li-ion cells shipped in partial state-of-charge benefit from one complete charge before the first call.\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 expected after fitting this battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA Li-ion cell shipped at storage charge — around 3.6–3.7V — hasn't been through a full cycle yet. The handset's fuel gauge or charge circuit may underestimate actual capacity until one complete charge-discharge cycle runs. After the first full charge from flat, rated capacity becomes available. If talk time stays short after three cycles, check that the handset is fully seated in the base cradle and the charging contacts are clean.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHandset loses pairing with base after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome NEC DECT handsets store pairing data in volatile memory that resets when power is fully removed during a battery swap. The handset wakes up after the swap as an unregistered unit. Re-register it through the base station menu — on most G-series models this is done by holding the FIND\/PAGE button on the base for 3–4 seconds until the handset enters registration mode. Once paired, the handset operates normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339910021210,"sku":"BWCS-AY4020CL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339910053978,"sku":"BWCS-AY4020CL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339910086746,"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\/nec-g266-replacement-battery-37v-1200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}