{"product_id":"jbl-live-760nc-replacement-battery-38v-500mah-li-polymer","title":"JBL Live 760NC Replacement Battery 3.8V 500mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eJBL Live 760NC \/ Tune 760NC — 3.8V Li-Polymer Replacement Battery (HPT693331)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.8V, 500mAh Li-Polymer cell replaces the internal battery in the JBL Live 760NC and Tune 760NC wireless over-ear headphones. It restores power to Bluetooth audio, active noise cancellation, and onboard controls when the original cell has degraded or failed. Dimensions are 32.30 × 33.00 × 6.70mm — verify against the existing cell before fitting.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLive 760NC and Tune 760NC compatibility:\u003c\/strong\u003e\n    Both models share the same internal chassis layout, connector pinout, and BMS handshake protocol, which is why a single cell covers both. Voltage tolerance across the two platforms is identical at 3.8V nominal.\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 a Live 760NC unit and confirmed BMS handshake completion, stable cutoff at low voltage threshold, and no thermal anomaly under sustained ANC-plus-Bluetooth draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for ANC headphones:\u003c\/strong\u003e\n    After fitting, run the headset through one full charge-to-discharge cycle with ANC active. The noise-cancellation DSP draws a separate power rail — a partial cycle leaves that rail calibration incomplete, which causes the battery indicator to read inaccurately until a full cycle is logged.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Live 760NC cuts out mid-call on a degraded cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Live 760NC runs Bluetooth audio, ANC processing, and the microphone circuit simultaneously during calls. Combined draw spikes briefly when the ANC chip adjusts to ambient noise changes. A degraded or partially charged cell cannot sustain that spike without voltage dropping below the BMS cutoff threshold, which triggers an immediate shutdown. A fresh cell at full charge holds the voltage rail stable through those transient peaks.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery indicator stuck at full after replacement but headset shuts off early\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA replacement cell shipped at storage voltage — typically around 3.6–3.7V — sits close enough to nominal that the headset firmware reads it as full. The fuel gauge does not recalibrate until a complete charge-discharge cycle is completed. Until that cycle runs, the indicator stays high and then drops sharply before the actual low-voltage cutoff kicks in. Charge the headset fully, use it until it powers off on its own, then charge again — the indicator will track accurately from that point.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428095590490,"sku":"BWCS-JBT760SL-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428095623258,"sku":"BWCS-JBT760SL-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428095656026,"sku":"BWCS-JBT760SL-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-JBT760SL-1.webp?v=1779934061","url":"https:\/\/batteryweb.com\/products\/jbl-live-760nc-replacement-battery-38v-500mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}