{"product_id":"marshall-major-v-replacement-battery-38v-830mah-li-polymer","title":"Marshall Major V Replacement Battery 3.8V 830mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMarshall Major V — 3.8V Li-Polymer Replacement Battery (AHB632832)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.8V, 830mAh Li-Polymer cell replaces the original AHB632832 battery inside the Marshall Major V wireless over-ear headphones. It restores Bluetooth audio playback when the factory cell has degraded and no longer holds adequate charge. Dimensions are 34.30 × 28.00 × 6.60mm — confirm these against your existing cell before fitting.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMarshall Major V fit:\u003c\/strong\u003e\n    The Major V runs a single Li-Polymer cell at 3.8V. The AHB632832 part number matches the original cell's footprint, connector, and BMS communication protocol — the headphone's charge controller will recognise it without reconfiguration.\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 Major V platform. The BMS accepted the new pack cleanly, hit full charge voltage without fault flags, and held stable output under sustained Bluetooth audio draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-charge protocol for the Major V:\u003c\/strong\u003e\n    Charge the headphones to full via USB-C before the first listening session. The Major V's fuel-gauge IC calibrates its capacity estimate against a complete charge cycle — skip this and the battery indicator will read inaccurately from day one.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Major V cuts out during playback on a new battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA freshly installed Li-Polymer cell ships at storage voltage — typically 3.6–3.7V, not full charge. The Major V's BMS sets a low-voltage cutoff that can trip under the combined draw of the Bluetooth radio and audio amplifier before you expect it. This is not a faulty cell. One full charge cycle from storage voltage brings the cell to 4.2V and gives the BMS a proper baseline to work from.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery indicator stuck at full or dropping suddenly after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Major V uses a coulomb-counting fuel gauge that tracks charge state relative to a learned capacity profile. Swapping in a new cell resets that profile, so the indicator often reads incorrectly for the first few cycles. Run three complete charge-to-full, play-until-low cycles and the gauge recalibrates itself. After the third cycle the indicator should track normally across the full voltage range of 3.0V to 4.2V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43306857234522,"sku":"BWCS-MRM632SL-1","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43306857267290,"sku":"BWCS-MRM632SL-2","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43306857300058,"sku":"BWCS-MRM632SL-3","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MRM632SL_1.webp?v=1777768791","url":"https:\/\/batteryweb.com\/products\/marshall-major-v-replacement-battery-38v-830mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}