{"product_id":"vivo-iqoo-8-pro-replacement-battery-774v-2150mah-li-polymer","title":"Vivo IQOO 8 Pro B-S0 Compatible Battery 7.74V 2150mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eVivo IQOO 8 Pro \/ V2141A — 7.74V Li-Polymer Replacement Battery (B-S0)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.74V, 2150mAh (16.64Wh) Li-Polymer battery for the Vivo IQOO 8 Pro and V2141A smartphones. It replaces the original B-S0 cell when the device can no longer hold a charge or shuts down unexpectedly. Dimensions are 86.60 × 63.80 × 5.60mm — verify clearance before installation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIQOO 8 Pro \/ V2141A compatibility:\u003c\/strong\u003e\n    Both model numbers share the same PCB layout, connector pinout, and BMS handshake protocol. The B-S0 cell fits both without modification to the flex cable or charge IC wiring.\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 IQOO 8 Pro platform. The BMS accepted the cell without fault codes, and the charge IC stepped through its constant-current and constant-voltage phases as expected.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle recalibration tip:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one full discharge-to-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current fast charging pushes current into an uncalibrated state.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the IQOO 8 Pro reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe IQOO 8 Pro uses a coulomb counter-based fuel gauge IC that builds its model against the previous cell's charge curve. When a new cell goes in, that stored model is stale. The gauge reads voltage and current correctly, but maps them to the wrong state-of-charge percentages. One full discharge below 5% and a complete charge to 100% without interruption forces the IC to rebuild its internal model against the new cell's actual curve. Until that cycle completes, percentage readings will drift — typically over-reporting in the upper range and under-reporting near the bottom.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC's model diverges from the real cell voltage under load. The IQOO 8 Pro's modem and display draw enough current to drag cell voltage below the BMS cutoff threshold before the gauge registers a low-charge warning. The cell isn't faulty — the gauge model is mismatched. Run one uninterrupted full cycle with fast charging disabled, then check the shutdown voltage in the developer battery stats. After recalibration, the BMS cutoff should align with the gauge reading at approximately 3.4V per cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391858966618,"sku":"BWCS-BKQ810SL-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391858999386,"sku":"BWCS-BKQ810SL-2","price":44.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391859032154,"sku":"BWCS-BKQ810SL-3","price":48.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BKQ810SL-1.webp?v=1779142367","url":"https:\/\/batteryweb.com\/products\/vivo-iqoo-8-pro-replacement-battery-774v-2150mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}