{"product_id":"vivo-iqoo-7-replacement-battery-774v-1950mah-li-polymer","title":"Vivo iQOO 7 B-P3 Replacement Battery 7.74V 1950mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eVivo IQOO 7 \/ V2049A — 7.74V Li-Polymer Replacement Battery (B-P3)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 1950mAh, 7.74V lithium-polymer cell that replaces the original B-P3 battery in the Vivo IQOO 7 (V2049A). It restores power to the processor, display, modem, and all onboard functions. Fit it when the original cell no longer holds a full charge, swells, or the phone shuts off unexpectedly under load.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIQOO 7 and V2049A compatibility:\u003c\/strong\u003e\n    Both model codes refer to the same hardware platform. They share the same battery bay dimensions (87.80 × 62.85 × 5.20mm), the same connector pinout, and the same BMS handshake protocol — so one cell covers both variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the IQOO 7 platform. The BMS accepted the cell without triggering protection cutoff, and the charge IC negotiated normally after the first full cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge protocol:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and complete one full discharge-charge cycle at standard rate. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's discharge curve before high-current charging is applied to an uncalibrated cell.\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 7 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC builds its percentage readings from a learned discharge curve stored from the original cell. When a new cell goes in, that stored curve no longer matches actual cell chemistry or internal resistance. The IC keeps estimating against outdated data until it recalibrates. One complete discharge-to-shutdown followed by a full charge resets the coulomb counter and aligns the gauge to the new cell.\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 modem or display pulls a high-current burst and the cell voltage drops below the BMS cutoff threshold — even though the reported percentage looks safe. On a freshly installed cell, the fuel gauge IC has not yet mapped the low-end voltage cliff for this specific cell's discharge curve. The phone reads 25% but the actual terminal voltage is already near 3.5V per cell under load. Run one complete cycle at standard charge rate first; the IC will then place the low-voltage cutoff point correctly and the shutdowns will stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391870238810,"sku":"BWCS-BKQ700SL-1","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391870271578,"sku":"BWCS-BKQ700SL-2","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391870304346,"sku":"BWCS-BKQ700SL-3","price":46.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BKQ700SL-1.webp?v=1779142413","url":"https:\/\/batteryweb.com\/products\/vivo-iqoo-7-replacement-battery-774v-1950mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}