{"product_id":"bbk-vivo-iqoo-pro-replacement-battery-385v-4400mah-li-polymer","title":"B-H6 BBK VIVO iQOO Pro Compatible Battery 3.85V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBBK VIVO iQOO Pro Series — 3.85V Li-Polymer Replacement Battery (B-H6)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 4400mAh (16.94Wh) Li-Polymer battery carrying OEM part number B-H6. It fits the VIVO iQOO Pro, VIVO iQOO Pro 5G, V1916, and V1916A. Install it when the original cell no longer holds charge through a normal day of use.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eV1916 and V1916A coverage:\u003c\/strong\u003e\n    Both the standard iQOO Pro and the 5G variant (V1916A) share the same physical cell format, connector, and BMS handshake protocol — one B-H6 cell 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 ran this cell through charge and discharge cycles on a V1916A unit. The BMS accepted the charge IC handshake cleanly, held cell voltage above 3.6V under sustained screen and modem load, and tripped the protection circuit at the expected low-voltage cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst cycle fast-charge protocol:\u003c\/strong\u003e\n    On the first full cycle after fitting this cell, disable VIVO's Super FlashCharge in Settings → Battery. Run one complete discharge and standard charge first. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into an uncalibrated coulomb counter.\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 Pro reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on the V1916 board stores a learned discharge curve from the original cell. When a new cell goes in, that stored curve no longer matches actual cell chemistry, so the percentage reading drifts — often showing full charge at 4.1V or cutting the display to zero before the BMS actually trips. The fix is one full uninterrupted discharge down to automatic shutdown followed by a complete charge to 100% with the screen off. After that cycle, the coulomb counter resets its reference points against the new cell and percentage reporting stabilises.\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 is a voltage cliff failure, not a capacity failure. Under combined 5G modem, display, and CPU load, the cell momentarily drops below the BMS cutoff voltage — typically around 3.2V — even though the fuel gauge still shows charge remaining. The original cell masks this because its internal resistance is calibrated into the system; a fresh cell with slightly different impedance triggers the cutoff earlier until the gauge IC recalibrates. Run the first-cycle discharge protocol above and confirm the shutdown stops occurring above 15%. If it persists past two full cycles, check that the battery connector is fully seated — a partially engaged connector raises contact resistance and accelerates voltage sag under load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391946162266,"sku":"BWCS-BYQ916SL-1","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391946195034,"sku":"BWCS-BYQ916SL-2","price":37.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391946227802,"sku":"BWCS-BYQ916SL-3","price":41.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BYQ916SL-1.webp?v=1779142719","url":"https:\/\/batteryweb.com\/products\/bbk-vivo-iqoo-pro-replacement-battery-385v-4400mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}