{"product_id":"vivo-y75-replacement-battery-385v-2900mah-li-polymer","title":"Vivo Y75 Replacement Battery B-D5 3.85V 2900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eVivo Y75 Series — 3.85V Li-Polymer Replacement Battery (B-D5)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 2900mAh Li-Polymer replacement battery carrying OEM part number B-D5. It fits the Vivo Y75, Y75 Dual SIM, Y75 Dual SIM LTE, and Y75a. It replaces a degraded or damaged original cell to restore normal smartphone operation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eY75 series compatibility:\u003c\/strong\u003e\n    All listed Y75 variants share the same battery bay geometry, connector pinout, and BMS handshake protocol. The 76.30 × 59.14 × 4.02mm cell dimensions are consistent across the Y75, Y75 Dual SIM, Y75 Dual SIM LTE, and Y75a chassis.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the B-D5 cell through charge and discharge cycles on Y75 hardware. The BMS accepted the charge IC handshake without fault codes, and voltage held steady under simultaneous screen and modem load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    Disable fast charging for one complete discharge-charge cycle after installation. This allows the fuel gauge IC to build an accurate discharge curve against the new cell before high-current 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 Vivo Y75 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on the Y75 stores a discharge curve learned from the original cell over hundreds of cycles. When a new cell goes in, that stored curve no longer matches the actual cell chemistry, so the IC misreports state of charge. The fix is one full uninterrupted discharge down to automatic shutdown, followed by a full charge to 100%. After that cycle, the coulomb counter resets its baseline against the new cell and percentage readings stabilise.\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 cell voltage drops sharply under load — typically during LTE data bursts or peak screen brightness — faster than the fuel gauge IC predicted. The phone interprets the voltage cliff as a critical low and cuts power to protect the SoC. It is not a faulty cell. Run one full calibration cycle first, then retest. If shutdown still occurs below 3.6V under modem load, check that no background apps are spiking current draw during the event.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392026706010,"sku":"BWCS-BKY750SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392026738778,"sku":"BWCS-BKY750SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392026771546,"sku":"BWCS-BKY750SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BKY750SL-1.webp?v=1779143029","url":"https:\/\/batteryweb.com\/products\/vivo-y75-replacement-battery-385v-2900mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}