{"product_id":"xiaomi-mi-8-explorer-replacement-battery-385v-2900mah-li-polymer","title":"Xiaomi Mi 8 Explorer BM3F Replacement Battery 3.85V 2900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eXiaomi Mi 8 Explorer Series — 3.85V Li-Polymer Replacement Battery (BM3F)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 2900mAh (11.17Wh) Li-Polymer battery for the Xiaomi Mi 8 Explorer, Mi 8 Explorer Edition, and Mi 8 Explorer Edition Dual SIM TD-LTE. It replaces the original BM3F cell when the factory battery has degraded, stopped holding charge, or failed outright. Voltage and footprint match the OEM spec — 80.00 x 65.00 x 3.25mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMi 8 Explorer and Explorer Edition compatibility:\u003c\/strong\u003e\n    All three fit models use the same BM3F cell format, connector pin-out, and BMS handshake protocol. The voltage rail feeding the Snapdragon 845 and the under-display fingerprint sensor is identical across variants, so one cell covers the full Explorer lineup.\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 Mi 8 Explorer platform. The BMS accepted the cell without error flags, fast-charge negotiation re-established on the second cycle, and the fuel gauge IC tracked state-of-charge without erratic jumps after one full calibration cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-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 cell. Skip this step and percentage readings will drift for several cycles.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the Mi 8 Explorer after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage-cliff failure, not a capacity problem. When the modem fires a transmission burst or the AMOLED panel peaks brightness, instantaneous current draw spikes sharply. A new cell the fuel gauge IC hasn't profiled yet can dip below the BMS cutoff voltage under that load even while showing 25% remaining. The phone shuts down to protect the cell. One full discharge-charge cycle at standard charging speed recalibrates the coulomb counter and moves the cutoff trigger to the correct state-of-charge point.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not negotiating after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Mi 8 Explorer's charge IC checks BMS handshake data on the first charge after a cell swap. If the new cell presents higher internal impedance than the stored profile expects, the charge IC defaults to standard 5V\/1A input rather than stepping up to fast-charge voltage. This is a protection response, not a fault. Run one full standard charge cycle, let the charge IC log the new cell's impedance baseline, and fast charging will re-engage. Confirm by checking the charging status notification — it should display \"Fast charging\" at the start of the second charge cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391998492762,"sku":"BWCS-MUM810SL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391998525530,"sku":"BWCS-MUM810SL-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391998558298,"sku":"BWCS-MUM810SL-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MUM810SL-1.webp?v=1779142856","url":"https:\/\/batteryweb.com\/products\/xiaomi-mi-8-explorer-replacement-battery-385v-2900mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}