{"product_id":"redmi-note-6-pro-replacement-battery-385v-3900mah-li-polymer","title":"Redmi Note 6 Pro BN48 Compatible Battery 3.85V 3900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRedmi Note 6 Pro — 3.85V Li-Polymer Replacement Battery (BN48)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe BN48 is a 3.85V, 3900mAh Li-Polymer cell that fits the Redmi Note 6 Pro and Note 6 Pro Dual SIM, including M1806E7TE and M1806E7TC variants. It replaces the original cell when capacity has faded or the phone no longer holds a usable charge. Total energy is 15.02Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNote 6 Pro and Dual SIM compatibility:\u003c\/strong\u003e\n    Both the single and Dual SIM Note 6 Pro variants use the same battery bay, connector pinout, and BMS handshake — the BN48 cell fits without modification across all listed model numbers including M1806E7TE and M1806E7TC.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a Note 6 Pro unit and confirmed the BMS accepted the charge handshake correctly, held voltage above 3.6V under display and modem load, and registered cell capacity accurately through the fuel gauge IC after the first full discharge-charge cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fuel gauge calibration:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-charge cycle at standard rate. This gives the fuel gauge IC an accurate discharge curve for the new cell before high-current charging begins against 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 Note 6 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 Note 6 Pro stores a learned discharge curve from the original cell. When a new BN48 cell goes in, that stored curve no longer matches the actual voltage-to-capacity relationship of the fresh cell. The IC then maps the wrong percentage to the real voltage at any given load. One full discharge down to automatic shutdown, followed by a charge to 100%, forces the IC to re-learn the curve against the new cell. After that cycle, percentage reporting stabilises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement BN48\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops sharply under high-draw loads — modem transmission, screen at full brightness, or GPS — faster than the fuel gauge IC predicted. The phone's protection threshold trips and shuts down even though the reported percentage looks safe. The root cause is the fuel gauge IC still operating on the old cell's profile before recalibration. Run one full discharge-charge cycle, then confirm the phone reads above 3.65V at the 20% mark during normal use.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392012288090,"sku":"BWCS-MUM610SL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392012320858,"sku":"BWCS-MUM610SL-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392012353626,"sku":"BWCS-MUM610SL-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MUM610SL-1.webp?v=1779142904","url":"https:\/\/batteryweb.com\/products\/redmi-note-6-pro-replacement-battery-385v-3900mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}