{"product_id":"redmi-note-10-5g-replacement-battery-385v-4900mah-li-polymer","title":"Redmi Note 10 5G BN5A Compatible Battery 3.85V 4900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRedmi Note 10 5G \/ Note 10T Series — 3.85V Li-Polymer Replacement Battery (BN5A)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 4900mAh (18.87Wh) Li-Polymer cell built to the BN5A specification. It fits the Redmi Note 10 5G, Note 10T, Note 10T 5G, and the M2103K19G variant. If your original cell has degraded through repeated charge cycles and the phone no longer holds charge through a full day, this swap restores full cell capacity.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNote 10 5G and Note 10T compatibility:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The BN5A cell fits all listed variants without modification — the connector seats and locks the same way across the M2103K19G board revision.\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 10 5G board and confirmed the BMS accepted the cell, fast charge negotiation completed 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 install:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge down to shutdown, then charge fully to 100%. This gives the coulomb counter one clean reference cycle against the new cell's discharge curve before high-current charging resumes.\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 10 5G reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on this phone learns cell capacity by tracking coulombs in and out over time. When you swap to a new cell, the IC still holds the discharge curve it mapped to the worn original — so the percentage it displays is based on stale data. The phone may show 40% remaining and shut down, or jump from 60% to 20% under 5G modem load. One full discharge-to-shutdown followed by an uninterrupted charge to 100% resets the coulomb counter's reference points. After that single cycle, 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 fuel gauge IC is still calibrated to the old, degraded cell and does not account for the new cell's different voltage cliff profile. Under high-draw events — 5G modem handoff, screen at full brightness, or GPS active — the cell voltage dips briefly below the BMS protection threshold even though the reported percentage looks safe. The BMS reads actual cell voltage, not the OS percentage, and cuts power to protect the cell. Force a full discharge until the phone shuts itself off, then charge to 100% uninterrupted. After one complete cycle the fuel gauge recalibrates and the cutoff point drops back to the correct 3.0V floor.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391883280474,"sku":"BWCS-MUN100SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391883313242,"sku":"BWCS-MUN100SL-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391883346010,"sku":"BWCS-MUN100SL-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MUN100SL-1.webp?v=1779142479","url":"https:\/\/batteryweb.com\/products\/redmi-note-10-5g-replacement-battery-385v-4900mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}