{"product_id":"xiaomi-redmi-note-11-pro-replacement-battery-774v-2150mah-li-polymer","title":"Xiaomi BP47 Redmi Note 11 Pro+ Replacement Battery 7.74V 2150mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eXiaomi Redmi Note 11 Pro+ — 7.74V Li-Polymer Replacement Battery (BP47)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe BP47 is a 7.74V, 2150mAh Li-Polymer cell for the Xiaomi Redmi Note 11 Pro+ and Redmi Note 11i Hypercharge 5G Standard Edition. It replaces the original cell when capacity has degraded to the point where the device shuts down early or holds charge poorly. Compatibility extends across variants 21091116UC and 21091116UG.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-variant fit:\u003c\/strong\u003e\n    The Pro+, 11i Hypercharge, and the 21091116UC\/UG variants share the same battery bay dimensions, connector pinout, and BMS handshake — one cell covers all of them without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on a Redmi Note 11 Pro+ unit, confirming the BMS accepted the cell, fast-charge handshake completed after the first calibration cycle, and the fuel gauge IC tracked voltage within expected tolerance.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after swap:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC build an accurate discharge curve map against the new cell before high-current charging pushes load 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\"\u003eSudden shutdown at 20–30% on the BP47 replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity fault. The Redmi Note 11 Pro+ draws heavy current during simultaneous modem activity and screen-on load. A new cell not yet calibrated to the fuel gauge IC can report 25% remaining while the actual resting voltage has already dropped below what the system can sustain under that load. The phone cuts out as a protection response, not a BMS defect. Run one full discharge to near-shutdown and a full charge to 100% without interruption — the coulomb counter resets and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not triggering on the first cycle after installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Redmi Note 11 Pro+'s charge IC negotiates fast-charge protocol against the BMS state on the new cell. On the first cycle, the BMS may present a state-of-charge value the charge IC treats as outside fast-charge entry conditions, so it defaults to standard 5V charging. This is not a charger fault or a defective cell. Charge the phone once at standard rate to 100%, then unplug and replug — the BMS state updates and fast charge resumes at the next session. Confirm fast charge is active by checking Settings → Battery → Charging and verifying the turbo or fast charge indicator appears.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391840190554,"sku":"BWCS-MUR470SL-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391840223322,"sku":"BWCS-MUR470SL-2","price":44.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391840256090,"sku":"BWCS-MUR470SL-3","price":48.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MUR470SL-1.webp?v=1779142367","url":"https:\/\/batteryweb.com\/products\/xiaomi-redmi-note-11-pro-replacement-battery-774v-2150mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}