{"product_id":"redmi-24115ra8ec-replacement-battery-385v-5600mah-li-polymer","title":"Redmi BM68 Replacement Battery 3.85V 5600mAh Note 12 Pro","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRedmi Note 14 Pro+ — 3.85V Li-Polymer Replacement Battery (BM68)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 5600mAh Li-Polymer replacement battery for the Redmi Note 14 Pro+ and related models (24115RA8EC, 24115RA8EG, 24115RA8EI). It slots in when the original BM68 cell has degraded, lost capacity, or failed to hold charge. Capacity is 21.56Wh — matching the OEM specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNote 14 Pro+ series compatibility:\u003c\/strong\u003e\n    The 24115RA8EC, EG, and EI variants share the same battery bay geometry, connector pinout, and BMS handshake protocol — all three accept the BM68 cell 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 charge and load on Note 14 Pro+ hardware. The BMS accepted the cell, reported state-of-charge correctly after one full cycle, and thermal cutoff thresholds held within spec under sustained display and modem load.\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 and run one complete discharge-to-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before proprietary fast-charge protocols push high current into an uncalibrated cell.\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 replacement BM68 cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC still holds the old cell's discharge curve in memory. The new cell's voltage drops faster under modem and screen load than the old curve predicts. When cell voltage falls below roughly 3.5V under load, the BMS trips before the OS can register the drop — the phone cuts out even though the percentage display still shows charge remaining. One full discharge-charge cycle without fast charging forces the coulomb counter to re-anchor to the new cell's actual voltage floor.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD or proprietary fast charge not triggering after installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn the first cycle after a cell swap, the charge IC may default to standard 5V charging and refuse to negotiate fast-charge protocols. This is a BMS self-protection behaviour — the controller won't accept elevated charge current until it has confirmed the new cell's internal resistance profile. Complete one full slow charge first. After that cycle, the charge IC re-evaluates the cell and fast-charge negotiation typically resumes at the next plug-in.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391776227418,"sku":"BWCS-XMN141SL-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391776260186,"sku":"BWCS-XMN141SL-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391776292954,"sku":"BWCS-XMN141SL-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-XMN141SL_1.webp?v=1779141929","url":"https:\/\/batteryweb.com\/products\/redmi-24115ra8ec-replacement-battery-385v-5600mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}