{"product_id":"redmi-10x-4g-replacement-battery-385v-4800mah-li-polymer","title":"Redmi 10X 4G Replacement Battery 3.85V 4800mAh Li-Po","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRedmi 10X 4G (M2003J15SC \/ M2003J15SS \/ M2003J15SG) — 3.85V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.85V Li-Polymer battery replaces the original cell in the Redmi 10X 4G smartphone. It fits model numbers M2003J15SC, M2003J15SS, and M2003J15SG. Rated capacity is 4800mAh (18.48Wh) — matching the stock specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eModel variant coverage:\u003c\/strong\u003e\n    The M2003J15SC, M2003J15SS, and M2003J15SG share the same battery bay dimensions, connector pinout, and BMS handshake protocol — one cell covers all three regional variants 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 the 10X 4G mainboard. The BMS accepted the charge IC handshake cleanly, voltage held above 3.6V under sustained screen-on load, and the protection circuit tripped correctly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After installation, disable fast charging and complete one full discharge-charge cycle at standard speed. This lets the fuel gauge IC map the new cell's discharge curve before the coulomb counter locks in its reference points — skipping this step is the most common cause of erratic percentage readings post-swap.\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 a fresh replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC is still calibrated to the old cell's discharge curve. When the Redmi 10X 4G fires up the modem or increases display brightness, the new cell's actual voltage drops below the shutdown threshold before the reported percentage catches up. The phone cuts power to protect the hardware — not because the cell is faulty. One complete standard-speed discharge-charge cycle resets the coulomb counter reference, and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging not working on the first cycle after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Redmi 10X 4G uses a proprietary charge protocol negotiated between the charge IC and the battery BMS. On the first cycle with a new cell, the BMS starts in a conservative state and may reject the high-current handshake until it has completed one standard charge. Plug in using the original adapter and let the phone charge at the base rate to 100%. After that first full cycle, the fast charge protocol should negotiate correctly on subsequent connections.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391946981466,"sku":"BWCS-MUN900SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391947014234,"sku":"BWCS-MUN900SL-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391947047002,"sku":"BWCS-MUN900SL-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MUN900SL-1.webp?v=1779142720","url":"https:\/\/batteryweb.com\/products\/redmi-10x-4g-replacement-battery-385v-4800mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}