{"product_id":"uniwill-m30-replacement-battery-111v-4400mah-li-ion","title":"Uniwill M30 Compatible Battery 11.1V 4400mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eUniwill M30 Series — 11.1V Li-ion Replacement Battery (M30-3S4400-C1S1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V 4400mAh (48.84Wh) lithium-ion battery for the Uniwill M30 and M31 series notebooks. It replaces OEM part numbers M30-3S4400-C1S1, M30-3S4400-G1L1, M30-3S4400-G1P1, 63-UJ1024-0A, 63GUJ1024-2A, and SA20071-01. Compatible models include the M30, M31, M30EI0, and M30EI2.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eM30 and M31 platform compatibility:\u003c\/strong\u003e\n    These models share the same three-cell series configuration, 11.1V nominal rail, and physical connector pinout. The BMS handshake protocol is consistent across the M30EI0 and M30EI2 variants, so one cell fits the entire platform 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 discharge on the M30 platform. The BMS communicated correctly with the system board, charge termination triggered at the expected voltage ceiling, and the fuel gauge IC registered the cell without error flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration on the M30:\u003c\/strong\u003e\n    After installing, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears in system utilities after a cell swap.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting poor battery health immediately after fitting a new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Uniwill M30 BIOS reads health data stored in the battery's EEPROM. When a new cell arrives, its EEPROM cycle count is zero and the rated Wh value may differ slightly from the original — the BIOS interprets this mismatch as a degraded or unknown battery. This is a firmware read issue, not a fault with the new cell. Running one complete discharge-to-hibernate followed by an uninterrupted full charge gives the BIOS enough data to recalculate and update the health status correctly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shutting down at 20–30% charge shown on the M30\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The gauge is still reading from the old cell's data, so it misjudges the voltage cliff — the point where cell voltage drops steeply under combined CPU and display load. The laptop hits the low-voltage protection threshold before the gauge reaches 0%. Fix this by completing two full discharge-to-hibernate and full-charge cycles; after that, the gauge recalibrates and the cutoff aligns with real remaining capacity.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410826625114,"sku":"BWCS-UNM30NB-1","price":81.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43410826657882,"sku":"BWCS-UNM30NB-2","price":95.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43410826690650,"sku":"BWCS-UNM30NB-3","price":106.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-UNM30NB-big.webp?v=1779581287","url":"https:\/\/batteryweb.com\/products\/uniwill-m30-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}