{"product_id":"winbook-c100-replacement-battery-148v-4400mah-li-ion","title":"WinBook C100 14.8V Replacement Battery 442675300002 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWinBook C100 \/ C120 \/ C140 \/ C170 — 14.8V Li-ion Replacement Battery (442675300002)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.8V, 4400mAh (65.12Wh) Li-ion replacement battery for WinBook C100, C120, C140, and C170 notebook computers. It replaces OEM part numbers 442675300002, 442675300003, 442675300005, 442675300007, and 8UR18650F-SECT-QC10. Cell count, connector pinout, and BMS communication protocol match the original pack.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eC100 \/ C120 \/ C140 \/ C170 compatibility:\u003c\/strong\u003e\n    These four models share the same battery bay dimensions, 14.8V nominal rail, and SMBus BMS handshake — one pack covers all four platforms without adapter or modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge and discharge cycles on a WinBook C100 board. The BMS negotiated correctly with the system firmware, charge current ramped as expected, and cell balancing activated without fault codes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the C-series:\u003c\/strong\u003e\n    After fitting this battery, run the laptop on battery only until it hibernates at low cutoff voltage, then charge uninterrupted to 100%. This single full cycle resets the BIOS battery learn cycle and clears the inaccurate health warning that commonly appears after swapping cells on this platform.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the WinBook C100 reports a new battery as poor health in BIOS\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe BIOS reads health status from EEPROM data stored in the battery's onboard fuel gauge IC. When a new pack is installed, the IC ships with factory-default charge history, which the BIOS interprets as a worn cell profile. This is a data mismatch, not a hardware fault. Running one full discharge-to-hibernate then a complete charge cycle overwrites the learn data, and the BIOS health indicator updates to normal on the next boot.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWinBook C-series shutting down at 20–30% charge remaining\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis shutdown pattern points to a voltage cliff — under combined CPU and display load, the cells drop below the BMS cutoff threshold before the fuel gauge reaches 0%. On a new replacement battery, it typically means the fuel gauge IC hasn't finished calibrating against the new cell chemistry. Run two to three full discharge-to-hibernate cycles, charging fully between each. After calibration, the gauge tracks accurately and the early shutdowns stop. If the fault persists beyond three cycles, check that the BIOS is not running a user-set charge limit — navigate to BIOS Power settings and confirm the charge ceiling is set to 100%.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410830032986,"sku":"BWCS-MT8080NB-1","price":71.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43410830065754,"sku":"BWCS-MT8080NB-2","price":83.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43410830098522,"sku":"BWCS-MT8080NB-3","price":93.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MT8080NB-big.webp?v=1779581286","url":"https:\/\/batteryweb.com\/products\/winbook-c100-replacement-battery-148v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}