{"product_id":"lenovo-ideapad-s10-2-replacement-battery-111v-6600mah-li-ion","title":"Lenovo IdeaPad S10-2 Replacement Battery 11.1V L09C3B12","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLenovo IdeaPad S10-2 Series — 11.1V Li-ion Replacement Battery (L09C3B12)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.1V, 6600mAh Li-ion cell replaces the original battery in the Lenovo IdeaPad S10-2 netbook, including the S10-2 20027 and S10-2 2957 variants. It fits the physical bay and connector directly, with no modifications required. Capacity is 73.26Wh — matching the original cell specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eS10-2 series compatibility:\u003c\/strong\u003e\n    The S10-2, S10-2 20027, and S10-2 2957 all share the same 11.1V three-cell architecture, connector pinout, and BMS handshake protocol — which is why a single replacement cell covers all three variants. Part numbers L09C3B12, L09C6Y12, L09C6YU11, L09M3B11, L09S3B11, and L09S6Y11 are cross-compatible across this lineup.\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 S10-2 platform. The BMS initialised correctly, the BIOS recognised the cell without error flags, and charge current ramped down as expected at the top-of-charge threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the S10-2:\u003c\/strong\u003e\n    After fitting, run one full discharge until the machine hibernates on its own, then charge uninterrupted to 100% without interruption. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap 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 IdeaPad S10-2 shuts down at 20–30% after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe S10-2 BIOS stores voltage-to-capacity mapping from the previous cell in non-volatile memory. When a new cell goes in, those old curves no longer match the actual chemistry, so the fuel gauge IC miscalculates remaining charge. Under combined CPU and display load, the cell hits a voltage cliff the BIOS wasn't expecting, and the system shuts down to protect itself. Running one full supervised discharge-to-hibernate cycle followed by a complete uninterrupted charge resets the learned curve and resolves the premature shutdown.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reports battery health as \"poor\" or \"replace soon\" immediately after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the EEPROM retains health data written by the old degraded cell — the BIOS reads that stored value rather than measuring the new cell directly. It is not a fault with the replacement. Complete the calibration cycle described above: discharge to hibernate cutoff, then charge to 100% without interruption. After two to three full cycles the fuel gauge IC will have enough data to overwrite the stale EEPROM values, and the health warning clears.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409801576538,"sku":"BWCS-IBS10HB-1","price":118.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43409801609306,"sku":"BWCS-IBS10HB-2","price":136.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43409801642074,"sku":"BWCS-IBS10HB-3","price":149.99,"currency_code":"USD","in_stock":false}],"url":"https:\/\/batteryweb.com\/products\/lenovo-ideapad-s10-2-replacement-battery-111v-6600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}