{"product_id":"lenovo-v4400-replacement-battery-144v-2200mah-li-ion","title":"Lenovo V4400 Replacement Battery 14.4V 2200mAh L15M4A01","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLenovo V4400 \/ Ideapad 100 80QQ — 14.4V Li-ion Replacement Battery (L15M4A01)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 14.4V, 2200mAh (31.68Wh) Li-ion battery replaces the original cell in the Lenovo V4400 notebook and Ideapad 100 80QQ series. It slots into the same bay and connects via the original multi-pin connector. Cross-references include L15S4A01, L15L4A01, and a range of 5B10-series Lenovo part numbers covering the TianYi100-14IBD and related variants.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eV4400 and Ideapad 100 platform fit:\u003c\/strong\u003e\n    These models share the same 14.4V four-cell architecture and a common BMS handshake protocol. The replacement cell carries the same EEPROM-level identification data the Lenovo firmware expects, so the system recognises it on first boot without rejecting it as an unknown source.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a V4400 board and monitored the BMS through charge and discharge cycles. The protection circuit held cutoff at the correct low-voltage threshold and accepted a full charge without tripping the overcharge flag.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration for the V4400:\u003c\/strong\u003e\n    After fitting, drain the battery to hibernate cutoff under normal use — do not force-drain — then charge uninterrupted to 100%. This single learn cycle resets the BIOS fuel gauge against the new cell's actual capacity 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\"\u003eLaptop shutting down at 20–30% shown after battery replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC still holds calibration data from the old, degraded cell. When the new cell reaches a voltage point the old profile mapped to 20–30%, the system treats it as depleted and cuts power. The cell itself has capacity remaining — the gauge just can't read it yet. Run one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100%; after two to three cycles the gauge tracks correctly. If shutdown still occurs early, check that the BIOS is not enforcing a battery care charge limit below 80%.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting new battery health as \"poor\" immediately after install\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Lenovo BIOS reads health status from EEPROM wear data written by the old cell over its service life. A new cell arrives with fresh EEPROM counters that don't match the learned discharge curve the firmware expects, so it flags health as poor or unknown. This is a calibration state, not a fault. Complete one full discharge-to-hibernate cycle and a full uninterrupted charge; the BIOS recalculates health against actual cell behaviour and clears the warning. After the learn cycle, battery health should display as normal in Lenovo Vantage or the BIOS power screen.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409755177050,"sku":"BWCS-LVT400NB-1","price":97.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409755209818,"sku":"BWCS-LVT400NB-2","price":110.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409755242586,"sku":"BWCS-LVT400NB-3","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVT400NB-1.webp?v=1779580734","url":"https:\/\/batteryweb.com\/products\/lenovo-v4400-replacement-battery-144v-2200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}