{"product_id":"lenovo-thinkbook-15-replacement-battery-1155v-4000mah-li-polymer","title":"Lenovo ThinkBook 15 L19C3PF1 Replacement Battery 11.55V 46.2Wh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLenovo ThinkBook 14 \/ ThinkBook 15 — 11.55V Li-Polymer Replacement Battery (L19C3PF1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.55V, 4000mAh (46.2Wh) Li-Polymer replacement battery for the Lenovo ThinkBook 14 and ThinkBook 15. It matches OEM part numbers L19C3PF1, L19L3PF1, and SB10V25242. Swap it when the original cell no longer holds a usable charge.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThinkBook 14 and 15 compatibility:\u003c\/strong\u003e\n    Both models share the same 11.55V three-cell battery bay, connector pinout, and BMS handshake protocol — one cell fits both chassis without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a ThinkBook 15 through full charge and discharge. The BMS communicated correctly with the BIOS, reported capacity accurately, and held the charge curve expected from a fresh Li-Polymer cell.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on ThinkBook:\u003c\/strong\u003e\n    After fitting, let the laptop discharge completely to hibernate cutoff, then charge uninterrupted to 100%. This runs the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell replacement.\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 replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eLenovo's BIOS reads health data from the EEPROM stored on the old cell. When a new cell is fitted, that EEPROM data is gone and the BIOS flags the battery as unknown or degraded until it gathers its own charge history. This is not a fault with the replacement cell. Run one full discharge-to-hibernate cycle followed by a full uninterrupted charge to 100%. After two to three full cycles, the BIOS fuel gauge IC recalibrates against the new cell's actual capacity and the health warning clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eThinkBook shutting down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis symptom points to voltage cliff — the cell voltage drops sharply under combined CPU and display load before the fuel gauge reaches 0%. The BIOS shuts down to protect the hardware, even though the percentage shown looks safe. An uncalibrated fuel gauge IC makes this worse after a cell swap because it maps new cell voltage curves onto old data. Run the full discharge-to-hibernate calibration cycle described above, then recheck under load. If shutdown persists below 15% shown, the BIOS learn cycle has not completed — run a second full cycle and verify the battery percentage in Lenovo Vantage after each one.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409653923930,"sku":"BWCS-LVT150NB-1","price":61.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409653956698,"sku":"BWCS-LVT150NB-2","price":71.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409653989466,"sku":"BWCS-LVT150NB-3","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVT150NB-1.webp?v=1779580312","url":"https:\/\/batteryweb.com\/products\/lenovo-thinkbook-15-replacement-battery-1155v-4000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}