{"product_id":"lenovo-thinkpad-l480-replacement-battery-111v-4000mah-li-polymer","title":"Lenovo ThinkPad L480 Replacement Battery L17C3P52 11.1V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLenovo ThinkPad L480 \/ L580 — 11.1V Li-Polymer Replacement Battery (L17C3P52)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.1V, 4000mAh (44.4Wh) Li-Polymer battery replaces the original cell in the Lenovo ThinkPad L480 and L580. It matches OEM part numbers L17C3P52, L17M3P53, SB10K97613, 01AV464, and 01V466. Physical dimensions are 179.12 × 118.60 × 6.20mm — connector and retention tabs align with the original bay.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eL480 and L580 shared platform:\u003c\/strong\u003e\n    Both models run the same 11.1V battery rail with an identical connector pinout and BMS handshake protocol. Lenovo shared the battery design across the L-series refresh, so one SKU covers 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 ThinkPad L480 under sustained CPU and display load. The BMS held voltage above the BIOS low-threshold cutoff through full discharge, and charge termination triggered correctly at capacity ceiling with no overcharge flags logged.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install discharge cycle:\u003c\/strong\u003e\n    After fitting this cell, run a 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 after every cell swap on ThinkPad hardware.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting battery health as poor after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ThinkPad BIOS reads health data from EEPROM registers written by the original cell. A new cell ships with blank or mismatched register values, so the firmware flags it as degraded even when the cell is fresh. This is not a fault with the replacement — it is a calibration state. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% allows the fuel gauge IC to write fresh baseline data, and the health warning clears on the next BIOS read.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down at 20–30% charge shown on screen\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 OS reads a stale capacity map from the old EEPROM data and marks 20–30% as the floor, cutting power before the cell is truly exhausted. It is not a defective cell — it is a mismatch between stored discharge curves and the new chemistry. Complete two full discharge-to-hibernate and full-recharge cycles; the fuel gauge recalibrates and the shutdown threshold drops back to the correct low-voltage cutoff near 3.0V per cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409709334618,"sku":"BWCS-LVL480NB-1","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409709367386,"sku":"BWCS-LVL480NB-2","price":87.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409709400154,"sku":"BWCS-LVL480NB-3","price":97.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVL480NB-1.webp?v=1779580516","url":"https:\/\/batteryweb.com\/products\/lenovo-thinkpad-l480-replacement-battery-111v-4000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}