{"product_id":"lenovo-ideapad-flex-4-1480-replacement-battery-114v-4550mah-li-polymer","title":"Lenovo IdeaPad Flex 4-1480 Compatible Battery L15C3PB1 11.4V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLenovo IdeaPad Flex 4-1480 — 11.4V Li-Polymer Replacement Battery (L15C3PB1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.4V, 4550mAh lithium-polymer replacement battery for the Lenovo IdeaPad Flex 4-1480, Flex 4-1480 14\", Flex 4-1570, and Flex 4-1580 80VE series. It replaces OEM part numbers L15C3PB1, B102297-0004, 5B10K84638, and L15M3PB0. Swap it in when the original cell no longer holds charge or causes unexpected shutdowns.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFlex 4-1480 \/ 4-1570 \/ 4-1580 series compatibility:\u003c\/strong\u003e\n    These models share the same 11.4V three-cell battery rail, identical connector pinout, and the same BMS handshake protocol — one cell fits the full platform without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a Flex 4-1480 unit and confirmed the BMS negotiated correctly with the BIOS on first boot. The fuel gauge IC picked up the cell and charge cycling began without error flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the Flex 4:\u003c\/strong\u003e\n    After fitting this battery, run the unit down to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after swapping cells on Lenovo IdeaPad 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 poor battery health immediately after fitting a new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Lenovo BIOS reads health data stored in the battery's EEPROM, not from live cell chemistry. When a new cell is installed, the EEPROM data doesn't match the BIOS's learned discharge profile from the old battery. The system flags this as degraded health even though the cell is new. One full discharge-to-hibernate followed by an uninterrupted charge to 100% rewrites the learn cycle and clears the warning.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFlex 4 shutting down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops sharply under combined CPU and display load before the fuel gauge reaches zero — a voltage cliff caused by a worn or mismatched cell. The OS fuel gauge reads state-of-charge against a discharge curve that no longer matches the cell's actual output. A new cell with the correct chemistry resets the discharge curve the fuel gauge IC tracks against. After two full calibration cycles, shutdowns at 20–30% shown should stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409606508634,"sku":"BWCS-LVP148NB-1","price":68.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409606541402,"sku":"BWCS-LVP148NB-2","price":80.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409606574170,"sku":"BWCS-LVP148NB-3","price":89.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVP148NB-1.webp?v=1779580191","url":"https:\/\/batteryweb.com\/products\/lenovo-ideapad-flex-4-1480-replacement-battery-114v-4550mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}