{"product_id":"lenovo-ideapad-5-15are05-replacement-battery-1536v-4750mah-li-polymer","title":"Lenovo IdeaPad 5-15ARE05 L21C4PH2 Replacement Battery 15.36V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLenovo IdeaPad 5-15ARE05 \/ 5-15IIL05 \/ 5-15ITL05 — 15.36V Li-Polymer Replacement Battery (L21C4PH2)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 15.36V, 4750mAh (72.96Wh) Li-Polymer battery for the Lenovo IdeaPad 5 15-inch notebook series. It fits the IdeaPad 5-15ARE05, 5-15IIL05, and 5-15ITL05 models. It replaces OEM part numbers L21C4PH2, L21D4PH2, L21L4PH2, L21M4PH2, SB11B53887, and SB11F48157.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIdeaPad 5 15-inch series compatibility:\u003c\/strong\u003e\n    The ARE05, IIL05, and ITL05 share the same battery bay geometry, connector pinout, and BMS handshake protocol. All three models draw from the same 15.36V four-cell Li-Polymer platform, so one cell fits all three 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 an IdeaPad 5-15ITL05 under mixed CPU and display load. The BMS held charge correctly across full discharge cycles, and BIOS reported capacity within normal bounds after calibration.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on IdeaPad 5:\u003c\/strong\u003e\n    After fitting, run the laptop on battery until it hibernates at low voltage, 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 series.\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\"\u003eThe IdeaPad 5 BIOS stores battery health data in EEPROM tied to the original cell. When a new cell is installed, the BIOS compares live readings against stale EEPROM values and flags poor health — even when the new cell is fine. This is not a fault with the replacement. Running one complete discharge-to-hibernate cycle followed by a full uninterrupted charge gives the BIOS enough data to overwrite the old EEPROM values. After two to three full cycles, the health warning clears and capacity reporting stabilises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down at 20–30% battery 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 discharge curve. The gauge reports 20–25% remaining, but the cell voltage has already dropped below the BMS cutoff threshold under full CPU and display load — so the system shuts down. It is not a faulty cell. Run two full discharge-to-hibernate cycles without interruption, letting the fuel gauge IC map the new cell's voltage-to-capacity relationship. After calibration, the gauge tracks accurately and the early shutdown stops.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409547198554,"sku":"BWCS-LVP515NB-1","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409547231322,"sku":"BWCS-LVP515NB-2","price":116.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409547264090,"sku":"BWCS-LVP515NB-3","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVP515NB_1.webp?v=1779579986","url":"https:\/\/batteryweb.com\/products\/lenovo-ideapad-5-15are05-replacement-battery-1536v-4750mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}