{"product_id":"lenovo-ideapad-310-15-replacement-battery-76v-3750mah-li-polymer","title":"Lenovo IdeaPad 310 15\" Compatible Battery 7.6V L15L2PB4","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLenovo IdeaPad 310 15\" Series — 7.6V Li-Polymer Replacement Battery (L15L2PB4)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.6V, 3,750mAh (28.5Wh) Li-Polymer battery for the Lenovo IdeaPad 310 15\" and 310 15\" Touch notebooks. It fits the 310-15ISK, 310-15IKB, and over 40 additional IdeaPad 310 variants sharing the same connector and BMS handshake. OEM cross-references include L15M2PB3, L15C2PB5, L15C2PB7, 5B10K88299, and 5B10K90804, among others.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIdeaPad 310 platform compatibility:\u003c\/strong\u003e\n    Every model in this list runs the same 7.6V two-cell Li-Polymer architecture with an identical edge connector and EEPROM handshake to the BIOS power controller. Swapping between sub-models is safe — the BMS negotiates capacity data directly from the cell's EEPROM, not a hard-coded firmware value.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a 310-15ISK and monitored the BMS through charge and discharge. The protection circuit triggered correctly at the low-voltage cutoff, and the charge IC stepped down from CC to CV mode at the expected 8.5V threshold without false-trip shutdowns.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install discharge cycle on IdeaPad 310:\u003c\/strong\u003e\n    After fitting this battery, run one full discharge until the laptop hibernates on its own, then charge uninterrupted to 100% without using the machine. This resets the BIOS battery learn cycle and clears the inaccurate \"Battery health — poor\" flag that almost always appears after a 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\"\u003eWhy the IdeaPad 310 BIOS reports poor health immediately after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe 310's BIOS reads health status from EEPROM data written during the old cell's life — accumulated cycle count, internal resistance estimates, and calibrated full-charge capacity. A new cell arrives with factory EEPROM values that don't match the BIOS's stored baseline, so it flags the mismatch as degraded health. This is a data synchronisation issue, not a fault with the replacement cell. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% lets the BIOS rewrite its baseline against the new cell's actual parameters. After one or two complete cycles, the health indicator corrects itself.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eIdeaPad 310 shutting down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC's stored discharge curve no longer matches the new cell's actual voltage profile. The gauge predicts 20–30% remaining based on old data, but the cell's open-circuit voltage has already dropped below the point it can sustain load from the CPU and display together — so the system cuts power before the displayed percentage reaches zero. It is not a defective cell; it is an uncalibrated gauge. Force the laptop to hibernate by draining it completely under normal use, then charge to 100% twice in a row without interrupting. The fuel gauge IC re-maps its curve against real discharge data and the early shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409734926426,"sku":"BWCS-LVP310NB-1","price":61.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409734959194,"sku":"BWCS-LVP310NB-2","price":70.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409734991962,"sku":"BWCS-LVP310NB-3","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVP310NB-1.webp?v=1779580583","url":"https:\/\/batteryweb.com\/products\/lenovo-ideapad-310-15-replacement-battery-76v-3750mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}