{"product_id":"lenovo-ideapad-y470-replacement-battery-111v-4400mah-li-ion","title":"Lenovo IdeaPad Y470 Replacement Battery 11.1V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLenovo IdeaPad Y470 Series — 11.1V Li-ion Replacement Battery (57Y6625)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.1V, 4400mAh (48.84Wh) Li-ion battery replaces the original pack in the Lenovo IdeaPad Y470, Y470A, Y470D, and Y470G, along with 17 additional Y470-series variants. It matches the OEM voltage rail, connector pinout, and BMS communication spec required by the Y470 platform. Capacity figures come from the product data — not inflated web listings.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eY470 platform compatibility:\u003c\/strong\u003e\n    All Y470-series variants share the same 11.1V three-cell voltage rail, identical 9-pin connector, and the same BMS handshake protocol. One cell covers the full lineup because Lenovo standardised the battery interface across Y470A, Y470D, and Y470G at the hardware level — not just by marketing name.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a Y470 unit and monitored BMS communication through full charge and discharge cycles. The protection circuit engaged correctly at low-voltage cutoff, and charge termination fired at the expected 12.6V endpoint with no current runaway.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the Y470:\u003c\/strong\u003e\n    After fitting, run the laptop on battery power until it hibernates at low-charge cutoff, then charge uninterrupted to 100% without interruption. This forces the Y470 BIOS to complete its battery learn cycle and clears the inaccurate health warning that appears after every cell swap.\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 Y470 BIOS reads health data stored in the old cell's EEPROM and carries that data forward until a learn cycle resets it. A brand-new cell will show \"poor health\" or a degraded charge percentage straight after install — this is an EEPROM artefact, not a fault with the replacement cell. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% rewrites the BIOS battery profile against the new cell's actual capacity. After two to three cycles the health indicator normalises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down at 20–30% battery shown on the gauge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC hasn't calibrated against the new cell's voltage curve yet. The gauge reads the old cell's discharge profile and predicts shutdown too early — the laptop cuts power before the displayed percentage reaches zero. The fix is the same learn cycle: discharge to hibernate cutoff, then charge to 100% without interruption. After two full calibration cycles the gauge tracks the new cell accurately and the premature shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409803739226,"sku":"BWCS-LVY470NB-1","price":104.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409803771994,"sku":"BWCS-LVY470NB-2","price":119.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409803804762,"sku":"BWCS-LVY470NB-3","price":130.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVY470NB-1.webp?v=1779580992","url":"https:\/\/batteryweb.com\/products\/lenovo-ideapad-y470-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}