{"product_id":"gateway-nv52-replacement-battery-111v-8800mah-li-ion","title":"Gateway NV52 Replacement Battery 11.1V 8800mAh AS09A31","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGateway NV52 Series — 11.1V Li-ion Replacement Battery (AS09A31)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 8800mAh Li-ion replacement battery for the Gateway NV52 series of notebook computers. It fits the NV52, NV5207U, NV5211U, NV5212U, and over 59 additional NV-series variants. Capacity is 97.68Wh — matching the original cell specification for this platform.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNV52-series platform fit:\u003c\/strong\u003e\n    These models share a common battery bay connector, BMS handshake protocol, and 11.1V three-cell voltage rail. Any model on the AS09A31 compatibility list uses the same EEPROM battery data structure, so the replacement cell communicates with the BIOS without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through a full charge-discharge cycle on NV52 hardware. The BMS accepted the handshake immediately, the BIOS recognised the cell as a valid pack, and charge current stepped down correctly at the 80% and 100% thresholds as expected from Gateway's firmware.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration on NV52:\u003c\/strong\u003e\n    After installing, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell's actual capacity, clearing the inaccurate health warning that typically appears after every 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\"\u003eBIOS reporting poor battery health immediately after fitting a new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Gateway NV52 BIOS stores learned capacity data from the previous cell in non-volatile memory. When a new cell goes in, that stored data no longer matches the actual pack chemistry, so the BIOS flags the battery as degraded before it has run a single cycle. This is not a fault with the replacement cell — it is stale EEPROM data from the old pack. Run one complete discharge-to-hibernate cycle followed by a full uninterrupted charge to 100%, and the BIOS will rewrite its health record against the new cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down abruptly 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 gauge reports 25% remaining, but the cell hits its low-voltage cutoff cliff under combined CPU and display load before the OS receives a low-battery warning. The fix is the same calibration cycle — discharge fully to hibernate, charge straight to 100% without interruption. After two full cycles the fuel gauge IC maps the new cell's voltage curve accurately, and shutdowns at falsely high percentages stop. Target voltage at full charge is 12.6V across the pack.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409825890394,"sku":"BWCS-AC5532HB-1","price":123.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409825923162,"sku":"BWCS-AC5532HB-2","price":142.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409825955930,"sku":"BWCS-AC5532HB-3","price":155.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AC5532HB-1.webp?v=1779581092","url":"https:\/\/batteryweb.com\/products\/gateway-nv52-replacement-battery-111v-8800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}