{"product_id":"gateway-nv4001-replacement-battery-111v-4400mah-li-ion","title":"Gateway AS09C31 NV4001 Replacement Battery 11.1V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGateway NV4001 Series — 11.1V Li-ion Replacement Battery (AS09C31)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V Li-ion replacement battery for the Gateway NV4001, NV4001c, NV4005c, NV4400, and over 30 additional NV-series laptops. It replaces OEM part numbers AS09C31, AS09C70, AS09C71, and AS09C75. Capacity is 4400mAh (48.84Wh), matching the original cell specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNV-series cell compatibility:\u003c\/strong\u003e\n    These Gateway NV models share the same 11.1V three-cell architecture, connector pinout, and BMS handshake protocol. One cell fits the entire range without modification or adapter.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a Gateway NV4001 and confirmed the BMS communicates correctly with the system board. The charge controller accepted full charge without fault codes, and the fuel gauge IC initialised within two cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration on Gateway NV laptops:\u003c\/strong\u003e\n    After installing, run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS 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 battery health as poor after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eGateway NV laptops store battery health data in EEPROM on the old cell. When a new cell goes in, the BIOS reads stale data and flags poor health immediately. This is not a fault with the replacement — the BIOS simply hasn't run a learn cycle against the new chemistry. Complete one full discharge-to-hibernate then an uninterrupted charge to 100%, and the health status will update to normal.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shutting down at 20–30% remaining after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC hasn't yet calibrated against the new cell's voltage curve. The OS reads a remaining-charge estimate based on old data, and the cell hits a voltage cliff before the gauge reaches zero. Under combined CPU and display load, voltage sags faster than the uncalibrated gauge expects, triggering an emergency shutdown. Run two to three full discharge-and-charge cycles and the gauge will track accurately — target a resting voltage of 12.4–12.6V after a full charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410798116954,"sku":"BWCS-AC5634NB-1","price":56.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410798149722,"sku":"BWCS-AC5634NB-2","price":66.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410798182490,"sku":"BWCS-AC5634NB-3","price":73.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AC5634NB-1.webp?v=1779581141","url":"https:\/\/batteryweb.com\/products\/gateway-nv4001-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}