{"product_id":"gateway-nv4900-replacement-battery-111v-4400mah-li-ion","title":"Gateway NV4900 Laptop Replacement Battery 11.1V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGateway NV4900 \/ NV49C \/ NV59C Series — 11.1V Li-ion Replacement Battery (31CR19\/652)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V 4400mAh (48.84Wh) lithium-ion battery for the Gateway NV4900 and related NV-series laptops. It replaces OEM part numbers including 31CR19\/652, AS10D31, AS10D41, AS10D51, AS10D61, AS10D71, AS10D3E, BT.00603.111, BT.00606.008, and BT.00607.125\/127. It fits the NV4900, NV49C, NV49C13C, NV59C, and over 79 additional compatible models in the same platform family.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNV-series platform fit:\u003c\/strong\u003e\n    Gateway's NV4900, NV49C, and NV59C lines share the same 11.1V battery rail, connector pinout, and BMS handshake protocol — that's why a single cell covers this many models across the NV range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge and load cycles on NV-series hardware. The BMS communicated correctly with the system, charge current was accepted without interruption, and voltage held steady under combined CPU and display load through to low-cell cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install recalibration on Gateway NV hardware:\u003c\/strong\u003e\n    After fitting this cell, 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 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 NV4900 shuts down at 20–30% remaining after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the BIOS fuel gauge IC still holds calibration data from the old, degraded cell. It models the new cell's discharge curve against those old reference points and calls the voltage cliff too early. Under combined CPU and display load, the voltage drop looks like a dead cell to the BIOS — even though capacity remains. Run a full discharge-to-hibernate followed by an uninterrupted charge to 100% to force the fuel gauge IC to re-map the actual voltage curve of the new cell. After two to three of these calibration cycles, the reported percentage at shutdown should move back down to the 3–5% range.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting 0% or \"unknown\" battery after fitting the new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe BIOS reads battery identity and health data from the cell's EEPROM on first contact. If the old cell's EEPROM data is still cached — or the new cell hasn't completed a handshake cycle — Windows and the Gateway BIOS will show 0%, \"plugged in, not charging,\" or an unknown device flag. Unplug the AC adapter, hold the power button for 15 seconds to drain the board caps, then reconnect and power on. This forces a fresh EEPROM read and clears the cached identity from the previous cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410789466202,"sku":"BWCS-AC4551NB-1","price":101.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410789498970,"sku":"BWCS-AC4551NB-2","price":116.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410789531738,"sku":"BWCS-AC4551NB-3","price":127.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AC4551NB-1.webp?v=1779581091","url":"https:\/\/batteryweb.com\/products\/gateway-nv4900-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}