{"product_id":"clevo-nv40mb-replacement-battery-152v-3050mah-li-ion","title":"Clevo NV40MB Replacement Battery 15.2V 3050mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eClevo NV40MB \/ NV40ME Series — 15.2V Li-ion Replacement Battery (NV40BAT-4-49)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 15.2V, 3050mAh (46.36Wh) Li-ion replacement battery for the Clevo NV40MB, NV40ME, NV40MZ, NV40PZ, and related models. It replaces OEM part numbers NV40BAT-4-49 and NV40BAT-4-53. Install it when the original cell no longer holds charge and the notebook cannot run unplugged.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eNV40 platform fit:\u003c\/strong\u003e\n    The NV40MB, NV40ME, NV40MZ, and NV40PZ share the same 15.2V four-cell architecture and identical connector pinout. The BMS handshake protocol and EEPROM data structure are consistent across these variants, so one cell works across the full NV40 range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on an NV40 platform. The BMS accepted charge correctly, cell voltage held stable under combined CPU and display load, and no protection trips occurred during the test.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the NV40:\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 the firmware throws 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 battery health as poor after replacing the NV40 cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe NV40 BIOS reads health data from the EEPROM on the battery's BMS board, not from live voltage measurements. When a new cell is installed, the EEPROM values from the old, degraded cell are still referenced until a learn cycle overwrites them. This causes the firmware to flag poor health even on a brand-new battery. Run one complete discharge-to-hibernate followed by an uninterrupted full charge — that sequence forces the BIOS to rewrite the battery profile and clear the warning.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down at 20–30% shown on the NV40 fuel gauge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC maps percentage to voltage using calibration data from the old cell. The new cell has a slightly different discharge curve, so what the gauge calls 25% may already be at the voltage floor under full CPU and display load. The cell cannot sustain output voltage through that load spike, so the protection circuit cuts power before the display gauge reaches zero. Run two full calibration cycles — full discharge to hibernate-cutoff, full charge to 100% — to let the fuel gauge IC relearn the actual voltage-to-capacity curve on the new cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409538416730,"sku":"BWCS-CLN400NB-1","price":91.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409538449498,"sku":"BWCS-CLN400NB-2","price":107.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409538482266,"sku":"BWCS-CLN400NB-3","price":119.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CLN400NB-1.webp?v=1779579965","url":"https:\/\/batteryweb.com\/products\/clevo-nv40mb-replacement-battery-152v-3050mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}