{"product_id":"gericom-n243-replacement-battery-148v-4400mah-li-ion","title":"14.8V Gericom N243 Replacement Battery 4400mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGericom N243 \/ N244 Series — 14.8V Li-ion Replacement Battery (23-U74201-31)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.8V, 4400mAh (65.12Wh) lithium-ion battery for the Gericom N243 and N244 series laptops. It replaces OEM part numbers 23-U74201-31, 23-U74204-00, 23-UD3202-00, and the full BAT-243S1 \/ UN243 family. Four cells in series deliver the 14.8V nominal rail the system board expects.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eN243 and N244 series fit:\u003c\/strong\u003e\n    Both series share the same 14.8V four-cell configuration, connector pinout, and BMS handshake protocol — which is why a single part number covers the entire range. Swapping between these models does not require any hardware modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the N243 platform. The BMS communicated correctly with the system board, charge acceptance reached full capacity, and protection circuits triggered normally at low-voltage cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the N243:\u003c\/strong\u003e\n    After fitting this battery, run the laptop on battery power until it hibernates from low charge, then charge uninterrupted to 100% without interruption. This forces the 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 fitting a new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe N243 BIOS reads health data stored in the battery's EEPROM, not the live cell voltage. When a new cell arrives, that EEPROM contains factory default values that the BIOS interprets as degraded. The fix is not a hardware change — it is a calibration cycle. Discharge fully to hibernate cutoff, charge to 100%, and the BIOS rewrites its health baseline against the new cell data. After one complete cycle the health warning clears.\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 cell voltage drops below the BMS cutoff threshold under full CPU and display load, even though the fuel gauge still shows charge remaining. The fuel gauge IC was calibrated against the old, degraded cell — its discharge curve no longer matches the new cell's chemistry. The gauge reads artificially high right up to the voltage cliff, then the BMS cuts power instantly. Run two full discharge-to-hibernate and uninterrupted charge-to-100% cycles to let the fuel gauge IC re-map the new cell's curve. After calibration, the displayed percentage should track actual cell voltage accurately down to the 5–7V cutoff range.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410843598938,"sku":"BWCS-UWN243NB-1","price":81.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410843631706,"sku":"BWCS-UWN243NB-2","price":95.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410843664474,"sku":"BWCS-UWN243NB-3","price":106.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-UWN243NB-1.webp?v=1779581321","url":"https:\/\/batteryweb.com\/products\/gericom-n243-replacement-battery-148v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}