{"product_id":"compal-jft00-replacement-battery-111v-4400mah-li-ion","title":"Compal JFT00 Notebook Replacement Battery 11.1V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCompal JFT00 — 11.1V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 4400mAh (48.84Wh) Li-ion battery for the Compal JFT00 notebook. It replaces the original cell when the laptop no longer holds a charge or the OS reports the battery as degraded. Voltage and connector match the JFT00 platform directly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eJFT00 platform fit:\u003c\/strong\u003e\n    The JFT00 series runs an 11.1V three-cell Li-ion architecture. This battery matches that voltage rail and uses the same connector pinout and BMS communication protocol the JFT00 charging circuit expects.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and load discharge on a JFT00-class system. The BMS handshake completed without error, charge accepted cleanly to 100%, and the protection circuit tripped correctly at low-voltage cutoff under load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use calibration on the JFT00:\u003c\/strong\u003e\n    After fitting, run the laptop down to hibernate cutoff, then charge uninterrupted to 100% without using the machine. This forces the BIOS battery learn cycle to reset against the new cell 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 after swapping the JFT00 cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe JFT00 BIOS reads EEPROM data written by the original cell to track health history. A new cell carries different EEPROM values, so the BIOS flags it as degraded even though the chemistry is fresh. This is a data mismatch, not a fault with the replacement. One full discharge-to-hibernate followed by an uninterrupted charge to 100% resets the learn cycle and resolves the warning on most JFT00 units.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eJFT00 shutting down 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 20–30% remaining, but the cell voltage has already dropped below the threshold the system needs under combined CPU and display load. The laptop cuts power to protect itself. Run two full calibration cycles — full discharge to hibernate, full charge to 100% — and the gauge IC will map the new cell's curve accurately. After calibration, the shutdown typically stops occurring above 10% indicated charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410822365274,"sku":"BWCS-DEV120NB-1","price":104.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410822398042,"sku":"BWCS-DEV120NB-2","price":119.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410822430810,"sku":"BWCS-DEV120NB-3","price":130.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DEV120NB-1.webp?v=1779581242","url":"https:\/\/batteryweb.com\/products\/compal-jft00-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}