{"product_id":"datron-m288-replacement-battery-148v-4400mah-li-ion","title":"Datron M288 Replacement Battery 14.8V 4400mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDatron M288 \/ M296 — 14.8V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.8V 4400mAh (65.12Wh) Li-ion battery for the Datron M288 and M296 notebook computers. It replaces the original cell when the laptop no longer holds charge or fails to power on from battery alone. Voltage and connector match the original spec — no modification needed.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eM288 and M296 compatibility:\u003c\/strong\u003e\n    Both models share the same 14.8V battery rail, connector pinout, and BMS handshake protocol. One cell fits both. Swapping between models does not require a firmware change or BIOS update.\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 a Datron-class notebook platform. The BMS communicated correctly with the host system — charge current ramped normally, taper-off triggered at capacity, and no protection trips occurred during load transitions.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration on the M288:\u003c\/strong\u003e\n    After fitting this cell, let the laptop discharge fully until it hibernates on its own, then charge uninterrupted to 100% without unplugging early. 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\"\u003eLaptop shuts down at 20–30% remaining after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC is still calibrated to the old, degraded cell. The new cell has a steeper voltage curve at high state-of-charge, so the IC misreads remaining capacity and triggers shutdown early. It is not a fault with the replacement — it is a calibration gap. Run two full discharge-to-hibernate then uninterrupted charge-to-100% cycles and the shutdowns stop. After the second cycle, the fuel gauge IC tracks the new cell accurately and the laptop holds charge to a genuine 0%.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reports battery health as poor or unknown immediately after install\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe BIOS reads health data from EEPROM registers written by the original cell. A new cell arrives with different EEPROM values — cycle count, rated Wh, and internal resistance data all differ from what the BIOS last recorded. This causes the health display to show \"poor\", \"unknown\", or a mismatched Wh figure. The fix is to complete one full learn cycle: discharge to hibernate cutoff at roughly 10.5V under load, then charge to 16.72V float without interruption. After that cycle the BIOS rewrites its reference data against the new cell and the health warning clears.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410824921178,"sku":"BWCS-ADA440NB-1","price":82.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43410824953946,"sku":"BWCS-ADA440NB-2","price":97.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43410824986714,"sku":"BWCS-ADA440NB-3","price":107.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ADA440NB-1.webp?v=1779581286","url":"https:\/\/batteryweb.com\/products\/datron-m288-replacement-battery-148v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}