{"product_id":"compaq-business-notebook-nc2400-replacement-battery-108v-4400mah-li-ion","title":"Compaq nc2400 Replacement Battery 10.8V 4400mAh EH768UT","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCompaq Business Notebook nc2400 \/ 2510p — 10.8V Li-ion Replacement Battery (HSTNN-DB23)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 10.8V, 4400mAh Li-ion cell replaces the original battery in the Compaq Business Notebook nc2400, 2400, and 2510p. It matches the voltage rail, connector, and BMS handshake required by these ultraportable business notebooks. OEM part numbers covered include EH768UT, 484784-001, HSTNN-DB22, HSTNN-FB21, and several others in this family.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003enc2400 and 2510p platform compatibility:\u003c\/strong\u003e\n    These three models share the same 10.8V power rail, identical dock connector pinout, and the same BMS communication protocol — which is why one cell covers all of them. The 2510p uses the same charge circuit as the nc2400, so the EEPROM handshake is identical.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on an nc2400 chassis and confirmed the BMS completed a full charge sequence without flagging a fault. The charge controller accepted the cell and terminated at 100% without an overcharge error.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the nc2400:\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 nc2400 BIOS reports poor battery health after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe nc2400 BIOS reads health data from the battery's EEPROM, not from live cell measurements. When a new cell is installed, the EEPROM values don't match what the BIOS learned from the old degraded cell, so it flags the replacement as poor or unknown. This isn't a fault with the new cell. Run one full discharge-to-hibernate cycle followed by a full uninterrupted charge — the BIOS learn cycle rewrites its reference data and the warning clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003enc2400 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 hasn't been calibrated against the new cell's actual chemistry. The gauge was trained on the old degraded cell and misreads the voltage curve of a fresh one. Under full CPU and display load, the nc2400 hits a voltage cliff the gauge didn't anticipate and forces an immediate shutdown. Run two or three full discharge-to-hibernate and full-charge cycles — by the third cycle the fuel gauge IC tracks the new cell accurately and the early shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410865291354,"sku":"BWCS-CP2400NB-1","price":42.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410865324122,"sku":"BWCS-CP2400NB-2","price":48.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410865356890,"sku":"BWCS-CP2400NB-3","price":53.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CP2400NB-1.webp?v=1779581401","url":"https:\/\/batteryweb.com\/products\/compaq-business-notebook-nc2400-replacement-battery-108v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}