{"product_id":"compaq-omnibook-4111-replacement-battery-111v-6600mah-li-ion","title":"Compaq OmniBook 4111 F1466A Replacement Battery 11.1V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCompaq OmniBook 4111 — 11.1V Li-ion Replacement Battery (F1466A)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.1V, 6600mAh (73.26Wh) Li-ion cell replaces the original F1466A battery in the Compaq OmniBook 4111 and related OmniBook 4100-series notebooks. It fits the OmniBook 4101, 4104, 4107, and 4111 along with nine additional OmniBook variants sharing the same connector and voltage rail. Capacity figures are sourced from the product data — not estimated from web listings.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOmniBook 4100-series platform fit:\u003c\/strong\u003e\n    The 4101, 4104, 4107, and 4111 all share the same three-cell 11.1V architecture, the same F1466A connector pinout, and the same BMS handshake protocol. One cell revision covers the entire series without 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-discharge cycles on the OmniBook platform and confirmed the BMS communicates state-of-charge data correctly to the host system. The protection circuit responded to cutoff thresholds within spec.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap discharge cycle on the OmniBook:\u003c\/strong\u003e\n    After installing 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 OmniBook BIOS displays after every cell replacement.\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 installing the F1466A cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe OmniBook BIOS stores charge history in the original cell's EEPROM. When a new cell arrives, the BIOS reads no learned data and flags health as poor or unknown — this is a firmware response, not a cell defect. Running one full discharge-to-hibernate followed by a complete uninterrupted charge gives the BIOS enough data to rebuild its health model. After two to three full cycles, the health indicator corrects itself. No BIOS update or driver change is required.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eOmniBook shutting down abruptly at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis symptom points to a fuel gauge IC that has not yet calibrated against the new cell's actual chemistry. The gauge IC learned the voltage-to-capacity curve of the degraded original cell, so it reads the new cell's discharge curve incorrectly and calls cutoff too early. The fix is the same full discharge-to-hibernate cycle: let the system reach 0% and power off on its own, then charge to 100% without interruption. After two cycles the gauge re-maps to the new cell and the early shutdown stops. Target charge voltage to confirm full charge is 12.6V across the pack terminals.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410865946714,"sku":"BWCS-CP4100NB-1","price":82.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43410865979482,"sku":"BWCS-CP4100NB-2","price":97.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43410866012250,"sku":"BWCS-CP4100NB-3","price":108.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CP4100NB-big.webp?v=1779581402","url":"https:\/\/batteryweb.com\/products\/compaq-omnibook-4111-replacement-battery-111v-6600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}