{"product_id":"gateway-lt22-replacement-battery-108v-4400mah-li-ion","title":"Gateway UM09E36 Replacement Battery 10.8V 4400mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGateway LT22 Series — 10.8V Li-ion Replacement Battery (UM09E36)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 4400mAh (47.52Wh) Li-ion battery for the Gateway LT22, LT2203, LT2206H, and LT2207H netbooks. It replaces OEM part numbers UM09E36, UM09E51, UM09E56, UM09E78, UM09E32, CGR-8\/6P3, 3ICR18\/65-2, and 3ICR19\/66-2. If the original cell is degraded, swollen, or dead, this restores full battery function to the LT22 platform.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLT22 platform compatibility:\u003c\/strong\u003e\n    The LT2203, LT2206H, and LT2207H all share the same battery bay geometry, connector pinout, and BMS handshake protocol as the base LT22. One cell fits the entire sub-series without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on an LT22 unit. The BMS initialised correctly, the OS recognised the pack, and charge termination triggered at full capacity without false cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap calibration:\u003c\/strong\u003e\n    After installing, 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 on first boot 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 LT22 BIOS reads health data from EEPROM registers written by the original cell during its service life. A new cell ships with blank or default EEPROM values, so the BIOS flags it as degraded or unknown — this is a data mismatch, not a fault with the replacement. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% gives the BIOS enough cycle data to overwrite the stale registers. After two or three calibration cycles, the health indicator normalises. If it persists beyond three cycles, confirm firmware is up to date in the Gateway BIOS utility.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLT22 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 still holds calibration data from the old, degraded cell. Under combined CPU and display load, the new cell's actual voltage curve doesn't match the stored model, so the system hits what looks like a voltage cliff and shuts down before the gauge reaches zero. The fix is a full calibration cycle: use the netbook normally until it hibernates on its own, then charge to 100% without interruption. Repeat twice. By the third cycle the fuel gauge IC has mapped the new cell's discharge curve and the shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410819940442,"sku":"BWCS-AUE36NB-1","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410819973210,"sku":"BWCS-AUE36NB-2","price":111.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410820005978,"sku":"BWCS-AUE36NB-3","price":121.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AUE36NB-1.webp?v=1779581181","url":"https:\/\/batteryweb.com\/products\/gateway-lt22-replacement-battery-108v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}