{"product_id":"acer-aspire-timeline-1810t-8679-replacement-battery-108v-4400mah-li-ion","title":"Acer Aspire 1810T UM09E36 Replacement Battery 10.8V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAcer Aspire Timeline 1810T Series — 10.8V Li-ion Replacement Battery (UM09E36)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 4400mAh Li-ion replacement battery for the Acer Aspire Timeline 1810T-8679 and related AS1410 series ultraportable laptops. It replaces OEM part numbers UM09E36, UM09E78, UM09E51, and over 20 additional Acer part variants. Fit the battery when the original no longer holds a charge or BIOS flags it as degraded.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTimeline 1810T and AS1410 compatibility:\u003c\/strong\u003e\n    These models share the same 10.8V three-cell battery rail, connector pinout, and BMS handshake protocol — one cell spec covers the full range of AS1410 and 1810T variants without modification.\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 the 1810T platform. The BMS reported correct voltage at every state-of-charge checkpoint, and the BIOS battery status cleared without error after one learn cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the 1810T:\u003c\/strong\u003e\n    After fitting this battery, run the laptop on battery power until it hibernates at low charge, then charge uninterrupted to 100%. This forces the BIOS to run a fresh learn cycle 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 immediately after fitting the new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Acer Timeline BIOS stores charge history and wear data in the previous battery's EEPROM. When a new cell goes in, the BIOS reads no history and flags health as unknown or poor. This is not a fault with the replacement cell — it is a data mismatch. Run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. After two to three cycles, the BIOS recalibrates and the health warning clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell cannot sustain voltage under combined CPU and display load as it approaches the lower end of its charge curve. The fuel gauge IC read the resting cell voltage as 20–30%, but under load the voltage drops sharply below the BMS cutoff threshold. The fix is a full calibration cycle — discharge fully to hibernate, then charge to 100% without interruption. After two cycles the fuel gauge maps the new cell's voltage curve accurately and the early shutdown stops.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410820104282,"sku":"BWCS-AUE36NB-1","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410820137050,"sku":"BWCS-AUE36NB-2","price":111.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410820169818,"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\/acer-aspire-timeline-1810t-8679-replacement-battery-108v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}