{"product_id":"acer-acernote-a-series-replacement-battery-12v-3800mah-ni-mh","title":"Acer AcerNote A Series DR36 Replacement Battery 12V 3800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAcer AcerNote A Series — 12V Ni-MH Replacement Battery (DR36)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 3800mAh (45.6Wh) Ni-MH replacement battery for the Acer AcerNote A Series notebook computers. It fits models that take the DR36 or DR36S battery pack. It restores off-AC operation to these vintage Acer portables when the original cell has degraded past useful capacity.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAcerNote A Series fit:\u003c\/strong\u003e\n    All models in this line share the same 12V power rail, physical form factor, and connector pinout — that's why a single part number 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 cycled this cell through full charge and discharge on AcerNote A Series hardware. The BMS accepted the pack without fault codes, and the charge circuit completed normally through all stages.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-install cycle reset:\u003c\/strong\u003e\n    After fitting this battery, run a full discharge down to hibernate cutoff, then charge uninterrupted to 100%. Ni-MH cells in this platform require that full learn cycle for the BIOS to recalibrate its capacity reference — skipping it leaves an inaccurate health warning on screen after every swap.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the AcerNote A Series shuts down at 20–30% charge shown\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a BIOS bug. Under combined CPU and display load, the Ni-MH cell voltage drops faster than the fuel gauge IC can track against its stored reference data. The system hits the low-voltage cutoff threshold while the gauge still reads 20–30%. Running one full calibration cycle — discharge to hibernate cutoff, then a clean uninterrupted charge — aligns the gauge IC reference to the actual cell chemistry and clears the premature shutdown.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting battery health as poor or unknown after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe BIOS reads health data from EEPROM registers that were written by the original cell over its lifetime. A new cell arrives with fresh EEPROM values that don't match the degraded baseline the BIOS expects, so it flags the pack as unknown or poor. This is not a fault with the replacement battery. Run the battery learn cycle — one full discharge to hibernate cutoff followed by a full charge — and the BIOS will rewrite its reference against the new cell. Health reporting normalises after one to two complete cycles.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410857721946,"sku":"BWCS-DR36HB-1","price":89.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43410857754714,"sku":"BWCS-DR36HB-2","price":105.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43410857787482,"sku":"BWCS-DR36HB-3","price":118.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DR36HB-big.webp?v=1779581376","url":"https:\/\/batteryweb.com\/products\/acer-acernote-a-series-replacement-battery-12v-3800mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}