{"product_id":"acer-aspire-4250-replacement-battery-111v-8800mah-li-ion","title":"Acer Aspire 4250 11.1V Replacement Battery 31CR19\/652","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAcer Aspire 4250 Series — 11.1V Li-ion Replacement Battery (AS10D31 \/ 31CR19\/652)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.1V, 8800mAh Li-ion battery replaces the original cell in the Acer Aspire 4250 and its variants, including the 4250-E352G50MI, 4250G, and 4250Z. It restores portable power to the notebook when the factory cell has degraded or failed. Capacity figure is 8800mAh (97.68Wh) as rated on this unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAspire 4250 series compatibility:\u003c\/strong\u003e\n    The Aspire 4250 family shares a common 11.1V three-cell rail and a standardised SMBus connector. All variants in this series use the same BMS handshake protocol, so one cell covers the full range of AS10D31, AS10D41, AS10D71, and related OEM part numbers 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 and discharge cycles on the Aspire platform. The BMS communicated correctly with the system, charge acceptance reached full capacity, and the protection circuit triggered cleanly at the low-voltage cutoff threshold without forcing a hard shutdown.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap calibration on the Aspire 4250:\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 typically 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 Aspire 4250 reports poor battery health immediately after a new cell is fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Aspire BIOS reads health data from EEPROM registers carried over from the old cell's communication history. When a new cell is installed, those registers don't match the fresh chemistry, so the BIOS flags it as degraded before any cycles have run. This is a firmware interpretation issue, not a fault with the replacement cell. One full discharge-to-hibernate followed by a complete uninterrupted charge gives the BIOS enough data to rewrite its health estimate accurately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAspire 4250 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 calibrated against the new cell's actual voltage curve. The OS reads a percentage from a table built around the old cell's discharge profile, so the displayed figure and real cell voltage diverge. Under full CPU and display load, the cell hits its low-voltage cutoff before the gauge reaches zero. Run two complete discharge-to-hibernate cycles followed by full charges — after that the gauge tracks the new cell's curve and the cutoff aligns with the displayed percentage, typically below 5%.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410738872410,"sku":"BWCS-AC4551DB-1","price":128.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410738905178,"sku":"BWCS-AC4551DB-2","price":147.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410738937946,"sku":"BWCS-AC4551DB-3","price":161.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AC4551DB-1.webp?v=1779580971","url":"https:\/\/batteryweb.com\/products\/acer-aspire-4250-replacement-battery-111v-8800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}