{"product_id":"acer-aspire-one-d255-replacement-battery-111v-4400mah-li-ion","title":"Acer AL10A31 Aspire One D255 Replacement Battery 11.1V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAcer Aspire One D255 \/ D260 — 11.1V Li-ion Replacement Battery (AL10A31)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 11.1V, 4400mAh (48.84Wh) Li-ion battery for the Acer Aspire One D255 and D260 netbook series. It fits the original AL10A31 and AL10B31 battery positions, along with a wide range of compatible OEM part numbers listed above. Connector alignment and cell format match the factory tray on these compact netbooks.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eD255 and D260 platform fit:\u003c\/strong\u003e\n    Both models share the same battery bay dimensions, 11.1V rail, and BMS handshake protocol — this cell covers the full production run of both. The connector pinout and PCB lock tab are identical across all D255 and D260 variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a D255 board and confirmed BMS communication across charge, discharge, and standby states. The protection circuit tripped correctly at low-voltage cutoff without requiring a manual reset.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the D255\/D260:\u003c\/strong\u003e\n    After fitting this battery, run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the false health warning that appears after every cell swap on these netbooks.\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 One D255 reports poor battery health immediately after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe D255 BIOS stores learned capacity data from the previous cell in EEPROM. When a new battery is installed, that stored data no longer matches the actual cell, so the system flags the battery as degraded or unknown. This is not a fault with the replacement cell — it is a calibration mismatch. One full discharge-to-hibernate followed by a complete uninterrupted charge allows the BIOS to rewrite the learn cycle against the new chemistry. After that single cycle, health reporting should normalise.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAspire One D255 shutting down at 20–30% charge shown\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on these netbooks calibrates its empty-point estimate against the old cell's voltage curve. When the new cell drops voltage faster under combined CPU and display load, the IC calls empty earlier than the percentage shown. The netbook shuts down because the real terminal voltage hits the hardware cutoff before the gauge catches up. Run two or three full discharge-to-charge cycles to let the gauge IC re-map its curve against the new cell — shutdowns should move to below 5% remaining after calibration.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410790056026,"sku":"BWCS-AC260NB-1","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410790088794,"sku":"BWCS-AC260NB-2","price":111.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410790121562,"sku":"BWCS-AC260NB-3","price":121.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AC260NB-1.webp?v=1779581090","url":"https:\/\/batteryweb.com\/products\/acer-aspire-one-d255-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}