{"product_id":"acer-aspire-v5-171-replacement-battery-111v-4400mah-li-ion","title":"Acer Aspire V5-171 Compatible Battery 11.1V 4400mAh AL12B32","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAcer Aspire V5-171 \/ One 725 \/ One 756 — 11.1V Li-ion Replacement Battery (AL12B32)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 4400mAh (48.84Wh) Li-ion battery for the Acer Aspire V5-171, Aspire One 725, Aspire One 756, and Chromebook AC710. It replaces OEM part numbers AL12B32, AL12B72, KT.00407.002, KT.00403.004, AL12B31, and AL12X32. If your original cell no longer holds a charge or the laptop shuts off unexpectedly, this is a direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAspire V5-171 and One 7xx series compatibility:\u003c\/strong\u003e\n    These models share the same 11.1V three-cell rail, identical connector pinout, and matching BMS communication protocol — which is why a single part number covers all of them. The BMS on each platform expects the same voltage thresholds and cell-count handshake.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on an Aspire V5-171 chassis. The BMS accepted the new cell without fault codes, charge current ramped correctly through CC and CV phases, and the protection circuit tripped cleanly at the expected low-voltage cutoff during discharge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the V5-171:\u003c\/strong\u003e\n    After fitting this battery, run one full discharge down to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears on the first boot after any cell 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 Aspire V5-171 BIOS reports \"poor battery health\" after a new cell is fitted\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe V5-171 BIOS reads health data from the battery's EEPROM, which stores charge-cycle count and rated capacity from the previous cell. When a new cell goes in, the EEPROM data doesn't automatically reset — the BIOS compares the new cell's actual charge against the old cell's stored history and flags a mismatch as poor health. This is a firmware interpretation issue, not a fault with the replacement cell. Running one full discharge-to-hibernate then an uninterrupted charge to 100% forces the BIOS to re-write the battery learn table against the new cell. After two to three cycles, the health indicator typically resolves to normal.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAspire V5-171 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 yet calibrated against the new cell's actual voltage curve. The IC is still using the discharge profile from the old, degraded cell — so it triggers a low-battery shutdown well before the new cell is actually depleted. The fix is the same calibration cycle: drain the battery fully to hibernate cutoff, then charge to 100% without interruption. After two full cycles, the fuel gauge re-maps the voltage-to-percentage curve and the early shutdowns stop. If it persists past three cycles, check that the BIOS is not running a capped charge-limit profile — navigate to BIOS power settings and confirm the charge ceiling is set to 100%.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409787256922,"sku":"BWCS-ACB113HB-1","price":111.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409787289690,"sku":"BWCS-ACB113HB-2","price":127.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409787322458,"sku":"BWCS-ACB113HB-3","price":139.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ACB113HB-1.webp?v=1779580871","url":"https:\/\/batteryweb.com\/products\/acer-aspire-v5-171-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}