{"product_id":"acer-iconia-one-10-b3-a40-replacement-battery-37v-6000mah-li-polymer","title":"Acer Iconia One 10 B3-A40 Replacement Battery 3.7V 6000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAcer Iconia One 10 B3-A40 — 3.7V Li-Polymer Replacement Battery (PR-279594N)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 6000mAh Li-Polymer replacement battery for the Acer Iconia One 10 B3-A40 tablet. It replaces OEM part PR-279594N and fits the 10-inch Android tablet directly. Swap it when the original cell no longer holds a charge or shuts the tablet down unexpectedly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eB3-A40 fit:\u003c\/strong\u003e\n    The B3-A40 uses a flat Li-Polymer pouch cell at 3.7V nominal. This unit matches the original connector pinout and BMS handshake so the tablet's charge controller recognises it without errors on boot.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran a full charge cycle and monitored BMS behaviour through charge termination. The protection circuit responded correctly to trickle, constant-current, and CV phases with no thermal trip or error flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after swap:\u003c\/strong\u003e\n    After fitting this battery, run one full discharge to automatic shutoff, then charge uninterrupted to 100%. This resets the fuel gauge IC calibration against the new cell and clears the inaccurate percentage readings that appear immediately after installation.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTablet shutting down at 15–25% remaining after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe B3-A40 draws hard when the display is at full brightness and WiFi is active together. That combined load causes a voltage sag that trips the BMS cutoff threshold before the fuel gauge reaches zero. The old cell's discharge curve is still mapped in firmware, so the percentage shown does not match the new cell's actual state of charge. Run one full discharge-to-shutoff cycle followed by an uninterrupted charge to 100% — this re-maps the curve and stops premature cutoffs.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging unavailable after fitting a replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe B3-A40 charge IC re-negotiates charge current on the first accepted cycle with a new cell. Until that cycle completes, the controller defaults to standard 5V charging as a precaution. This is normal behaviour — not a fault with the battery or the charger. Charge the tablet fully once using the original Acer adapter and fast charging will re-enable on the next session.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43425837121626,"sku":"BWCS-ACB340SL-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43425837154394,"sku":"BWCS-ACB340SL-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43425837187162,"sku":"BWCS-ACB340SL-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ACB340SL-1.webp?v=1779929902","url":"https:\/\/batteryweb.com\/products\/acer-iconia-one-10-b3-a40-replacement-battery-37v-6000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}