{"product_id":"acer-iconia-tab-10-a3-a20-replacement-battery-38v-5900mah-li-polymer","title":"Acer Iconia Tab 10 A3-A20 Replacement Battery AP14A8M 3.8V 5900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAcer Iconia Tab 10 A3-A20 — 3.8V Li-Polymer Replacement Battery (AP14A8M)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 5900mAh Li-Polymer replacement battery for the Acer Iconia Tab 10 A3-A20 and A3-A20FHD 10-inch Android tablets. It also fits the SW5-011 and SW5-012 models. OEM part numbers AP14A8M, KT.0020G.004, and AP14A4M all cross to this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eA3-A20 and SW5 series fit:\u003c\/strong\u003e\n    The A3-A20, A3-A20FHD, SW5-011, and SW5-012 share the same 3.8V Li-Polymer cell format, connector pinout, and BMS communication protocol — one battery covers all four variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through charge and discharge on the A3-A20 platform. The BMS handshake completed without fault codes, charge acceptance was clean from 0% to 100%, and cell voltage held within spec under combined display and Wi-Fi load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge reset after installation:\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 a swap.\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 replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe A3-A20 draws hard on the battery when the display is at full brightness and Wi-Fi is active simultaneously. If the fuel gauge IC is still calibrated to the old degraded cell, it misreads the new cell's voltage curve and triggers a low-voltage shutdown well before actual depletion. This is not a faulty battery — it is a calibration mismatch. Run one full discharge to automatic shutoff followed by an uninterrupted charge to 100%, and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging unavailable after fitting a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe A3-A20's charge IC negotiates charging rate over the first accepted charge cycle after a new cell is installed. Until that cycle completes, the tablet may default to standard 5V charging and ignore USB-PD input. This is normal behaviour — it is not a charger fault or a compatibility issue. Complete one full charge from near-zero to 100% using the original Acer charger, and fast charge negotiation re-enables at the start of the next session.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426019246170,"sku":"BWCS-ACW100SL-1","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426019278938,"sku":"BWCS-ACW100SL-2","price":60.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426019311706,"sku":"BWCS-ACW100SL-3","price":67.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ACW100SL-1.webp?v=1779930195","url":"https:\/\/batteryweb.com\/products\/acer-iconia-tab-10-a3-a20-replacement-battery-38v-5900mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}