{"product_id":"asus-eee-pad-memo-ep71-replacement-battery-37v-4400mah-li-polymer","title":"Asus Eee Pad MeMo EP71 C11-EP71 Compatible Battery 3.7V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAsus Eee Pad MeMo EP71 — 3.7V Li-Polymer Replacement Battery (C11-EP71)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 4400mAh Li-Polymer replacement battery for the Asus Eee Pad MeMo EP71 tablet. It fits the EP71 and N71PNG3 variants and uses the OEM part number C11-EP71. It replaces a degraded or failed original cell and restores the tablet to full operating capacity.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEP71 and N71PNG3 compatibility:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, 3.7V power rail, and C11-EP71 connector pinout. The BMS on each variant reads cell voltage via the same fuel gauge IC, so one cell fits both 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 EP71 platform. The BMS accepted the cell without fault codes, and the charge IC brought it to full voltage without thermal events or interruptions.\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 against the new cell's actual capacity and clears the inaccurate percentage readings that appear immediately after a battery 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\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC is still calibrated to the old cell's voltage curve. When the display, WiFi, and processor pull current simultaneously, the combined load causes a sharp voltage drop. The IC misreads this drop as a critically low state of charge and triggers shutdown before the cell is actually empty. One full discharge-to-shutoff cycle followed by an uninterrupted charge to 100% resets the reference points and resolves the early cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eEP71 reporting incorrect battery percentage after cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe onboard fuel gauge IC stores learned capacity data from the old cell. A new cell with different internal resistance shifts the voltage-to-percentage mapping, so the displayed figure is wrong from the first boot. The fix is one complete recalibration cycle: discharge the tablet fully until it shuts itself off, then charge to 100% without interruption. After that cycle, the percentage display tracks actual cell voltage accurately at 3.7V nominal.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426075902042,"sku":"BWCS-AUP710SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426075934810,"sku":"BWCS-AUP710SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426075967578,"sku":"BWCS-AUP710SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AUP710SL-1.webp?v=1779930307","url":"https:\/\/batteryweb.com\/products\/asus-eee-pad-memo-ep71-replacement-battery-37v-4400mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}