{"product_id":"asus-memo-pad-8-replacement-battery-38v-3900mah-li-polymer","title":"Asus Memo Pad 8 Compatible Battery C11P1329 3.8V 3900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAsus Memo Pad 8 ME181C \/ ME181A — 3.8V Li-Polymer Replacement Battery (C11P1329)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.8V, 3900mAh Li-Polymer battery replaces part number C11P1329 in the Asus Memo Pad 8 tablet lineup. It fits the ME181C, ME181A, and AST21 variants, along with 22 additional Memo Pad 8 configurations sharing the same cell format. Dimensions are 101.00 x 98.10 x 2.80 mm — confirm clearance before ordering if your unit has been repaired previously.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eME181C and ME181A platform fit:\u003c\/strong\u003e\n    These models share a common PCB layout, connector pinout, and battery bay depth. The BMS handshake runs over the same three-pin configuration across the entire ME181 series, so one cell spec covers all variants listed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a ME181C unit and monitored the charge IC through a full cycle. The BMS accepted the new cell without error flags, and the protection circuit tripped correctly at both high-voltage cutoff and low-voltage floor.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after swap:\u003c\/strong\u003e\n    After fitting this battery, run the tablet down to automatic shutoff from a full charge — do not manually power it off. Then charge uninterrupted to 100%. This gives the fuel gauge IC a fixed reference point against the new cell and clears the inaccurate percentage readings that appear immediately post-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 Memo Pad 8 draws simultaneously from the display backlight and Wi-Fi radio under normal use. That combined load creates a brief voltage sag that the fuel gauge — still calibrated to the old, degraded cell — misreads as a critically low state of charge. The tablet's firmware triggers a protection shutdown before the actual cell voltage reaches cutoff. One full discharge-to-shutoff cycle followed by an uninterrupted charge to 100% resets the fuel gauge's discharge curve against the new cell and eliminates the premature cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging not available after fitting a new C11P1329 cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Memo Pad 8 uses a proprietary charge negotiation step between the charge IC and the battery's BMS. On a freshly installed cell, the charge IC defaults to a conservative current limit until it completes one accepted full charge cycle. Charging at the lower rate on the first cycle is normal behaviour, not a fault. Use the original Asus adapter for that first cycle — third-party adapters that don't assert the correct voltage handshake can leave the IC in slow-charge mode permanently.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426002468954,"sku":"BWCS-AUM181SL-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426002501722,"sku":"BWCS-AUM181SL-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426002534490,"sku":"BWCS-AUM181SL-3","price":50.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AUM181SL-1.webp?v=1779930196","url":"https:\/\/batteryweb.com\/products\/asus-memo-pad-8-replacement-battery-38v-3900mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}