{"product_id":"asus-k009-replacement-battery-38v-3950mah-li-polymer","title":"Asus K009 Memo Pad 7 Replacement Battery 3.8V 3950mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAsus Memo Pad 7 ME571K \/ K009 — 3.8V Li-Polymer Replacement Battery (C11P1303)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 3950mAh Li-Polymer battery for the Asus Memo Pad 7, fitting the K009 and ME571K models. It replaces OEM part numbers C11P1303 and C11PNCH. If your tablet won't hold a charge, shuts down unexpectedly, or drains abnormally fast, this is the direct cell replacement.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK009 and ME571K compatibility:\u003c\/strong\u003e\n    Both models run the same 3.8V power rail, use an identical flex connector, and share the same charge IC handshake — one battery 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 full charge and discharge cycles on K009 hardware. The BMS accepted the charge IC handshake on the first cycle and protection thresholds triggered correctly at both high and low voltage limits.\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, then charge uninterrupted to 100% without interruption. This gives the fuel gauge IC a full reference curve against the new cell and clears the inaccurate percentage readings that commonly appear 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% after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ME571K and K009 use a fuel gauge IC that stores a charge curve learned from the previous cell. When a new cell goes in, the stored curve no longer matches actual cell voltage behaviour. Under combined display and WiFi load, voltage sags faster than the IC expects, and it triggers a shutdown before the real capacity is exhausted. One full discharge-to-shutoff followed by an uninterrupted charge to 100% resets the reference. After that cycle, shutdowns at 15–25% stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging unavailable after fitting a new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome K009 units report that fast charging stops working after a battery swap. The charge controller on this tablet requires at least one completed charge cycle before it re-negotiates current limits with the new cell's internal resistance profile. Plug in using the original Asus charger and let the first cycle run fully to 100% without unplugging early. After that cycle completes, fast charge availability returns to normal.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426053881946,"sku":"BWCS-AUK009SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426053914714,"sku":"BWCS-AUK009SL-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426053947482,"sku":"BWCS-AUK009SL-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AUK009SL-1.webp?v=1779930307","url":"https:\/\/batteryweb.com\/products\/asus-k009-replacement-battery-38v-3950mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}