{"product_id":"huawei-mediapad-x1-70-replacement-battery-38v-4850mah-li-polymer","title":"Huawei MediaPad X1 7.0 Replacement Battery HB3873E2EBC","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHuawei MediaPad X1 7.0 — 3.8V Li-Polymer Replacement Battery (HB3873E2EBC)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 4850mAh (18.43Wh) lithium-polymer replacement battery for the Huawei MediaPad X1 7.0 tablet. It fits models 7D-501L, 7D-501U, and the MediaPad X1 7.0 LTE variants. OEM part numbers HB3873E2EBC and HB3873E2EBW both apply to this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMediaPad X1 7.0 compatibility:\u003c\/strong\u003e\n    The 7D-501L and 7D-501U share the same battery bay dimensions, connector pinout, and BMS handshake protocol. All listed variants pull from the same 3.8V rail, so one cell covers the full model range without adaptation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on a MediaPad X1 unit. The BMS accepted the cell on first connection, completed a full charge cycle without fault codes, and held voltage within spec under display-plus-WiFi combined load.\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 using the device. 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\n  \u003cp class=\"bpw-desc-p\"\u003eThe MediaPad X1's display backlight and WiFi radio draw current simultaneously, creating a combined load spike the fuel gauge misreads as a voltage cliff. The old cell's calibration data is still in the charge IC when a new battery goes in. At around 15–25% reported charge, the voltage under that combined load drops faster than the IC expects, triggering a protective shutdown. One full discharge-to-shutoff cycle followed by an uninterrupted charge to 100% rewrites the calibration curve and eliminates these early shutdowns.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging not available after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eHuawei's proprietary fast-charge protocol requires the charge IC and battery BMS to complete a handshake during the first accepted charge cycle. If the tablet reverts to standard 5V charging after a battery swap, the handshake has not yet completed. Plug in the original Huawei charger — not a third-party USB-C adapter — and let the tablet charge from near-empty to 100% without interruption. After that single full cycle, fast charging resumes at the negotiated voltage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426053161050,"sku":"BWCS-HUX170SL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426053193818,"sku":"BWCS-HUX170SL-2","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426053226586,"sku":"BWCS-HUX170SL-3","price":42.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HUX170SL-1.webp?v=1779930307","url":"https:\/\/batteryweb.com\/products\/huawei-mediapad-x1-70-replacement-battery-38v-4850mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}