{"product_id":"huawei-mediapad-replacement-battery-37v-4000mah-li-polymer","title":"Huawei MediaPad HB3G1H Replacement Battery 3.7V 4000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHuawei MediaPad 7 Lite Series — 3.7V Li-Polymer Replacement Battery (HB3G1H)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 4000mAh Li-Polymer replacement battery for the Huawei MediaPad and MediaPad 7 Lite tablet range, including the S7-301U. It slots into models that take the OEM part HB3G1H. If your original cell no longer holds charge after extended use, this is the direct replacement.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMediaPad 7 Lite compatibility:\u003c\/strong\u003e\n    The S7-301U and related MediaPad variants share the same 3.7V battery rail, connector pinout, and BMS handshake. The HB3G1H part number covers the full group, so one cell fits across the listed models 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 a MediaPad S7-301U unit. The tablet's charge IC accepted the cell without fault flags, and the BMS communicated state-of-charge data correctly to the OS throughout testing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after swap:\u003c\/strong\u003e\n    After installing this battery, run one full discharge to automatic shutoff, then charge uninterrupted to 100%. The MediaPad's fuel gauge IC calibrates against the new cell during this cycle and corrects the inaccurate percentage readings that typically 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% after battery replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC is still calibrated to the old cell's voltage curve. The MediaPad combines display backlight and WiFi radio draws under load, which creates a voltage dip the gauge misreads as a critical low. The tablet triggers a protective shutdown even though usable capacity remains. One full discharge-to-shutoff cycle followed by an uninterrupted charge to 100% resets the reference point — after that, shutdowns should track correctly at or below 5%.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging unavailable after battery swap on MediaPad 7 Lite\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe MediaPad's charge controller uses a handshake with the charger during the first accepted charge cycle to enable higher-rate charging. A new cell can interrupt this negotiation on the first connection. Plug the tablet into the original Huawei charger — not a generic USB adapter — and let it complete one full charge without disconnecting. After that cycle completes to 100%, the charge IC re-establishes the protocol and fast charge becomes available again.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426087108698,"sku":"BWCS-HUS730SL-1","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426087141466,"sku":"BWCS-HUS730SL-2","price":36.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426087174234,"sku":"BWCS-HUS730SL-3","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HUS730SL-1.webp?v=1779930307","url":"https:\/\/batteryweb.com\/products\/huawei-mediapad-replacement-battery-37v-4000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}