{"product_id":"huawei-ascend-mate-7-replacement-battery-38v-4000mah-li-polymer","title":"Huawei Ascend Mate 7 HB417094EBC Replacement Battery 3.8V 4000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHuawei Ascend Mate 7 — 3.8V Li-Polymer Replacement Battery (HB417094EBC)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 4000mAh Li-Polymer replacement battery for the Huawei Ascend Mate 7 smartphone. It fits the MT7-TL00, MT7-TL10, MT7-UL00, and related MT7-series variants. Capacity is 15.2Wh — matching the original cell specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMT7-series compatibility:\u003c\/strong\u003e\n    All MT7 variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol. This cell measures 92.80 × 68.67 × 4.02mm — correct for the Mate 7 chassis. No connector adapters or modifications needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through charge and discharge cycles on a Mate 7 unit. The BMS communicated correctly with the charge IC, accepted both standard and fast-charge current, and reported state-of-charge to the fuel gauge IC without triggering error flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first install:\u003c\/strong\u003e\n    On first use after fitting, disable fast charging and run one full discharge-to-charge cycle at standard current. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes power into an uncalibrated cell — preventing early percentage jumps.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on a replacement Mate 7 cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Mate 7's Kirin 925 SoC and the modem draw sharp current spikes during simultaneous LTE and screen-on use. A new cell with an uncalibrated fuel gauge IC can report 25% remaining while the actual resting voltage is already near the BMS low-voltage cutoff threshold. When the load spike hits, voltage drops below 3.4V per cell and the BMS cuts power instantly. One full discharge-charge cycle at standard current forces the coulomb counter to resync with the real cell capacity. After that cycle, shutdown events at false-low percentages typically stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHuawei fast charge not activating after a cell replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eHuawei's proprietary fast-charge protocol negotiates voltage and current limits between the charger, the charge IC on the board, and the BMS in the battery. On the first charge cycle with a new cell, the BMS may respond conservatively — limiting current to standard rates until it has completed one full calibration cycle. This is not a fault with the cell or the charger. Use the original Huawei wall adapter, complete one full standard-rate charge, then reconnect — fast charge typically resumes on the second cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404239601754,"sku":"BWCS-HUM700XL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404239634522,"sku":"BWCS-HUM700XL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404239667290,"sku":"BWCS-HUM700XL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HUM700XL-1.webp?v=1779369448","url":"https:\/\/batteryweb.com\/products\/huawei-ascend-mate-7-replacement-battery-38v-4000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}