{"product_id":"huawei-mediapad-m5-108-replacement-battery-385v-7350mah-li-polymer","title":"Huawei MediaPad M5 10.8 Replacement Battery HB2994i8ECW 3.85V 7350mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHuawei MediaPad M5 10.8 \/ CMR-AL09 \/ M5 Pro CMR-AL19 — 3.85V Li-Polymer Replacement Battery (HB2994i8ECW)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 7350mAh (28.3Wh) Li-Polymer replacement battery for the Huawei MediaPad M5 10.8 and MediaPad M5 Pro 10.8 tablets, covering model numbers CMR-AL09 and CMR-AL19. It replaces the original HB2994i8ECW cell when the factory battery no longer holds charge or the tablet fails to power on. The cell dimensions are 186.20 × 93.40 × 2.60mm, matching the original battery bay exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCMR-AL09 and CMR-AL19 compatibility:\u003c\/strong\u003e\n    Both the standard M5 10.8 and the M5 Pro share the same battery bay dimensions, connector pinout, and BMS communication protocol — that's why one part number covers both variants. The charge IC on each model reads the same cell identification data, so no firmware workaround is needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a CMR-AL09 unit and monitored BMS handshake, charge termination voltage, and thermal behaviour across a full charge and discharge. The BMS accepted the cell without error flags and terminated charge cleanly at 4.35V.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after install:\u003c\/strong\u003e\n    After fitting this battery, run the tablet down to automatic shutoff — do not force it off — then charge uninterrupted to 100% without using the device. This gives the fuel gauge IC a full reference cycle against the new cell and corrects the inaccurate percentage readings that typically appear after a battery swap.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the MediaPad M5 shuts down between 15% and 25% remaining\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe M5's charge IC uses a voltage map built on the original cell's discharge curve. When the new cell's actual voltage at a given state-of-charge differs from that stored map, the system reads a false low-voltage condition and triggers an emergency cutoff. This is most pronounced when the display is at full brightness and Wi-Fi is active simultaneously — both draw current in short bursts that cause brief voltage sag, which the miscalibrated fuel gauge interprets as near-empty. Running one full discharge-to-shutoff cycle followed by an uninterrupted charge to 100% rewrites the reference map. After that single cycle, shutdowns at 15–25% typically stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging not available after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe M5 Pro uses Huawei's proprietary SuperCharge protocol, which requires the charge IC to complete at least one accepted charge cycle before it re-enables fast charge handshaking with a SuperCharge adapter. If you plug in immediately after installation and see only standard charge speeds, that is expected. Charge the tablet to 100% using the original Huawei charger, let it complete fully, then unplug and replug — fast charge negotiation should resume on the second connection. Confirm by checking the lock screen, which displays \"Charging rapidly\" when SuperCharge is active.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43425824145498,"sku":"BWCS-HUM518SL-1","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43425824178266,"sku":"BWCS-HUM518SL-2","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43425824211034,"sku":"BWCS-HUM518SL-3","price":59.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HUM518SL-1.webp?v=1779929837","url":"https:\/\/batteryweb.com\/products\/huawei-mediapad-m5-108-replacement-battery-385v-7350mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}