{"product_id":"huawei-t2211-replacement-battery-37v-1000mah-li-ion","title":"Huawei HB4H1 Fit T2211 Replacement Battery 3.7V 1000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHuawei Fit T2211 Series — 3.7V Li-ion Replacement Battery (HB4H1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1000mAh Li-ion cell replacing the OEM HB4H1 battery in the Huawei Fit smartwatch. It fits the T2211, T2251, T1600, and T2281 along with three additional models in the same watch family. Voltage, physical dimensions (59.67 × 39.66 × 4.26mm), and connector orientation match the original unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eT2211 \/ T2251 \/ T1600 \/ T2281 compatibility:\u003c\/strong\u003e\n    These models share the same watch platform, PCB layout, and BMS handshake protocol, so they all take the HB4H1 cell. The connector pinout and charge termination voltage are identical across the lineup.\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 T2211 unit. The BMS accepted the cell without rejecting charge current, and the watch completed a full charge cycle without triggering overcurrent protection.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    Disable fast charging for the first complete discharge-charge cycle after fitting this cell. The fuel gauge IC on the Fit series uses a stored discharge curve from the old cell — one full uninterrupted cycle at standard current lets it recalibrate against the new cell before resuming normal operation.\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 the Huawei Fit after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC is still mapped to the old cell's discharge curve. When the new cell hits a voltage point the IC interprets as 20–30%, the actual cell voltage may already be dropping steeply under load from the heart rate sensor or display. The watch shuts down to protect the cell, even though the reported percentage looks safe. One full discharge-to-5% and charge-to-100% cycle at standard current resets the coulomb counter and eliminates the early cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHuawei Fit not powering on after sitting in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA watch stored with a depleted cell can drop below the BMS lockout threshold of approximately 2.5V per cell. At that point the BMS opens the protection circuit and the watch shows no response at all — not even a low-battery screen. Connect the watch to a 5V USB charger and leave it untouched for 15–20 minutes. The charge IC trickle-charges the cell back above the lockout voltage before the BMS resets and allows normal charging to resume.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405084885082,"sku":"BWCS-HUT211SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405084917850,"sku":"BWCS-HUT211SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405084950618,"sku":"BWCS-HUT211SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HUT211SL-1.webp?v=1779369919","url":"https:\/\/batteryweb.com\/products\/huawei-t2211-replacement-battery-37v-1000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}