{"product_id":"zte-blade-v-smart-replacement-battery-385v-4900mah-li-polymer","title":"ZTE Blade V Smart Li3949T44P8h906450 3.85V Compatible Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eZTE Blade V Smart \/ Blade 20 Smart — 3.85V Li-Polymer Replacement Battery (Li3949T44P8h906450)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 4900mAh (18.87Wh) Li-Polymer cell that replaces the original battery in the ZTE Blade V Smart, V1050, Blade 20 Smart, and Blade V2020 Smart. The OEM part number is Li3949T44P8h906450. If your phone shuts down unexpectedly, charges poorly, or won't hold power, this cell addresses a degraded or failed original unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBlade V Smart and V2020 Smart series fitment:\u003c\/strong\u003e\n    These models share a common battery bay geometry, connector pinout, and BMS handshake protocol. The Li3949T44P8h906450 cell is dimensioned at 86.70 × 62.75 × 5.00mm — any deviation causes housing pressure or connector misalignment, so confirm the OEM part number before ordering.\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 the Blade V Smart platform. The BMS accepted the charge handshake without fault codes on the first cycle, and cell voltage held stable under sustained screen-on and modem load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. The fuel gauge IC is calibrated to the old cell's discharge curve — letting it relearn against the new cell before high-current charging prevents percentage drift and premature low-battery warnings.\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 ZTE Blade V Smart after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new cell with an uncalibrated fuel gauge IC causes the phone to shut down well above 0% — typically between 15% and 30% reported charge. The coulomb counter still holds data from the old cell's voltage-capacity curve, so it misreads where the new cell's voltage cliff actually sits. Under modem transmit or screen-on load, the cell voltage drops faster than the IC predicts, and the phone cuts power to protect the circuit. Run one full discharge to automatic shutdown, then charge to 100% uninterrupted — after that cycle the IC maps the new cell and shutdowns at false percentages stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD or fast charge not activating on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ZTE charge IC negotiates fast-charge current with the BMS on the battery side before ramping voltage. On a freshly installed cell that hasn't completed a full cycle, the BMS can respond outside the expected timing window, causing the charge IC to fall back to standard 5V\/1A input. This isn't a fault with the charger or the cable. Charge the phone once at standard rate to completion, then reconnect — the BMS sync completes correctly on subsequent cycles and fast charge activates at the correct voltage step.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391820922970,"sku":"BWCS-ZTV105SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391820955738,"sku":"BWCS-ZTV105SL-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391820988506,"sku":"BWCS-ZTV105SL-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZTV105SL-1.webp?v=1779142283","url":"https:\/\/batteryweb.com\/products\/zte-blade-v-smart-replacement-battery-385v-4900mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}