{"product_id":"zte-blade-v7-max-replacement-battery-385v-3000mah-li-polymer","title":"ZTE Blade V7 Max Compatible Battery Li3930T44P8h866534 3.85V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eZTE Blade V7 Max — 3.85V Li-Polymer Replacement Battery (Li3930T44P8h866534)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.85V, 3000mAh lithium-polymer cell replaces the original battery in the ZTE Blade V7 Max and Blade V7 Max Dual SIM. It matches the OEM part number Li3930T44P8h866534 and fits the 85.00 × 64.72 × 3.26mm battery bay. Capacity is rated at 11.55Wh, in line with the factory specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBlade V7 Max and Dual SIM compatibility:\u003c\/strong\u003e\n    Both variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol. One cell covers both configurations — no adapter or modification needed.\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 V7 Max platform. The BMS accepted the cell without fault flags, the fuel gauge IC tracked state-of-charge across the full curve, and charge termination triggered correctly at 4.35V.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge protocol:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This allows the fuel gauge IC to recalibrate its coulomb counter against the new cell's actual discharge curve before high-current charging is introduced into an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Blade V7 Max shuts down suddenly at 20–30% after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Blade V7 Max uses a coulomb-counter fuel gauge IC that was calibrated to the original cell's internal resistance profile. A new cell has a different impedance curve, so the reported percentage diverges from true state-of-charge. When the modem fires a high-current burst or the display ramps brightness, voltage drops sharply below the BMS cutoff threshold — even though the gauge still reads 20–30%. One full discharge-charge cycle without fast charging corrects this by resetting the counter against the new cell's actual characteristics.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after the replacement cell sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-polymer cells self-discharge during storage, and if the voltage drops below approximately 2.5V per cell the BMS enters a lockout state to prevent damage. The phone will show no response when the power button is pressed. Connect the device to a wall charger — not a PC USB port — and leave it for 15–20 minutes before attempting to power on. Most BMS circuits re-initialise once the cell climbs back above 3.0V and the charger IC is delivering stable current.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392047743066,"sku":"BWCS-ZTV710SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392047775834,"sku":"BWCS-ZTV710SL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392047808602,"sku":"BWCS-ZTV710SL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZTV710SL-1.webp?v=1779143125","url":"https:\/\/batteryweb.com\/products\/zte-blade-v7-max-replacement-battery-385v-3000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}