About this replacement
ZTE Blade G / V765M Series — 3.7V Li-ion Replacement Battery (Li3715T42p3H634254)
This 3.7V 1500mAh Li-ion cell replaces part number Li3715T42p3H634254 in ZTE Blade G, V765M, Leo Q1, and V765 smartphones. It fits devices where the original cell has lost capacity and can no longer sustain normal daily loads. Dimensions are 63.40 × 42.10 × 5.70mm — confirm these against your existing cell before installation.
- Blade G / V765 platform compatibility: These models share the same battery bay dimensions, connector pinout, and 3.7V nominal voltage rail. The BMS handshake between phone and cell is passive on this platform — no cryptographic authentication to clear.
- Bench tested on actual hardware: We cycled this cell through charge and discharge under load representative of the Blade G's modem and display draw. The protection circuit tripped correctly at the low-voltage cutoff and accepted a full recharge without BMS lockout.
- Fuel gauge recalibration on first use: After fitting this cell, run one complete discharge to 5–10% and then a full uninterrupted charge to 100% before enabling any fast-charge option. The phone's coulomb counter is calibrated to the old cell's curve — skipping this step causes the gauge to report incorrect percentages from day one.
Sudden shutdown at 20–30% on the Blade G after a cell swap
The Blade G's fuel gauge IC was calibrated to the discharge curve of the original degraded cell. A new cell has a steeper voltage drop in the lower capacity range than the IC expects. When the phone's modem fires up for a call or data burst, the load pulls voltage below the shutdown threshold faster than the gauge predicts. The IC reads 25% remaining, but the actual cell voltage under load has already crossed the cutoff. One full discharge-charge cycle lets the coulomb counter re-anchor its curve to the new cell, and the premature shutdowns stop.
Phone feels warm near the battery during the first charge after replacement
A fresh Li-ion cell has higher internal impedance than a broken-in cell. On the first charge cycle, the phone's charge IC pushes current into that higher impedance, which generates more heat than you'd see on a used cell. This is normal and typically settles after one to two full cycles as the electrolyte distributes evenly across the electrode surfaces. If the warmth persists beyond the second full charge or the phone becomes hot to the touch, check that the battery connector is fully seated — a partial connection increases resistance at the contact point and can cause localised heating.