ZTE G717C Li-Polymer Replacement Battery 3.8V 2300mAh

ZTE G717C / Nubia Z7 Mini — 3.8V Li-Polymer Replacement Battery (Li3823T43PhA54236)

This 3.8V, 2300mAh Li-Polymer cell replaces the original battery in the ZTE G717C, G718C, Nubia Z7 Mini, and Nubia Z7 Mini Dual SIM. It uses OEM part number Li3823T43PhA54236 and its variants. Swap it in when the original cell no longer holds a useful charge or fails to power the device at all.

• G717C and Nubia Z7 Mini platform: These models share the same battery bay dimensions and 3.8V nominal rail. The connector pinout and BMS communication protocol are identical across the G717C, G718C, and Z7 Mini variants, so one cell covers the full range.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the G717C platform. The BMS accepted the handshake on the first cycle, thermal sensors reported within normal range, and the protection circuit tripped correctly at the low-voltage cutoff threshold.
• Fuel gauge recalibration on first use: After fitting this cell, disable fast charging and run one complete discharge-to-charge cycle at standard rate. The fuel gauge IC in these ZTE models calibrates its coulomb counter against the cell's actual discharge curve — skipping this step leaves the gauge reading against the old curve, which causes erratic percentage jumps early on.

Sudden shutdown at 20–30% on the Nubia Z7 Mini after a cell swap

This is a voltage cliff problem, not a capacity problem. Under peak modem load or screen-on bursts, a new cell with an uncalibrated fuel gauge can hit a voltage sag that triggers the protection circuit before the display percentage reaches zero. The phone sees a hard undervoltage event and cuts out, even though the gauge still shows charge remaining. One full discharge cycle at standard rate — down to automatic shutdown, then a full charge — gives the fuel gauge IC enough data to map the new cell's voltage curve accurately. After that cycle, the shutdowns stop.

ZTE G717C not powering on after sitting in storage

Li-Polymer cells that sit discharged for weeks can drop below 2.5V per cell, which triggers a BMS lockout designed to prevent charging a critically depleted cell at full current. The phone will show nothing on screen and may not respond to the charger for several minutes. Connect the device to a wall adapter — not a PC USB port — and leave it for 15–20 minutes without pressing any buttons. The BMS recovery circuit trickle-charges the cell back above the 2.8V reinitialisation threshold before allowing normal charge current to flow.