ZTE Blade A30 Replacement Battery LI3822T43P3H716043 3.8V 2000mAh

ZTE Blade A30 / A320 / L7 — 3.8V Li-ion Replacement Battery (LI3822T43P3H716043)

This is a 3.8V Li-ion cell rated at 2000mAh (7.6Wh), matched to the OEM part number LI3822T43P3H716043. It fits the ZTE Blade A30, Blade A320, and Blade L7 smartphones. If your original cell has swollen, fails to hold charge, or causes unexpected shutdowns, this is the direct replacement.

• Blade A30 / A320 / L7 platform fit: These three models share the same 3.8V battery bay dimensions (71.00 × 60.00 × 4.20mm), connector pinout, and BMS handshake protocol — which is why one cell covers all three. Swapping between these models carries no compatibility risk at the hardware level.
• Bench tested on actual hardware: We cycled this cell through full charge and load discharge on a ZTE Blade A30 unit. The BMS accepted the cell without error flags, the charge IC ramped normally, and the protection circuit tripped correctly at the low-voltage cutoff threshold.
• Fuel gauge recalibration on first use: On first use after installation, disable fast charging and run one full discharge-to-charge cycle. This gives the fuel gauge IC time to map the new cell's discharge curve before high-current charging pushes into an uncalibrated state — which is what causes early erratic percentage readings.

Sudden shutdown at 20–30% on the Blade A30 after a cell swap

This happens when the fuel gauge IC is still running a calibration curve from the old, degraded cell. The new cell's actual voltage under modem or display load drops faster than the IC expects at that state-of-charge, so the protection circuit cuts power before the reported percentage reaches zero. It is not a faulty replacement cell — it is a mismatch between the stored discharge model and the new cell's real curve. Run two full discharge-to-charge cycles without interruption and the IC will update its internal model. After the second cycle, shutdowns below 15% should stop.

Phone warm near the battery bay on the first charge after replacement

A new cell starts with higher internal impedance than a broken-in cell. The charge IC on the Blade A30 pushes the same current it was calibrated for on the original cell, but higher impedance means more heat dissipated across the cell during the constant-current phase. This is normal for the first one or two cycles and reduces as impedance drops with use. If the phone still runs noticeably warm by the third charge, check that the replacement cell is seated flat with no gap between the cell and the rear chassis — an air gap reduces heat transfer to the back cover and concentrates heat in the cell itself.