NEC Thermo Gear G30 Replacement Battery 7.4V 2200mAh

NEC Thermo Gear G30 / Shot F30 — 7.4V Li-ion Replacement Battery (T2UR18650F-5928)

This is a 7.4V 2200mAh Li-ion replacement battery for the NEC Thermo Gear G30 and Shot F30 handheld thermal imaging cameras. It matches OEM part number T2UR18650F-5928 and slots into both models using the same connector and BMS handshake. Capacity is 2200mAh (16.28Wh) — taken from product specification, not estimated.

• Thermo Gear G30 and Shot F30 compatibility: Both models share the same battery bay geometry, 7.4V nominal rail, and BMS communication protocol — one cell covers both. The connector orientation and locking tab are identical across the G30 and F30 production runs we have sourced.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on the G30 platform and confirmed the BMS reports state-of-charge correctly in the camera's battery indicator. No false-low warnings or premature cutoff events were triggered during the test sequence.
• Thermal camera power-off protocol: Before removing this battery in the field, allow the G30 to complete any active image capture or recording sequence and power down cleanly using the camera's shutdown button. Pulling the battery mid-operation can corrupt the onboard image log stored in RAM-backed memory.

Why the Thermo Gear G30 won't boot after a fresh battery install

The G30 boot sequence checks the cell voltage before releasing power to the display and IR sensor array. A new battery shipped in storage state may sit below the minimum boot threshold — typically around 6.8V on a 7.4V nominal cell. The camera will appear completely dead, showing no LED or screen activity, even though the battery is not faulty. Charge the replacement cell in the G30 for at least 30 minutes before attempting to power on.

G30 battery indicator dropping faster than expected during inspection work

The thermal sensor array and LCD together pull significantly more current than standby draw — active scanning sessions discharge the cell at a higher rate than the camera's idle estimate. If the battery indicator appears to jump from 80% to 20% quickly, the cell likely hasn't completed its first full conditioning cycle. Run two complete charge-to-discharge cycles under normal use before trusting the gauge. After conditioning, the BMS recalibrates its capacity baseline and the indicator stabilises.