This is a Teltonika BAT120 industrial-Grade uninterruptible power supply (UPS) featuring a rugged black aluminum housing.
It is designed to provide up to 6 hours of backup power for compatible Teltonika devices during power outages.
The unit includes two 4-pin DC ports for power input (9-30 VDC) and output (12 VDC when on battery).
It contains two 18650 Li-ion cells with a total capacity of 2600 mAh (17 Wh).