Firefighting helicopters are equipped with an external power source capable of providing 24V DC, 4800 mAh power, which can be charged using 110V and 220V mains electricity without relying on the electrical infrastructure of the helicopter. This eliminates the need for any additional modifications to the helicopter. However, if desired, the power source can be equipped to integrate with the helicopter, and the necessary connector structures are available for connection to the helicopter.

The external power source includes an emergency button, a 10-amp circuit breaker, digital voltmeter, and counter indicators. This allows monitoring of charging status and the number of discharges.