Battery Runtime + Duty Cycle

The Battery Runtime Calculator estimates how long a radio station can operate on battery power based on voltage, capacity, transmit and receive current, and duty cycle. This tool is useful for portable operations, emergency communications, and backup power planning.

Battery Runtime + Duty Cycle
Estimate battery runtime using duty cycle (basic planning)
Example: 12V 7Ah gel battery
HF mobile ≈ 10–25A, VHF mobile ≈ 8–12A
Typical voice nets: 10–30%
Losses in DC/DC, wiring, etc.
Enter values and calculate.
Basic estimation for planning. Real runtime varies with battery age, temperature, voltage sag, and radio settings.