Battery runtime
Estimate operating time from capacity, load and duty cycle.
Estimated runtime--
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Radio Battery Runtime Calculator
Estimate portable radio operating time from battery capacity, current, duty cycle and usable capacity.
About this calculator
How to use it
Enter battery capacity, average load current, transmit duty cycle and the usable percentage of rated capacity.
Understanding the result
Temperature, battery age, receive current and high-current voltage sag can shorten real runtime. Treat the answer as a planning estimate.
More ham radio calculators
Use this calculator as a practical starting point. Check critical radio, electrical and installation work with suitable test equipment and current licence requirements.