Use the online calculator below to work out the estimated battery bank (Ah) and solar array size (watts) for your 12 volt off-grid solar application. This is basically the battery size and solar panel size calculators combined into one tool.
To use the calculator you need the following information:
- average sunshine hours for your location
- the combined power consumption of your appliance(s) (W). Check the power brick label for the Volts and Amps. To obtain the Watts, use the formula Volts x Amps = Watts.
- how many hours your appliance will be running for
Note: This is for a 12 volt system only. The results of this calculator should only serve as a guide.