Power station runtime calculator
Estimate how long a portable power station will run your appliances, as a range, with a start-up surge check for the model you pick.
Tools
Calculators
Free calculators for portable power stations: how long a station will run your appliances and what size you need for an outage.
In this section
What size power station do I need?
Pick what must keep running and for how long. The power station finder works out the battery size you need and shows models that pass output and surge checks.
Both tools run in your browser and use the same method as our runtime tables. The runtime calculator estimates how long a station will run what you plug in, and you can change its efficiency assumption. The power station finder starts from what must keep running and for how long, then shows the models that fit, with the assumption it uses stated under the result.