ENERGY & BACKUP POWER · FREE INTERACTIVE TOOL
Power Station Runtime Calculator
How long can a portable power station run your router, computer or fridge?
A useful planning estimate is energy available divided by average energy demand. The product spec, power draw and surge capability still matter.
Adjust the assumptions
Editable illustration — use your own actual numbers.
Your estimate
Updates instantly, stays on your device.
For essential medical or safety-critical devices, consult product guidance and prepare independent backup capacity; do not rely on this estimate.
Before you decide
Can I run a refrigerator?
Check the fridge compressor startup surge, the station AC output limit, and the average consumption over time. A guessed duty cycle can be misleading.
Why does actual runtime differ?
Idle inverter consumption, temperature, battery health, power factor, device spikes and BMS cutoff can lower real runtime.
Other free calculators
Plan every device before the power goes out
Not just a single-wattage runtime: add your router, laptop, lights and fridge. Check Wh capacity and possible startup surges.
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