Portable Power Station Runtime Chart
Compare estimated runtime across common power-station capacities and appliance loads.
Compare estimated runtime across common power-station capacities and appliance loads.
Enter your own equipment values. The calculator uses transparent assumptions so you can adjust efficiency, reserve and operating conditions.
Use Real Equipment Ratings
Compare estimated runtime across common power-station capacities and appliance loads.
Calculator Guidance
Use the result for planning, then verify the exact product manual, nameplate ratings and operating limits.
Portable Power Station Runtime Estimator
Planning estimate only.
Runtime Chart Formula
Estimated runtime equals rated watt-hours multiplied by usable efficiency, divided by average device watts.
Portable Power Station Runtime Chart
| Capacity | 20W | 60W | 100W | 200W | 500W | 1000W |
|---|---|---|---|---|---|---|
| 256Wh | 10.9h | 3.6h | 2.2h | 1.1h | 0.4h | 0.2h |
| 512Wh | 21.8h | 7.3h | 4.4h | 2.2h | 0.9h | 0.4h |
| 1024Wh | 43.5h | 14.5h | 8.7h | 4.4h | 1.7h | 0.9h |
| 2048Wh | 87.0h | 29.0h | 17.4h | 8.7h | 3.5h | 1.7h |
| 4096Wh | 174.1h | 58.0h | 34.8h | 17.4h | 7.0h | 3.5h |
How to Read the Chart
Use Average Watts
Nameplate maximum can overstate consumption.
Check Output Limit
The station must also support surge.
AC vs DC
DC outputs often avoid inverter losses.
Temperature
Cold conditions reduce capacity.
Pass-Through Use
Charging while discharging changes results.
Manufacturer Testing
Official runtime tests remain valuable.
Frequently Asked Questions
Why does the chart use 85%?
It represents a practical AC conversion assumption.
Will DC loads run longer?
Often, because they avoid AC inverter losses.
Can a 1000Wh station run a 1000W load for one hour?
Usually less than one hour after losses.
What about refrigerators?
Use average cycling wattage.
Does capacity equal usable energy?
Not always.
Why do official runtimes differ?
Test loads and conditions vary.