Runtime Calculator
How long will a portable power station run your devices? Enter your total wattage and battery capacity for an instant estimate that accounts for inverter losses and a safety reserve.
Total load60W
Select devices above or enter custom wattage. Showing 60W default.
Estimated Runtime
Select devices above
Tap the device buttons on the left to build your load, or enter a custom wattage.
How much battery for a target runtime?
hours at 60W
628 Wh minimum
Inverter: 72W+ recommended
Assumptions
- Efficiency: 85% (AC inverter loss)
- Reserve: 10% kept in battery
- Usable energy: 870 Wh of 1024 Wh rated
- After reserve: 783 Wh available
These are estimates. Real runtime varies with temperature, battery age, load fluctuations, and manufacturer-specific efficiency.
Stations that can handle 60W for 8+ hours
These stations meet or exceed 628Wh. Prices link to Amazon.
Estimated Runtime
13 hrs
60W on 1024Wh
628Wh needed for 8h