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
13
hours
60W load on 1024Wh battery
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.
Estimated Runtime
13 hrs
60W on 1024Wh
628Wh needed for 8h