What Size Power Station Do I Need?
Tick the appliances you would keep running, adjust the watts and hours, and set how many days the outage lasts. The results include about 15% inverter loss.
Your outage load
Example values below. Change watts and hours to match your own appliances.
ApplianceWattsHrs/day
What you need
Includes about 15% inverter loss.
2,243Wh
Battery capacity
555W
Peak output
- EcoFlow Delta 21,024 Wh, 1,800 WRuns about 11 hours
- Jackery Explorer 1000 V21,070 Wh, 1,500 WRuns about 11 hours
- Anker SOLIX F38003,840 Wh, 6,000 WCovers 1 day
Fridge startup adds a surge, so 300 W is added to peak output when it is selected. Real fridge use varies with age and room heat.
How the numbers work
Each appliance uses its watts for the hours you enter each day. We add these up, multiply by the outage length and add 15% for inverter loss. A refrigerator also needs a short surge when its compressor starts, so we add 300 W to the peak output when it is selected.
When you are ready to compare models, read the best portable power stations guide.