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Buy the right size power station, not the biggest one

A power station is a big battery with outlets. What matters most is how many watt-hours you need. Work that out first and the shopping gets easy.

Use the runtime calculator

Guides

• The 5 best portable power stations in 2026

  The best portable power stations for 2026 by job: short outages, UPS for a home office, camping, and CPAP.

• What size power station do you need?

  Free calculator: enter a power station size and a device to see how long it will run. Includes a table of common wattages.

• What size power station runs a CPAP?

  How many watt-hours you need to run a CPAP for one, two or three nights, and how to double your runtime for free.

• Can a power station run a refrigerator?

  Yes, if you size it right. See how long a 1 kWh power station runs a fridge, and how to keep food cold longer in an outage.