Size a portable power station from your loads. Add the watt-hours each device needs, allow margin for conversion losses, and make sure the station's AC output can handle the highest simultaneous load and startup surge.
Basic runtime estimate
Device watts × hours used = watt-hours required. If a 50-watt device runs for 5 hours, the idealized energy requirement is 250Wh. Real systems lose energy in conversion and standby operation, so do not size to the exact theoretical number.
Do not ignore surge loads
Refrigerators, pumps and other motor-driven equipment may draw more power when starting. Check the device documentation and the power station's continuous and surge output specifications.
Current Prepared Bee range
Prepared Bee currently lists EcoFlow models spanning compact RIVER units through larger DELTA systems, plus solar panels. Product specifications and inventory change, so confirm the current merchant/manufacturer specs before purchase.
Return to the emergency backup power guide for charging and planning considerations.