Ormaven · Power and backup
How long can your power station run?
Add up to three groups of devices running at once. Account for conversion losses and a battery reserve, and check against the station's continuous output rating. Results assume constant power draw.
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Estimated result
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Estimated usable Wh = rated Wh × efficiency fraction × (1 − reserve fraction). Runtime hours = usable Wh / combined constant wattage.
What to know
Limits of the estimate
- Actual losses vary by AC/DC connection, inverter efficiency, temperature, battery age and idle consumption. Efficiency and reserve are your assumptions.
- Check both continuous and surge output ratings: motors and compressors may draw more at startup. This tool checks continuous watts only.
- Not a guarantee or a basis for life-critical backup. Actual device load may vary over time.
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