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What size generator or power station for a laptop? (100+ W)
To run a laptop, choose at least
100 W running.
100 W running.
A laptop draws about 50 W while running. Pick a generator, inverter or power station rated comfortably above these numbers.
Battery runtime calculator
Estimated runtime—
Assumes about 85% usable capacity. Motors need extra headroom for startup surge.
How long a power station lasts
| Power station | Estimated runtime |
|---|---|
| 300 Wh | 5 h 6 min |
| 500 Wh | 8 h 30 min |
| 1,000 Wh | 17 h 0 min |
| 2,000 Wh | 34 h 0 min |
| 3,000 Wh | 51 h 0 min |
Sizing guide
| Minimum running watts | 100 W |
| Minimum starting watts | 100 W |
| Suggested inverter | 100 W or higher |
See also laptop wattage and running cost.
FAQ
How many watts does a laptop use?
About 20-100 watts while charging and in use; less once the battery is full.
Is a laptop cheaper to run than a desktop?
Much cheaper - laptops are built around battery efficiency.
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