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How Long Will a Power Station Run a Desktop Computer?

Desktop computers draw about 250 W on average (300 W running). A 1,000 Wh power station runs one for about 3.4 h. See every popular model below, or calculate with your exact device.

Runtime by power station

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Power stationCapacity (Wh)Runtime (h)Can start it?
EcoFlow RIVER 3 Plus28658 min✓Price
Jackery Explorer 300 v228859 min✓Price
EcoFlow RIVER 2 Pro7682.6 h✓Price
EcoFlow DELTA 31,0243.5 h✓Price
Anker SOLIX C1000X1,0563.6 h✓Price
Jackery Explorer 1000 v21,0703.6 h✓Price
BLUETTI AC1801,1523.9 h✓Price
EcoFlow DELTA 2 Max2,0487 h✓Price
Jackery HomePower 2000 Plus v22,0487 h✓Price
EcoFlow DELTA Pro3,60012.2 h✓Price
Anker SOLIX F3800 Plus3,84013.1 h✓Price

Best picks for a full workday

Best match

EcoFlow DELTA Pro

  • 3,600 Wh · 3,600 W output
  • Solar input up to 1,600 W
  • 99 lb · expandable

Runs a desktop computer ≈ 12.2 h

Check price on Amazon
Budget + add solar

Jackery HomePower 2000 Plus v2

  • 2,048 Wh · 2,400 W output
  • Solar input up to 800 W
  • 41.45 lb · expandable

Runs a desktop computer ≈ 7 h

Check price on Amazon
Expandable later

Anker SOLIX F3800 Plus

  • 3,840 Wh · 6,000 W output
  • Solar input up to 3,200 W
  • 136.7 lb · expandable

Runs a desktop computer ≈ 13.1 h

Check price on Amazon

How we calculate it

Runtime = capacity (Wh) × 0.85 ÷ 250 W

For a full workday you need about 2,360 Wh (2,000 Wh of energy plus inverter losses). Running other devices at the same time? Add them in the runtime calculator.

Tips to run your desktop computer longer

  • An office PC plus monitor typically draws 150–300 W. Check your power supply rating and real usage with a plug-in meter.
  • Laptops use a fraction of the energy. For outages, working on a laptop extends runtime several times.
  • A power station with UPS function (fast switchover) protects against data loss when the grid fails.

Frequently asked questions

How long will a 1000Wh power station run a desktop computer?

About 3.4 h, based on an average draw of 250 W and 85% inverter efficiency.

How many watts does a desktop computer use?

Typically about 300 W while running. Averaged over time it draws about 250 W because it cycles on and off.

What size power station do I need for a full workday?

At least 2,360 Wh. The smallest model in our comparison that covers it is the EcoFlow DELTA Pro (3,600 Wh, about 12.2 h).

More runtime guides

By The PlanMyWatts team · Last updated 2026-11-02 · How we calculate · Product specs from manufacturers; verify before buying.