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How many watts does a phone charger use? (5 W)
A phone charger uses about 5 W
Typical range 2–20 watts.
Typical range 2–20 watts.
Running cost calculator
Per hour—
Per day—
Per month—
Per year—
Energy/mo—
A phone charger draws power only while topping up the battery, then trickles to almost nothing once full.
Phone charger power specs
| Typical running power | 5 W |
| Typical range | 2–20 W |
| Energy use | 0.01 kWh/day · 0.4 kWh/mo |
What affects the wattage
- Model size, age and energy rating.
- Settings and how hard it works (heat, speed, load).
- How many hours a day you run it.
Running cost at $0.17/kWh
| Electricity rate | Per day | Per month | Per year |
|---|---|---|---|
| $0.10/kWh | $0.00 | $0.05 | $0.55 |
| $0.15/kWh | $0.00 | $0.07 | $0.82 |
| $0.20/kWh | $0.00 | $0.09 | $1.10 |
| $0.25/kWh | $0.00 | $0.11 | $1.37 |
| $0.30/kWh | $0.00 | $0.13 | $1.64 |
| $0.40/kWh | $0.01 | $0.18 | $2.19 |
See the full breakdown of what it costs to run a phone charger, or what size power station runs a phone charger.
FAQ
How many watts does a phone charger use?
About 2-20 watts while charging, depending on fast-charge support.
Does leaving a charger plugged in waste power?
Modern chargers draw almost nothing with no phone attached.
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