How Many Watts of Electricity does a HP Laptop running Vista use?

Real power-use measurements from a hp laptop running vista.

How Much Power does a HP Laptop running Vista use

HP Laptop running Vista: 47 Watts


  • A laptop is a small-sized computer that lets you look at this webpage. They are engineered to be lightweight and to run on battery power, so they don't typically use as much energy as a desktop computer. When they are unplugged, they use battery power. When they are plugged in, they charge the battery. When they are plugged in and the battery is completely charged, they only use as much electricity as is needed to run the computer. This was an HP Compaq 6910p
  • This laptop used 47 watts when its battery was fully charged. If the battery was low, and the laptop was plugged in, it would draw 99 watts, 52 watts of which was presumably for charging the battery. When the laptop was off, but charging, the laptop consumes 57 watts.

Power Use

  • Watts: 47
  • Kilowatts: 0.047 Kw.

Operation Cost

  • cost per minute: 1 hundredths of one cent (0.01 ¢)
  • cost per hour: 56 hundredths of one cent (1¢)
  • cost per day: 5¢
  • cost per month: 86¢

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Power use of these items was actually tested. Individual items will vary, but these are the actual measurements.