How Many Watts of Electricity does a Lithium Ion Battery Charger use?

Real power-use measurements from a lithium ion battery charger.

By Rob Cockerham |

How Much Power does a Lithium Ion Battery Charger use

Lithium Ion Battery Charger: 5 Watts

Description

  • This is a recharger for my Ryobi Cordless Power Drill. It seems to last about 3 times longer than my old Ni-Cad batteries. The batteries this charges can also be used to power a bunch of other cordless tools in the Ryobi line.
  • varies from 0 to 5 watts

Power Use

  • Watts: 5
  • Kilowatts: 0.005 Kw.

Operation Cost

  • cost per minute: 0 hundredths of one cent (0 ¢)
  • cost per hour: 6 hundredths of one cent (0¢)
  • cost per day: 0¢
  • cost per month: 9¢

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