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Extend battery life with Windows 7

by Steve Wiseman on May 21, 2009 · 0 comments

in Battery,Latptop,Microsoft,Windows,Windows 7


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I have been using the Release Candidate of Windows 7 since it came out. Every day I try to poke around and find out what is new.

I found an interesting tool for finding programs and settings that eat away at your laptop battery life.

It is available as a new command line option of the powercfg.exe program – Which has been part of windows since XP.

You call it from the command line like this:

powercfg -energy

(Make sure your command prompt is elevated as administrator)

When you run it, the program will do testing for 60 seconds:

Windows 7 Powercfg

Once it is finished, it will create a report in html format. It will show the programs and devices that are contributing to shorter battery life:

Windows 7 Power Configuration

Once you have the report, you can go through and try to correct the issues. Obviously there are going to be things that you can’t do anything about – Like a laptop motherboard that does not support the latest in power management.

Still, you will be able to fix some of them – and that will help you get just a little bit more out of your laptop battery in Windows 7.

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