Windows 7 has a hidden tool that examines your laptop’s power usage and gives you a report and suggestions on how you can improve the battery efficiency.

To run the tool, Run cmd as an Administrator.

At the command line, type in the following:

powercfg -energy -output FoldernameFilename.html

For instance I saved mine on the Desktop as Power_Report.html.

powercfg -energy -output c:UsersACKDesktopPower_Report.html

For around 60 seconds, Windows 7 will trace, observe & analyze your laptop and generate a report in html format, in the location specefied by you.

The Power Efficiency Diagnostic Report could be quite detailed an may overwhelm a normal user.

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