Shortening of battery life after an upgrade from Surface RT to Windows 8.1



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RT Surface users had trouble upgrading to Windows 8.1. The last item on the complaint list is that some users experience a reduction in battery life when upgrading their RT Surface to Windows 8.1.

Users who have updated from Windows RT Preview now have a number of problems with their device batteries. Users who upgraded Surface RT from Windows RT 8.1 Preview to Windows RT 8.1 have noticed a decrease in battery life.

During the update, the wireless adapter power policy is not migrated. Instead, the power policy is set to a default value that consumes more power during operation and in connected sleep mode, Microsoft explains.

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To reset the wireless adapter power policy to the correct settings, open an administrator prompt, type the following command and press Enter:

Enter the following, then press Enter:

This migrates the wireless adapter power policy and should solve the problem.



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