how to set the following energy pref.?

Discussion in 'OS X Mountain Lion (10.8)' started by Rossatron, May 21, 2013.

  1. macrumors 6502a

    Apr 4, 2013
    in a ziplock bag inside a car's trunk

    how can i set the energy preferences on a macbook so that when im running on battery power alone, display brightness are around 50%, and when i plug in, brightness is 90%+?

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