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Battery Life - Mountain Lion may be a power hog

1098 Views 3 Replies Latest reply: Jul 30, 2012 10:20 AM by JavaLink RSS
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Jul 29, 2012 4:38 PM

Installed Mountain Line on my MacBook Air (mid-2012) two days ago.  The machine never got hot, nor used the fan on with the prior OS.  Mountain Lion has the fans screaming for mercy.  Just this evening, I left the machine idle with no tasks unplugged.  The OS managed to deplete a new battery to 1% in less than two hours.


Any solutions to this?  I was happy without the "mountain" in my lion.

MacBook Air, OS X Mountain Lion, Battery Hog
  • Griswaldo4g Level 1 Level 1 (10 points)
    Currently Being Moderated
    Jul 29, 2012 7:02 PM (in response to JavaLink)

    I would check for a Software update in the upper left under the Apple menu.  If there is nothing or it does not fix your problem, then I would try installing Mountain Lion fresh.


    You could backup your Air with Time Capsule or Carbon Copy Cloner (just a couple of ways to do it).  To reinstall you would hold option as you power your Mac up.  From here you would want to select a fresh install (I can't remember the exact wording).


    I have a 2011 MacBook Air and, even with several fresh installs of Lion, Mountain Lion blows Lion away with battery life.  Theoretically, with a newer Air and Intel's advancements in battery, you should get very good battery life on your new Air.  I have noticed that Mountain Lion has substantially better battery life while sleeping in particular.

  • ezollars Level 2 Level 2 (255 points)
    Currently Being Moderated
    Jul 29, 2012 7:32 PM (in response to JavaLink)

    It sounds like a runaway process of some sort. 


    If you run Activity Monitor, does it show anything chewing up CPU cycles?  That can give a clue as to what the issue is and, perhaps, how to solve it.


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