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  • Is OS X Mountain Lion Crippling Laptop Battery Life?


    Shortly after OS X Mountain Lion was released, a number of users began posting on Apple Support Communities that their laptops had started experiencing inexplicable battery life issues. Specifically, battery life is being drained exponentially faster with Mountain Lion.

    Given the millions of new Lion tamers out there (my pet name for the bazillion people that nabbed Mountain Lion immediately upon its release), the criticisms are loud and growing louder with each passing day.

    Most of those reporting the issue say that battery life has dropped by one or two hours. Other cases are more severe, with claims of laptops dying after just two hours of operation with OS X Mountain Lion installed. Making matters worse, hotter machines have even been reported.

    Apple is now aware of the issue and is believed to be investigating the matter in hopes of quickly locating and resolving the offending culprit.

    Source: Apple Support Communities
    This article was originally published in forum thread: Is OS X Mountain Lion Crippling Laptop Battery Life? started by Michael Essany View original post
    Comments 32 Comments
    1. Oscalifornia87's Avatar
      Oscalifornia87 -
      Had the beta installed and never had a problem with it either. Now I have the public release and still working like a champ on a 2011 13" MBP.
    1. islandremix's Avatar
      islandremix -
      2010 13" MBP 2.4ghz C2D 8GB RAM 500GB HDD 120GB SSD and no SLOTDVD

      Went from OSX Lion to Mountain Lion and saw a big battery drain difference. I will be trying a fresh install of just OSX Mountain Lion this weekend but I lost about 2 hours on battery life. I am usually just browsing the web some short video clips, catching up on MMI, and working on Microsoft Excel.
    1. yungbluhd's Avatar
      yungbluhd -
      way hotter. i installed. restarted, and then you hear the fans pickup big time within 2 min of being on. I instantly thought, if this thing doesn't fry my battery is definitely gonna be f---ed
    1. hitman10's Avatar
      hitman10 -
      Quote Originally Posted by islandremix View Post
      2010 13" MBP 2.4ghz C2D 8GB RAM 500GB HDD 120GB SSD and no SLOTDVD

      Went from OSX Lion to Mountain Lion and saw a big battery drain difference. I will be trying a fresh install of just OSX Mountain Lion this weekend but I lost about 2 hours on battery life. I am usually just browsing the web some short video clips, catching up on MMI, and working on Microsoft Excel.
      I'm having the same issue and thought i was crazy.. I was running itunes or something small and the thing is going crazy. Legit i was like.. its the weather cuz its soo hot. Apparently its not..?

      I was on skype and my battery lasted maybe 2hrs.. if that. MBP 15" mid-2011 8gb 500gb SSD.
    1. Malus's Avatar
      Malus -
      I'm experiencing some issues with battery life on my mid 2011 15'' MBP as well. Seems like I'm only getting about and hour and a half or so of battery life. Hope they find a fix soon it's definitely made my MBP a desk machine for the time being.

      Quote Originally Posted by feidhlim1986 View Post
      I can't tell, cos Apple stupidly removed the "Time Remaining" Battery view in the Menu Bar.
      Wtf are you talking about dude? It's still there! Click on the drop down and click on "show percentage".
    1. moomiaowoof's Avatar
      moomiaowoof -
      Not going to even bother upgrading lol
    1. i.Annie's Avatar
      i.Annie -
      I have a 2010 MBP and 2012 MBA on ML, neither are having excessive battery drain or heat issues.

      Both were upgraded without a fresh install. Not sure why some people are experiencing this.
    1. feidhlim1986's Avatar
      feidhlim1986 -
      Wtf are you talking about dude? It's still there! Click on the drop down and click on "show percentage".
      WFT are you talking about? Show Percentage does not equal Show Time. Lion had both, Mountain Lion only has Show Percentage.
      You cannot display time remaining in the menu bar in mountain lion.
      Ok dude?
    1. madrich's Avatar
      madrich -
      Quote Originally Posted by moomiaowoof View Post
      Not going to even bother upgrading lol

      ME TOO! I staying with Snow Leopard.
    1. pakitos's Avatar
      pakitos -
      Are you guys sure that the Spotlight indexing is over? Most of the complains on Apple forums are cause they didnt let Spotlight end before arguing about the low battery life, also let it be for a couple of days.
    1. Goof's Avatar
      Goof -
      Quote Originally Posted by iYeow View Post
      I have no issue , LOVING IT on my Dual Boot Machine.

      Interested in what you're torrenting there...
    1. Nikhil_99's Avatar
      Nikhil_99 -
      Quote Originally Posted by WaLLy3K View Post
      I've been using 10.8 since the GM release on my Mid 2010 MBP (Upgraded with a Samsung 830 SSD) and haven't had any issues. In fact, I believe the estimated time remaining has become more accurate as it'll say I'm going to have 5 hours of life with Safari/Mail/Messages/Adium/Steam/iTunes and a few other apps open… and Steam isn't particularly friendly on the battery life, I've found.

      Closing Steam, it estimates about 6 hours battery life on 97%. Lion wasn't that good, in comparison.

      Thanks for sharing your view, even I want to install ML on my Mid 2010 13" model, so you said you use 2010 Mid MBP but which one 13" or 15".