2012 MBA - only holding 2 hour charge

Discussion in 'MacBook Air' started by nsbane, Dec 29, 2012.

  1. macrumors newbie

    Jul 22, 2012
    Hey, for some reason my MBA is only lasting for 2-3 hours before it dies. Also, the fan seems to be running more often.

    It's my first Mac, bought it in July 2012. I used Windows for years, even built my own tower once. But I'm still a Mac novice. So I don't know about any basic diagnostic tools or steps, even system restores, that I would normally do with a windows machine.

    Any advice?
  2. macrumors regular

    Nov 5, 2011
    I would call Apple I think it is 1 800 my apple, doesn't sound right, I have a 2011 11" air...no issues, battery lasts in the 4-5hr range.

    I also have a 2011 mac mini and a 2006 15" MB Pro also no issues.

    It is under warranty plus you can still by applecare for an additional 2yrs warranty.
  3. Mrbobb, Dec 29, 2012
    Last edited: Dec 29, 2012

    macrumors 601

    Aug 27, 2012
    That's a sign that *something* is running in the background perhaps and eating up batt.

    Computers are computers no matter whether PC or Mac, basic troubleshooting technique u learned from Windows still apply.

    Download a app, like istat (free) that will tell you what your machine is doing at a given time, then u will find out what's eating up your cpu cycles + batt.

    Conversely if you don't want to bother, can always reload OSX from scratch. I hope u saved the clean install executable.

    ps.: I myself have a current similar issue, and I can actually feel the palmrests getting warm when normally it's room-cold, look at my iStat and sure enough the cpu has shot up to 70+ degree when normally it stays on the 40s. So that's a troubleshooting technique for ya.
  4. thread starter macrumors newbie

    Jul 22, 2012
    Took your advice - Dropbox was eating up 95% of my cpu. Closed it, and everything is fine. My CPU temp was over 200 deg f. Now it's 114 deg.

    Anyone else having similar problems w/Dropbox? This only started happening in the last week I think. I even updated to the latest release, and it was still using up all my CPU.
  5. macrumors Westmere


    May 16, 2008
    That's certainly not normal, but several have reported similar issues. I'd try uninstalling and reinstalling again. The most effective method for complete app removal is manual deletion:
  6. macrumors 601

    Aug 27, 2012
    Certain any app that does things on his own (background) tasks, should have a setting that says "Only do this task on AC power." It it doesn't have such feature, then I would be wary of running it on a laptop.

    Or if they let you manually schedule the tasks, say evening time, when u know you are always home on AC would work too, not as nice as paragraph#1 but OK.
  7. macrumors 6502

    Apr 19, 2012
    Probably just something wrong with your dropbox installation. It works fine on mine and doesn't cause any drainage issues.
  8. macrumors 6502a

    Oct 21, 2011
    Apple reports a minimum of 5 hours on the 11-inch and 7 hours on the 13-inch so anything less than that is faulty.
  9. macrumors Westmere


    May 16, 2008
    I hope you're being sarcastic, because that is completely false. Read the actual claim on Apple's site:
    How much time you get on a charge is dependent on your settings and workload. If you get less than 5 or 7 hours, your battery is NOT faulty.

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