Battery performance usually 3hours

Discussion in 'MacBook Air' started by hyungsup, Aug 20, 2011.

  1. hyungsup macrumors member

    Jul 11, 2009
    I've got the new macbook air 11" i5 version.
    I'm getting under 3 hours with the full charge.
    3.5hrs if I lower the brightness.
    I had the backlit keyboard turned off.
    Apple advertised 5 hours battery life.
    Didn't really care.
    My brother's gf got a macbook air.
    She's getting 5 hours....

    The first photo is with medium brightness.
    The 2nd photo is with max brightness.
    Is this normal for you guys?


    Attached Files:

  2. applewins macrumors member

    Jun 12, 2011
    In addition it depends on what you're doing. Try to not have open any task-intensive programs like iMovie or even worse, multiple programs open at one time.

    If you set the brightness on like 40-50%, turn the backlit keyboard off and do light web browsing or note taking you should get like 4-5 hours.

    When I'm in my bed with the MBA on my legs, turned off the light in my room I can set the brightness to like 30%. In this case I get +- 5-6 hours.

    Keep in mind that the time on your MBA is just a suggestion based on your tasks and settings your working with, the only thing which is reliable is the time you really get. In this case you have no other option than using a clock to see how much time you get.

    But indeed, if you put the brightness on like 70%, turn the backlit keyboard on and do task intensive work, the battery life will drop on like 3 hours.
  3. hyungsup thread starter macrumors member

    Jul 11, 2009
    So if you've got no cpu intensive work done, iMovie; garageband; iPhoto deleted, backlit keyboard turned off and brightness is on about 50% and still getting around 3 hours battery is abnormal?

  4. applewins macrumors member

    Jun 12, 2011
    in this case, yes I think so. Maybe the battery life will improve after some cycles ? Try to calibrate your battery once again.

    If the battery life doesn't improve at all, you'd better go to a store or call a Service Hotline from Apple to ask/check if your battery doesn't have any production mistakes.

    3 hours with your settings sounds very strange to me.
  5. jsolares macrumors 6502a

    Aug 8, 2011
    Land of eternal Spring
    But are you actually just getting 3hrs or are you relying on what the battery indicator in OSX tells you?
  6. DieterRams, Aug 21, 2011
    Last edited: Aug 21, 2011

    DieterRams macrumors regular

    Aug 3, 2010
    Yea I would do a test using a timer/clock while using it in different scenarios of intensive tasks and light tasks from full charge rather than rely solely on the OS X battery meter to know for sure. Would that be possible? In other words, at a minimum, two tests: one run-down from 100% to 0% while running/working on intensive tasks (maybe Photoshop, compiling code, flash videos, etc) and another run-down from 100% to 0% while doing light tasks (maybe a few web pages, some music, word processing)
  7. bbhegedus macrumors regular


    Aug 22, 2010
    I seem to be getting similar battery life as you, same machine it sounds like. I don't really do intensive tasks though! Just some web browsing with some music turned on in the background. Most people have said that barely affects battery life and my battery indicator in OS X Lion is proof of the music barely affecting the battery life.

    My battery isn't what I want it to be at all, but I'm happy if I get at least 4 hours. Maybe it's just the type of user I am, but I even have certain plugins that block flash ads and block plugins from automatically playing.
  8. Abstract macrumors Penryn


    Dec 27, 2002
    Location Location Location
    Get a watch, and run your battery from 100% --> 0%.

    Then tell us how long it lasted.

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