Aluminum Macbook (Spring 2009) Battery Question

Discussion in 'MacBook' started by cjm3113, Aug 10, 2010.

  1. cjm3113 macrumors 6502

    Nov 30, 2008
    I purchased a 13'' Unibody Aluminum Macbook in April of 2009. I have had the computer for a little over a year now and absolutely love it. For a while, the battery lasted 3:30-4 hours on a full charge on average (mostly web browing, not heavy usage). Recently it is only lasting for 1:50-2 hours when asked to perform the same workload. It never predicts more than 2, maybe 2:30 hours of life even after a full charge.

    Is there something wrong with my battery, or is this just the result of an aging battery showing some use?
  2. GGJstudios macrumors Westmere


    May 16, 2008
  3. celticpride678

    Feb 15, 2009
    Boston, MA
  4. unixperience macrumors regular

    Jul 21, 2010
    My first suggestion would be calibrating your battery.
    You can also go to your system profiler and then look at hardware > power, if it says your charge capacity is around 2000 mAH or less which should come to about 2 hours ( I think its 4500 when they are new) it might be time to just get a new battery.
    you can also check your charge cycle, apple claims around 1000 charges before it reaches half capacity so if your number is up there, that means you still again may need a new battery
    below cycle count there is a condition section, it should say normal, if it says service, or poor, or anything besides normal, once again get a new battery
  5. cjm3113 thread starter macrumors 6502

    Nov 30, 2008
    Charge Information:
    Charge remaining (mAh): 4055
    Fully charged: Yes
    Charging: No
    Full charge capacity (mAh): 4085
    Health Information:
    Cycle count: 440
    Condition: Good

    Judging by this information, it would appear that the calibration may very well do quite some good for me.
  6. unixperience macrumors regular

    Jul 21, 2010
    Sounds about right. Hopefully that works. let us know the results

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