Concerned about my macbook pro's battery

Discussion in 'MacBook Pro' started by Definition, Aug 12, 2009.

  1. Definition macrumors newbie

    Joined:
    Jun 22, 2009
    #1
    I bought a MBP 13" (Mid 2009) and I'm a little concerned about its battery life.

    It has been two weeks, 17 cycles and 98% health.

    Additionally, I can never seem to get more than 3 hours of battery life while watching megavideo/youtube, IRC and firefox w/ wifi.

    Is there something wrong with my battery or is this normal?

    5361/5450 mAh

    Thanks in advance for the help
     
  2. Andrew Henry macrumors 6502a

    Joined:
    Mar 4, 2008
    #2

    Did you calibrate your battery?
     
  3. SnowLeopard2008 macrumors 604

    SnowLeopard2008

    Joined:
    Jul 4, 2008
    Location:
    Silicon Valley
    #3
    Advertised 7 hours battery life is for light web surfing, not watching videos. Forget calibration, it's useless.
     
  4. NewMacbookPlz macrumors 68040

    NewMacbookPlz

    Joined:
    Sep 28, 2008
    #4
    SnowLeopard, calibrating the battery is not useless.

    I definitely saw an increase in battery life after calibrating as opposed to prior with my Unibody.
     
  5. RandomKamikaze macrumors 6502a

    RandomKamikaze

    Joined:
    Jan 8, 2009
    Location:
    UK
    #5
    Agree with NewMacbookPlz, calibrating definately helps. It also helps the readings of the battery such as its state and provides a more accurate reading on time/percentage left
     
  6. emilyland1326 macrumors newbie

    Joined:
    Jun 23, 2009
    #6
    Your battery health should increase after calibration (mine did) and watching videos, like others have said, decreases battery time, so its normal.
     
  7. Definition thread starter macrumors newbie

    Joined:
    Jun 22, 2009
    #7
    May I have instructions on how to calibrate it?

    Thanks again
     
  8. kai920 macrumors member

    Joined:
    Jul 21, 2009
    #8
  9. madmaxmedia macrumors 68030

    Joined:
    Dec 17, 2003
    Location:
    Los Angeles, CA
    #9
    You might try disabling flash ads in Firefox, there are plug-ins to do that. That should also help maximize your battery life.

    I am finding that so far, my 13" MBP has great battery life. But even so, the 'time remaining' will swing wildy depending on what I'm doing. A web page with a lot of flash crap will send the number way down.

    Right now I only have this page open, and time remaining says 5:39. That is at 71%, and I have been using the computer for awhile. So that's pretty great.
     
  10. kai920 macrumors member

    Joined:
    Jul 21, 2009
    #10
    When I connect the power adapter at the last step, can I use it while it's charging?
     

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