Concerned about my macbook pro's battery

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

  1. Definition macrumors newbie

    Jun 22, 2009
    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

    Mar 4, 2008

    Did you calibrate your battery?
  3. SnowLeopard2008 macrumors 604


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


    Sep 28, 2008
    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


    Jan 8, 2009
    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

    Jun 23, 2009
    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

    Jun 22, 2009
    May I have instructions on how to calibrate it?

    Thanks again
  8. kai920 macrumors member

    Jul 21, 2009
  9. madmaxmedia macrumors 68030

    Dec 17, 2003
    Los Angeles, CA
    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

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

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