13" MBP 2009 Battery is getting crappy!

Discussion in 'MacBook Pro' started by petrucci666, Apr 21, 2010.

  1. petrucci666 macrumors 6502a

    Joined:
    Apr 30, 2009
    Location:
    San Francisco, CA
    #1
    So I calibrated my battery last night in hopes of bumping up it's longevity, but with no success. Right now I'm at 100% charged, at exactly 50% brightness, Word and Powerpoint open, with the usual browsing. No music or video playing etc. The time remaining is approximately 4 hours.

    I checked coconutbattery and it says that the capacity is 100% with 201 cycles and 7 month age.

    Why is it not showing 5:30 to 6 hours (sometimes even 6:30) like it did only 2-3 weeks ago. Shouldn't the calibration help the longevity of the battery?

    Thanks!
     
  2. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #2
    Calibrating the battery only provides the software with a more accurate reading of the remaining capacity.
     
  3. Pax macrumors 6502a

    Joined:
    Dec 12, 2003
    #3
    More likely something is using your CPU.

    Word and Powerpoint can be CPU hogs. It depends on the version. What is your CPU load when it says 4 hours? How many hours if you reboot and do not open any programs at all?
     

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