Battery Health dropped from 100% to 72% in one day?

Discussion in 'MacBook Pro' started by Advil, Jul 10, 2009.

  1. Advil macrumors 6502a

    Joined:
    Oct 4, 2008
    #1
    This is very odd... What could have happened?
    It's a fairly new uMBP 2.4
    [​IMG]
     
  2. Snowbound macrumors regular

    Joined:
    May 19, 2008
    #2
    Try calibrating it...directions are easy to find. Just search for battery calibration. If that doesn't work...the warranty will likely cover it.
     
  3. Chundles macrumors G4

    Chundles

    Joined:
    Jul 4, 2005
    #3
    Either it's a calibration issue or a dud battery. Either way, calibrate it and if that doesn't work then get it replaced.
     
  4. Gregintosh macrumors 68000

    Joined:
    Jan 29, 2008
    Location:
    Chicago
    #4
    Was it exposed to any extreme weather conditions? Physical damage? Power surges? Anything?

    If it just happened totally out of the blue while not doing anything out of the ordinary, then perhaps it is a freak thing and should be replaced.
     
  5. Advil thread starter macrumors 6502a

    Joined:
    Oct 4, 2008
    #5
    No extreme weather or power surges at all. I'm very careful with it.

    It's gone down almost another 10% now...

    [​IMG]

    how?!?!
     
  6. Chundles macrumors G4

    Chundles

    Joined:
    Jul 4, 2005
    #6
    Did you follow the advice given to you?

    Calibrate. If it doesn;t fix it then it's a dud.
     
  7. Advil thread starter macrumors 6502a

    Joined:
    Oct 4, 2008
    #7
    as you can see in the second screen shot i'm currently running the battery down to calibrate. i'm watching some videos and stuff to make it go faster, i'm at 35% (24 minutes) remaining.
     
  8. mickbab macrumors 65816

    mickbab

    Joined:
    Sep 13, 2008
    Location:
    Sydney, Australia
    #8
    My battery capacity is larger than original.....???
    Is this normal?

    In regards to your battery...seems odd to me but a calibrate might fix it.
     

    Attached Files:

  9. NovemberWhiskey macrumors 68030

    NovemberWhiskey

    Joined:
    May 18, 2009
    #9
    My battery health was 97% from the factory, and went up to 100% after 1 week of use.

    It appears that your health seems to depend on how quickly you drain the battery.

    If you put it at the dimmest brightness, and do nothing and just let the mbp drain for the entire day slowly, and then plug in and let it re-charge overnight, it should help your health.
     
  10. sal macrumors 6502

    Joined:
    Oct 13, 2007
  11. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #11
    Shrug. It's probably just the inherent error in reporting battery capacity that all such programs have to deal with.
     
  12. gothamm macrumors 6502a

    Joined:
    Nov 18, 2007
    #12
    wow....


    no one noticed that the OP does not even have his charger connected, and he wonders why his battery is depleting. Really makes me wonder who posts here


    incredible.
     
  13. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #13
    wow...

    someone didn't read the thread carefully enough to realize that the issue is battery capacity and not battery charge. Really makes me wonder who posts here

    incredible.
     

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