94% battery health in 2 month old 2011 13" MBP...?

Discussion in 'MacBook Pro' started by snakemajestic, Apr 17, 2011.

  1. snakemajestic macrumors member

    Joined:
    Feb 25, 2011
    #1
    I started using istat a few days ago and now I'm goin crazy over monitoring the battery...

    A few days ago, I was at 96% battery health which seemed goofy for a brand new computer. And now I'm at 94% health. Should I be concerned about this?

    I calibrated the battery following the steps on apple's support page but it obviously didn't help.

    Anyone have any insights....?

    Please and thank you
     
  2. miles01110 macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #2
    Completely normal. There are multiple threads about this exact same behavior.
     
  3. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #3
    It's quite normal for your battery health to fluctuate up and down over time. Calibration doesn't affect your battery's health; it only makes the readings more accurate. This should answer most, if not all, of your battery questions:
     
  4. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #4
    this is nothing to worry about, you should expect this. perfectly normal.
     
  5. snakemajestic thread starter macrumors member

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    Feb 25, 2011
  6. Srirama macrumors member

    Joined:
    Dec 4, 2010
    Location:
    Chennai
    #6
    Did you experience a significant drop in battery life?
    If not,then you have nothing to worry about.
    You could try calibrating. :)
     
  7. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #7
    You could try reading: :D
     
  8. DoFoT9 macrumors P6

    DoFoT9

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    Jun 11, 2007
    Location:
    Singapore
    #8
    HAHA! how rude :rolleyes: :p
     
  9. Srirama macrumors member

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    Dec 4, 2010
    Location:
    Chennai
    #9
    My bad,did not see the last part. :cool:
     
  10. ranviper macrumors 6502a

    ranviper

    Joined:
    Oct 10, 2010
    Location:
    Adirondacks, NY
    #10
    Well, considering my mbp 2010 is11 months old and at 92% health...not really sure. Hopefully it won't continue to die at that rate...
     
  11. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #11
    Read the comments in the thread and the link I posted.
     
  12. Macsavvytech macrumors 6502a

    Macsavvytech

    Joined:
    May 25, 2010
    #12
    This ^
    Love how people including myself sometimes comment on peoples comments and then get commented on because of how they commented because they didn't read the comment. :D
     
  13. Fubar1977 macrumors 6502a

    Fubar1977

    Joined:
    Jul 30, 2010
    Location:
    North Yorkshire, UK
    #13
    I`ve read all the comments and chosen not to comment on the comments as as it will cause people to comment on my comments thus generating more needless comments.

    Comment away...


    OP: don`t worry, it`s fine. ;)
     
  14. dusk007 macrumors 68040

    dusk007

    Joined:
    Dec 5, 2009
    #14
    Mine too 10 months and 91%. Calibrating has never changed anything at all. It didn't "fluctuate" to higher capacity for months. It only knows the way down.
     
  15. Macsavvytech macrumors 6502a

    Macsavvytech

    Joined:
    May 25, 2010
    #15
    Bear in mind your battery often doesn't come at "100%". often it already has load cycles / not 100% health. If you calibrate it correctly then you will always have optimal performance. Also 91% at 10 months! WOW that is excellent, after 10 months most computer batteries apart from MBP i have come across would be reading ~50%.
     
  16. Fubar1977 macrumors 6502a

    Fubar1977

    Joined:
    Jul 30, 2010
    Location:
    North Yorkshire, UK
    #16
    Simply untrue in so many ways.
    Calibration has NO effect on battery performance whatsoever it simply improves the accuracy of the battery indicator.
    A brand new MBP may show 1-2 loadcycles but even that would be fairly unusual.
    (91% in 10 months does not surprise me at all, mines at 94% @ 176 cycles and approx 8 months old.

    The ONLY thing I actually agree with is your opinion of PC batteries generally.
    Having said that, plenty of Vaio`s I`ve seen could give the MBP a run for it`s money battery wise.
     
  17. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #17
    me thinks you two need a life ;) ;)


    i honestly dont see the commotion over the batteries but.
     
  18. wonder-boy macrumors newbie

    wonder-boy

    Joined:
    Mar 15, 2011
    #18
    22 cycles and 99% health.... about a month old is my mac :)
     
  19. adztaylor macrumors 68000

    Joined:
    Aug 20, 2009
    Location:
    Preston, UK
    #19
    Yeah when I calibrated my MacBook as soon as I got it last month, the health went down to 98%. Calibrated it again this month and its gone down to 96%. Not really worrying about it battery life seems about the same.
     
  20. HBOC macrumors 68020

    Joined:
    Oct 14, 2008
    Location:
    SLC
    #20
    I don't know if I have calibrated the battery yet, but here is mine. It stays plugged in quite a bit (80-85% of the time)
     

    Attached Files:

  21. Rickai's Tech macrumors newbie

    Joined:
    Apr 18, 2011
  22. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #22
    It's normal. Read the link in post #3.
     
  23. Srirama macrumors member

    Joined:
    Dec 4, 2010
    Location:
    Chennai
    #23
    I have stopped worrying about the battery health.
    To get best amount of battery life,use safari browser with max 3 tabs open(with no flash).
    Anymore,and you will now get your 10hr or 7hr battery life
     
  24. Delavau13 macrumors newbie

    Joined:
    Apr 5, 2011
    #24
    22 week old MBP, Battery at 93% health??

    I have owned my macbook for 22 weeks and the battery health is at 93% and only 38 cycles. Is that normal? I am fairly concerned :confused:


    help please
     
  25. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #25
    Did you read the thread?
     

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