New 13" MBP Battery already 99%?

Discussion in 'MacBook Pro' started by phas3, Jun 20, 2012.

  1. phas3 macrumors 65816

    Joined:
    Oct 5, 2008
    #1
    My two day old 13" MBP 2012 is already at 99% according to istat pro:

    Battery Health: 99%
    Cycles: 2

    shouldn't it be 100%? When I first got it I let it fully charge and then started using it, I haven't let it go to 0% yet.
     
  2. avalys macrumors 6502

    Joined:
    Jun 4, 2004
    #2
    The "battery health" measurement is not very precise. Don't worry about it.
     
  3. Erasmus macrumors 68030

    Erasmus

    Joined:
    Jun 22, 2006
    Location:
    Hiding from Omnius in Australia
    #3
    Don't worry about it. It will likely fluctuate between 100% and ~98%. Doesn't mean anything. If it drops below 95% health, then you might start considering possibly maybe beginning to worry a little bit, but not too much.

    My over one year old MBP is sitting at ~98% health, and I don't look after the battery at all.
     
  4. jeutie macrumors member

    jeutie

    Joined:
    Jul 9, 2011
    Location:
    Belgium
    #4
    My Retina Macbook Pro dropped to 99% after only 6 cycles. I don't think it is very precise. :)
     
  5. Ozy macrumors regular

    Ozy

    Joined:
    Aug 8, 2006
    Location:
    Goodyear, AZ
    #5
    My new rMBP actually has a higher than rated capacity out of the box. It was about 89% when I got it today, and it charged above 100%.
     

    Attached Files:

  6. Cubeeless macrumors regular

    Cubeeless

    Joined:
    Apr 6, 2012
    #6
    Thats normal!
     
  7. TheMacBookPro macrumors 68020

    TheMacBookPro

    Joined:
    May 9, 2008
    #7
    Don't sweat it, my rMBP only has 97% with 1 cycle on it :p

    [​IMG]
     
  8. MH01 macrumors G4

    MH01

    Joined:
    Feb 11, 2008
    #8
    Completely normal, that readout is as about as accurate as the fuel Gauge in your car.
     
  9. cookiesnfooty macrumors 6502

    cookiesnfooty

    Joined:
    Jul 1, 2009
    Location:
    Harrogate
    #9
    Mine is at 100% after 82 cycles.
     

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  10. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #10
    It is perfectly normal if your battery health (maximum capacity) is more or less than 100%, even when brand new, or if it fluctuates up or down over time. For further details, read the CHECKING STATUS AND HEALTH section of the following link.

    This should answer most, if not all, of your battery questions:
     
  11. windowstomac macrumors regular

    Joined:
    Jun 23, 2011
    #11
    I don't think my MBP has ever showed 100%, always 99!
     

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