A Little OCD, But... At What Cycle Did Your Battery Dip To 99% Health?

Discussion in 'MacBook Pro' started by Prof., Sep 16, 2012.

  1. Prof. macrumors 601

    Prof.

    Joined:
    Aug 17, 2007
    Location:
    Chicago
    #1
    I have a new 2012 15" MacBook Pro. When the battery hit its 12th full cycle, it officially went to 99% health which got me thinking: how does that compare to other MB's/MBP's?
     
  2. Freyqq macrumors 68040

    Joined:
    Dec 13, 2004
    #2
    I think mine started at 99%. To put you at ease, I have about 400 cycles and I'm still at 90%. These batteries are pretty impressive.
     
  3. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #3
    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.

    The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.
     
  4. Eithanius macrumors 65816

    Joined:
    Nov 19, 2005
    #4
    Mine's at 83% even though only 297 cycles, a far fetch from Apple's acclaimed 80% at 1000 cycles... I'm not impressed... :mad:
     
  5. ayeying macrumors 601

    ayeying

    Joined:
    Dec 5, 2007
    Location:
    Yay Area, CA
    #5
    I was at 80% @ 968 Cycles yesterday. I'm at 89% @ 969 Cycles right now.
     
  6. Jimf1234 macrumors newbie

    Joined:
    Jan 10, 2010
  7. BANANACANADA macrumors member

    Joined:
    Sep 2, 2012
    #7
    Screen Shot 2012-09-16 at 1.22.43 PM.png

    Edit: Now my battery health is at 100.6% after 2 minutes from posting this. :confused:
     
  8. Dark Void macrumors 68030

    Dark Void

    Joined:
    Jun 1, 2011
    Location:
    Cimmerian End
    #8
    I wouldn't obsess too much over the battery. Just use it and let it discharge once in a while. It fluctuates, it may display 100% again tomorrow.
     
  9. afinch1992 macrumors 6502

    afinch1992

    Joined:
    Sep 13, 2012
    Location:
    Dallas, Tx
    #9
    i wouldnt worry about it unless youre getting extremely low usage out of it.
     
  10. M5RahuL macrumors 68020

    M5RahuL

    Joined:
    Aug 1, 2009
    Location:
    Colorado
    #10
    I'm @ 20 cycles [ ~ 1.5 months ] on my rMBP and it's at 100.2%

    It keeps fluctuating between 100 - 98%
     
  11. BANANACANADA macrumors member

    Joined:
    Sep 2, 2012
    #11
    Have you calibrated yet? if not thats great.
     
  12. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #12
    The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries in older Apple notebooks.
     
  13. Wafflausages macrumors 6502

    Joined:
    Jun 27, 2010
    #13
    Take it to an Apple store and tell them. They'll give a new battery free of charge
     
  14. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #14
    That's only true if they determine the battery is defective, and only if it's still covered by warranty or AppleCare. Typically, they won't even consider it until the health is below 80%.
     
  15. BANANACANADA macrumors member

    Joined:
    Sep 2, 2012
    #15
    You learn something new everyday :p
     
  16. bansheebeat macrumors regular

    bansheebeat

    Joined:
    Oct 14, 2011
    #16
    300 cycles and 90% health. Not sure how good that is.
     
  17. RMSko macrumors 6502

    Joined:
    Sep 3, 2010
    #17
    26 cycles and at 102% of capacity. That said, there have been times it has gone down to 100% of capacity and then back up to its current level of 102%.
     
  18. jvpython macrumors 6502

    Joined:
    Aug 25, 2011
    Location:
    New Zealand
    #18
    I got new 15" MBP about a week ago and the battery is still showing me close to 102% capacity... Cool
     

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