Apple Says Not To Calibrate...What If I Did?

Discussion in 'MacBook Air' started by donster28, Jul 24, 2011.

  1. macrumors 6502a

    Joined:
    Oct 5, 2006
    Location:
    Great White North
    #1
    This is for the battery experts:

    Call me paranoid but I'm just worried I ruined my brand new MBA's batteries by doing a calibration.

    Nothing unusual about my batteries at the moment, still getting around 4-5 hours in real battery life per charge (only charged it once since I bought it).

    I'm surprised the new MBA batteries have already been pre-calibrated in the factory, as Apple's 'additional information' states. Too bad I didn't read this.

    What do you think?...please ease a paranoid mind. :D
     
  2. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #2
    You don't need to, but even if you would do it, it doesn't harm it.
    ______________________________________________________
    This should answer most, if not all, of your battery questions:
    Apple Notebook Battery FAQ by GGJstudios
    ______________________________________________________
     
  3. Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #3
    You really didn't to anything wrong or terribly harmful if you calibrated your battery.

    Relax and enjoy :)
     
  4. macrumors 601

    alust2013

    Joined:
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    Location:
    On the fence
    #4
    You didn't hurt anything. It wasn't necessary to calibrate, but doing so doesn't hurt it.
     
  5. macrumors 68020

    mulo

    Joined:
    Aug 22, 2010
    Location:
    Behind you
    #5
    just keep using it, de- and recharge it once a day if possible.
    i'm still at 100% battery health just by decharging and recharging 4-5 times a week. This is on a 2011 17" MBP tho.
     
  6. macrumors 65816

    Joined:
    Jul 7, 2011
    #6
    It won't make any difference

    I just stick to a general rule of thumb

    Let it drain completely once a month, all other times keep it topped up

    I let it drain when i first get it. My first full charge gave me 8 hours battery with approx 1 hour standby for lunch
     
  7. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
    located
    #7
    I am on 99% percent health via not doing this, on a two years old MBP with only 246 cycles.
    It is not necessary to daily discharge the MBP, as noted in that FAQ by GGJstudios.
     
  8. 3bs
    macrumors 603

    3bs

    Joined:
    May 20, 2011
    Location:
    Dublin, Ireland
    #8
    How is it that you guys have better battery health. On my 2010 MBA the health is 95% with 96 cycles
     
  9. simsaladimbamba

    Joined:
    Nov 28, 2010
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    located
    #9
    Because the battery health fluctuates, as I am currently on 97% health.
    Just tread that **** I linked to in my first post.
     
  10. macrumors newbie

    Joined:
    May 12, 2011
    #10
    I calibrated my battery about a week after getting my new MBA and my battery health has gained 1% so I'm happy.
     
  11. macrumors 601

    clyde2801

    Joined:
    Mar 6, 2008
    Location:
    In the land of no hills and red dirt.
    #11
    Just don't let it happen again, OP! Otherwise silent black helicopters will cruise over your house in attack formation, while jackbooted vegetarian black turtlenecked thugs rappel out the sides and gain entry into your residence.

    One operative team will find and liberate the Air, and the other will find YOU.

    When Steve Jobs says to not do something with your computer, you'd best listen.
     
  12. macrumors regular

    Joined:
    Jul 28, 2010
    #12
    I calibrated it too when I first got it, this is confusing. Should I drain the battery once a month and then recharge to 100%, or, do the calibration of Apple every two months?
     
  13. simsaladimbamba

    Joined:
    Nov 28, 2010
    Location:
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    #13
    Every one to two months to calibrate is okay.
    Have you taken a look at that FAQ in the first reply yet?
     
  14. macrumors member

    Joined:
    Jun 12, 2011
    #14
    Did I miss something? Where does Apple say that you're not supposed to calibrate the battery?
     
  15. macrumors regular

    Joined:
    Jul 28, 2010
    #15
    Of course, that's what I used to calibrate my MBA the first day I got it. But the title of this thread states that Apple says not to calibrate, which was confusing.
     
  16. thread starter macrumors 6502a

    Joined:
    Oct 5, 2006
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    Great White North
    #16
  17. thread starter macrumors 6502a

    Joined:
    Oct 5, 2006
    Location:
    Great White North
    #17
    Here's the link to ponder on. Just scroll down to 'Additional Information'...the last paragraph:

    http://support.apple.com/kb/ht1490
     
  18. gnasher729, Jul 31, 2011
    Last edited: Jul 31, 2011

    macrumors G5

    gnasher729

    Joined:
    Nov 25, 2005
    #18
    Can't help you there. You are paranoid. Being paranoid will lead to making bad decision, being unable to live in a healthy relationship, and general unhappiness. The battery, which will explode within hours of you reading this post, is the least of your problems.


    Good method of limiting your battery life unnecessarily. The battery has a lifetime of about 1000 charges, so every week you destroy five of your 1000 charges. That's fine if you _need_ to use your MacBook on batteries, but totally wasteful otherwise.
     
  19. macrumors 68030

    Joined:
    Nov 7, 2004
    #19
    Luck of the draw in terms of what the system reports back. My 4 year old Macbook is at 100% health with over 350 cycles whilst my similarly aged Macbook Pro is at 72% health with fewer cycles. Real battery life bears no relation to these figures, obviously, and people just get too hung up on them.
     
  20. 3bs
    macrumors 603

    3bs

    Joined:
    May 20, 2011
    Location:
    Dublin, Ireland
    #20
    So you suggest to just keep it plugged in unless you need to take it somewhere?
     
  21. macrumors G4

    Joined:
    Oct 23, 2010
    #21
    Since it has the deep sleep mode, it makes sense to unplug it when it is fully charged and you aren't using it (e.g. overnight), but, yes, it makes sense to keep it plugged in while you are using it. A full battery cycle is a complete charge and discharge (though I notice the meter in System Preferences in Lion seems to log a new cycle every time it drops below 50% or so).
     
  22. macrumors 6502a

    Joined:
    Sep 16, 2009
    #22
    To OP: don't worry all is fine.
    To everyone else:
    http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

    Gawd, I hate seeing all these FUD comments on the internet regarding Lithium chemistry.

    In short - for optimal battery health:
    1. Don't run the battery flat on a regular basis
    2. Don't make the battery warm on a regular basis
    3. Don't keep the battery at 100% charge the whole time (e.g >3months)

    Your battery life will fluctuate by a few %. This is normal.

    Battery health (actually charge capacity) is likely to be >100% initially, as the capacity spec is a supplier min. spec.
    The monitoring circuitry for measuring the capacity is not accurate to the n-th decimal point. I would estimate +/-2% is normal accuracy.

    Thank you.

    Drive through.
     

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