MBA 2011 13" Battery stats after 6 weeks

Discussion in 'MacBook Air' started by Chairman.Jobbie, Sep 26, 2011.

  1. Chairman.Jobbie, Sep 26, 2011
    Last edited: Sep 26, 2011

    macrumors regular

    Sep 9, 2011
    Thought this might be of interest to those interested in battery usage stats.


    Brought on Aug 15th 2011 i think. So after 6 weeks its dropped 60 mAh or 171 mAh from max - 1 to 3%.

    Ive consistently gone from full charge to under 10 mins left and then plugged in the charger to a full charge. Sometimes its gone to zero/off. I havent left it at zero over night (maybe once?).

    66 cycles in 6 weeks :eek: = 11 times a week (1.57 times a day)!

    Note : It says 7 months old but its a 2011 model so i dont understand that except maybe Apple had some part or the complete mba in storage for 6 months before selling.

    UPDATE : I get approx 4.5 - 5.5 hours usage - so avg 5hrs - doing nothing specific. Some downloading, surfing, text work etc. Nothing too processor intensive. Without WiFi on & just text work id get 7hrs. 7hrs as standard would be great.... maybe 2012 model!?
  2. macrumors 6502

    Oct 14, 2008
    yeah i don't understand how the program know how old is the the mba
  3. macrumors 6502a

    Aug 8, 2011
    Land of eternal Spring
    You should'nt be surprised if you're using your MBA all day going from full charge to under 10mins all the time, as that is one cycle.

    It uses the serial number to estimate the age, not sure if it uses the battery (if it's even accesible to the OS) or the machine one, and it hasn't been updated to the new MBA model yet.
  4. hfg
    macrumors 68040


    Dec 1, 2006
    Cedar Rapids, IA. USA
    The funny part is the 435 watt power usage! :eek: :eek: :eek:
    You would have to charge the battery back up every minute or so.

    ... Don't think so .... ;)
  5. macrumors regular

    Oct 26, 2008
    I'm on 9 cycles after 6 weeks because I leave my plugged-in.
  6. thread starter macrumors regular

    Sep 9, 2011
  7. macrumors 6502

    Nov 7, 2009
    Pretty sure it doesn't use the battery info to calc the age of the laptop cos I had my one replaced in my MBP to a brand-spanka and the age didn't reduce/change
  8. macrumors 6502a

    Jul 24, 2011
    If it makes you feel better, I'm at 96% with 26 cycles.
  9. macrumors regular


    Aug 2, 2011
    Wasilla, Alaska
    Im at 96% with 37 cycles, I haven't calibrated my battery since I first got it about 2 months ago.
  10. macrumors newbie

    Aug 25, 2011
    I'm at 92% current capacity (6230 mAh) with 32 cycles... and pretty pissed.
    Already went to an Apple store for them to check it.
    They said Coconut and IStat are not official apple programs and that they will run their own analysis. Conclusion: They say it is "fine"...
  11. macrumors 65816

    Patrick J

    Mar 12, 2009
    Oporto, Portugal
    GGJStudios will be in here any time now with a comprehensive barrage of hyperlinks regarding batteries.

    In the meantime, let it suffice to say the batteries regularly fluctuate up and down the 9x%’s.
  12. macrumors regular


    Aug 4, 2011
  13. macrumors member

    Jul 25, 2011
    96 % health - 6457 off the 6700 - 38 cycles - mba since 4th august 2011
  14. macrumors 6502

    Sep 8, 2005
    Leamington Spa, England
    It's saying my 2011 11" is 7 months old with 7 loadcycles, 102% battery capacity (4808mAh):)
  15. macrumors Westmere


    May 16, 2008
  16. thread starter macrumors regular

    Sep 9, 2011
    I dont see any questions that need answering. This is simply a sharing of battery stats.:rolleyes:
  17. macrumors newbie

    Aug 23, 2011
    Well someone mentioned that he/she did not calibrate the battery once. Apple says the new batteries do not need calibration anymore after all as they come pre calibrated. No one asked about it but I guess that is an information everybody likes to know :)

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