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

    Joined:
    Sep 9, 2011
    #1
    Thought this might be of interest to those interested in battery usage stats.

    [​IMG]

    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

    Joined:
    Oct 14, 2008
    Location:
    Florida
    #2
    yeah i don't understand how the program know how old is the the mba
     
  3. macrumors 6502a

    Joined:
    Aug 8, 2011
    Location:
    Land of eternal Spring
    #3
    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 68030

    hfg

    Joined:
    Dec 1, 2006
    Location:
    Cedar Rapids, IA. USA
    #4
    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

    Joined:
    Oct 26, 2008
    Location:
    UK
    #5
    I'm on 9 cycles after 6 weeks because I leave my plugged-in.
     
  6. thread starter macrumors regular

    Joined:
    Sep 9, 2011
    #6
    You should get out more ;)
     
  7. macrumors 6502

    Joined:
    Nov 7, 2009
    #7
    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

    Joined:
    Jul 24, 2011
    #8
    If it makes you feel better, I'm at 96% with 26 cycles.
     
  9. macrumors regular

    Brandon0448

    Joined:
    Aug 2, 2011
    Location:
    Wasilla, Alaska
    #9
    Im at 96% with 37 cycles, I haven't calibrated my battery since I first got it about 2 months ago.
     
  10. macrumors newbie

    Joined:
    Aug 25, 2011
    #10
    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

    Joined:
    Mar 12, 2009
    Location:
    Oporto, Portugal
    #11
    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

    echo.park

    Joined:
    Aug 4, 2011
    #12
    42 cycles, 95% health, 6345 mAh
     
  13. macrumors member

    Joined:
    Jul 25, 2011
    #13
    96 % health - 6457 off the 6700 - 38 cycles - mba since 4th august 2011
     
  14. macrumors 6502

    Joined:
    Sep 8, 2005
    Location:
    Leamington Spa, England
    #14
    It's saying my 2011 11" is 7 months old with 7 loadcycles, 102% battery capacity (4808mAh):)
     
  15. macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #15
  16. thread starter macrumors regular

    Joined:
    Sep 9, 2011
    #16
    I dont see any questions that need answering. This is simply a sharing of battery stats.:rolleyes:
     
  17. macrumors newbie

    Joined:
    Aug 23, 2011
    #17
    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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