Battery Question

Discussion in 'MacBook Air' started by RMSko, Jun 10, 2012.

  1. RMSko macrumors 6502

    Joined:
    Sep 3, 2010
    #1
    I've had my MBA for 22 weeks and it has gone through 37 battery load cycles. It presently has maximum capacity equal to 93% of design capacity (it originally had maximum capacity equal to 100% of design capacity). I've search ed a lot and have read many threads on battery performance, but I'm wondering whether this degradation in performance is normal for a 5 month old MBA. Anyone have any thoughts?
     
  2. Satnam1989 macrumors 65816

    Joined:
    Nov 16, 2011
    Location:
    Illinois
    #2
    I can say that the 93% isn't really accurate....mine is 23 weeks old and today I'm at 22 cycles....could be more but I tend to leave it plugged in for the most part.....also over the course though my maximum capacity has gone up and down from 93%-97%....Since day One I never saw 100%....have had iStat Pro on and been watching it since first day. I observed the same with my macbook pro when I had it. I wouldn't consider the drop anything until my batter consistently doesn't charge above 95% for over 4+weeks....I had my macbook pro for 8 months total and the maximum capacity went from 92-98% regularly but stuck around 94-95% mostly.

    P.S I cycled the batteries on my MacBook Pro and Air at least 1-2 times a month....but Apple says its not required on the newer macbook's....and I think they are right but for piece of mind you can do it once a month....although I did not cycle intentionally...it was more accidentally because at times I would use my macbook's until the battery completely died while I was away from a outlet.
     
  3. RMSko thread starter macrumors 6502

    Joined:
    Sep 3, 2010
    #3
    Thanks, this is very helpful info. I also "inadvertently" fully cycle my battery for the same reason! I'll keep a watch on it, but it's good to know that everything is probably fine.
     

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