mid 2012 13" MacBook Air battery life

Discussion in 'MacBook Air' started by ssls6, Jul 16, 2015.

  1. ssls6 macrumors 6502a


    Feb 7, 2013
    I have a mid 2012 13" MBA. It's now 3 years old and I have used 87 out of 1000 charge cycles. The battery shows as having 92% of its original capacity. My battery usage is at 68% of the powered up time.

    Would being at 92% be considered as "normal"?
  2. motrek macrumors 68020

    Sep 14, 2012
    Yes, battery capacity decreases over time regardless of how you use it. A few percent per year is expected.
  3. iKnowMr.Jobs macrumors 6502


    Oct 17, 2010
    That's pretty great. I have a 2012 model as well and last fall I noticed that after 50 cycles, my battery was at 81% capacity, which is way less than Apple's guarantee. I took it to the Bar and even the Genius who served me agreed that it was really strange. Needless to,say, they replaced it for free (I did have AppleCare though).

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