Macbook air 13 inch 2013 Full charge capacity

Discussion in 'MacBook Air' started by senc01a, Nov 3, 2013.

  1. senc01a macrumors regular

    May 31, 2007
    Hi everyone,
    I've noticed a significant decrease of my battery life in my 13 inch macbook air 2013 haswell.
    Looking at the system report, I notice that the Full charge capacity is now: 6884 mah.
    Is that normal?
    I think i remember that it is supposed to be something like 7500 mah, but I can't find any threads or documentation where people post theirs.
    Could you please let me know if you have a similar full charge capacity?

    Full charge capacity: 6884
    Cycle count: 27

    Thanks in advance!
  2. Steve121178 macrumors 601


    Apr 13, 2010
    Bedfordshire, UK
    It's normal for it to drop. Stop worrying about it and enjoy your machine.
  3. senc01a thread starter macrumors regular

    May 31, 2007
    Thanks for your information.
    In any case, do you know what is the supposed full charge capacity?
  4. ccapman670 macrumors regular

    May 31, 2012
    New Orleans / Baton Rouge
    I'm not sure what's it's supposed to be but I bought my 13" air yesterday, have yet to charge it once and it tells me the total charge capacity is 7372.
  5. senc01a, Nov 3, 2013
    Last edited: Nov 3, 2013

    senc01a thread starter macrumors regular

    May 31, 2007
    Thanks for your info.
    In about 2 hours mine has gone down another 100 mah, it now shows 6786.
    Im not sure if this is normal, but it is very disappointing.
    Do you think I should contact the apple support and try to get a replacement?
    Especially considering the following:
  6. teffers macrumors regular

    Jun 23, 2013
    United Kingdom
    Mine is :

    Design Capacity = 7150 mAH
    Current Capacity = 6865 mAH

    Cycles = 47 (12 weeks old)
    Health = 96%

    I know it's easy to get drawn into the numbers and start worrying about drops (mine has dropped 4% in the last 6 cycles) but everything I've read is telling me not to be concerned at this point.

    That being said I'm gonna try and ignore the stats for now and just keep an eye on how long the battery is lasting - which for me is just as good as ever.
  7. mangotears macrumors member

    Jun 29, 2012
    Apple doesn't replace batteries under apple care unless it's defective. Mines was at 69% on 10 months, and they said it was within normal wear. Now at 64%.
  8. dean1012 macrumors regular

    Jul 10, 2008
    For what it's worth, I have the 11" MBA (has less battery capacity than 13") and it's about a month old...

    30 cycles, 5100 mAh.

    I have brightness at 2 or 3 (out of 16) and it lasts me all day at work without a charge without issue...

    I charge it when I get home but it's usually about 50-60% at that point so i bet it'd last well into the night.
  9. mynameis321 macrumors member

    Oct 15, 2013
    Woah, so went down by 30% in 10 months? If it goes down by another 30% in another 10 months you'll only be at 40% capacity in less than 2 years. That's really poor is it not?
  10. mangotears macrumors member

    Jun 29, 2012
    I think mines was an extreme case.. My computer is active throughout most of the day and I'm constantly traveling, unplugging, charging, draining the battery completely, changing temperatures constantly from warm indoors to freezing outdoors.

    The degeneration started slowing down... about 5 months later and I only lost 5% more.

    Still, I get about 3 solid hours of normal usage and I just take my power adapter if I'm going to be out for longer than that.
  11. senc01a thread starter macrumors regular

    May 31, 2007
    I've decided to not look at the full charge capacity anymore, basically because it variates quite a lot. For instance, I might turn on the computer, see it at 6800mha, two hours later it might be at 6500, and then at 6900. Pretty large variations if you ask me. Anyway, I'm getting slightly better battery life with Mavericks the past couple of days, although not as good as I used to with ML.

    Thnks for the info.
  12. teffers macrumors regular

    Jun 23, 2013
    United Kingdom
    It's all over the place for me too.

    I just do as you do, ignore it.
  13. lagisibuk macrumors 6502

    Jun 25, 2013
    Always Somewhere
    dont worry about it, u have 1 year warranty... enjoy
  14. kage207 macrumors 6502a

    Jul 23, 2008
    Um, that's not normal. Apple replaces batteries when they drop below 80% within AppleCare.
  15. copa macrumors member


    Nov 8, 2013
    where can I see cycle count and capacity? Got my MBA on saturday :) best electronics purchase I've made so far
  16. Weaselboy Moderator


    Staff Member

    Jan 23, 2005
    There is a free app Coconut Battery that will show you.

  17. stayley macrumors member

    Oct 1, 2013
  18. jonasdamn macrumors 6502a

    Mar 4, 2013
    My macbook air 2013 13"

    Attached Files:

  19. teffers macrumors regular

    Jun 23, 2013
    United Kingdom
    Mine is up and down (as normal I think):

    It started dropping from a steady 100% at around 38 cycles.

    Attached Files:

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