new SB MBA 11" bad battery and 25 weeks old?

Discussion in 'MacBook Air' started by aeror, Jul 24, 2011.

  1. aeror
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    macrumors newbie

    Joined:
    Aug 4, 2009
    #1
    Just bought my 11" sandybridge mba and coconut battery 2.7 shows 98% maximum capacity and that the computer is 25 weeks old.
    I've gone through a couple of charge cycles and calibrated the battery once.

    Anyone else has this?
     
  2. kenwalton
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    macrumors newbie

    Joined:
    Aug 23, 2010
    #2
    Mine says 25 weeks old and 97% capacity. I too was perplexed by this.
     
  3. krogers34
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    macrumors member

    Joined:
    Jul 17, 2008
  4. coolbreeze
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    macrumors 65816

    Joined:
    Jan 20, 2003
    Location:
    UT
    #4
    It's probably an issue with coconut battery itself.

    I remember on my brand new 17" MBP last year, CB was reporting the battery was like 170 days old. Impossible. It was widely known as a bug with the app.
     
  5. jmp51483
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    macrumors newbie

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    Apr 22, 2010
  6. theSeb
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    macrumors 604

    theSeb

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    Aug 10, 2010
    Location:
    Poole, England
  7. Beaverman3001
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    macrumors 6502

    Joined:
    May 20, 2010
    #7
    Don't know what you guys expect, its not like they produce these batteries they instant the assemble the machine. Most of these batteries were probably left over from the 2010 production. The % remaining doesn't matter right now, it will fluctuate a lot from 95-100% your first few hundred cycles.
     
  8. aeror
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    thread starter macrumors newbie

    Joined:
    Aug 4, 2009
    #8
    So the question is, are the batteries actually half a year old or is it a bug with coconut?

    According to wikipedia, lithium-ion batteries loses capacity over time:
    http://en.wikipedia.org/wiki/Lithium-ion_battery#Disadvantages

    Not that it affects anything in reality, but it bugs me if I got batteries that started declining in capacity before I even bought it (day at release).

    Krogers34: Download coconut battery.
     
  9. bursthead
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    macrumors 6502

    Joined:
    Apr 9, 2010
    #9
    My battery capacity is 101%, but i have a faulty charge port.. So i have to return it..:(
     

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