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

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

  1. aeror macrumors newbie

    Aug 4, 2009
    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 macrumors newbie

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

    Jul 17, 2008
  4. coolbreeze macrumors 68000

    Jan 20, 2003
    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 macrumors member

    Apr 22, 2010
  6. theSeb macrumors 604


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

    May 20, 2010
    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 thread starter macrumors newbie

    Aug 4, 2009
    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:

    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 macrumors 6502


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

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