MBA battery capacity all over the place

Discussion in 'MacBook Air' started by DP812, Nov 5, 2015.

  1. DP812 macrumors regular

    Aug 13, 2009
    My MBA has had "service battery" on it for years and I've ignored it because it still worked fine. But a few weeks ago, I kept having problems with the charge dropping down to zero so I downloaded coconutBattery and it said that my battery capacity was at 30%. I ordered a replacement battery but then about a week later, the capacity was suddenly at 50%. Now today, it's at 60%.

    How does the battery's life keep going up?
  2. Mlrollin91 macrumors G5


    Nov 20, 2008
    Ventura County
    Once the battery drops below 80% capacity it tends to jump all over the place for the rest of the battery's life. Below 80% its considered 'used up' and just becomes unstable. My MBA is flirting with 80%. It is at 700 charge cycles.

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