MBA battery capacity all over the place

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

  1. DP812 macrumors regular

    Joined:
    Aug 13, 2009
    Location:
    Japan
    #1
    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 G4

    Mlrollin91

    Joined:
    Nov 20, 2008
    Location:
    Ventura County
    #2
    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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