Deteriorating battery life

Discussion in 'MacBook Pro' started by slipper, Oct 20, 2009.

  1. slipper macrumors 68000


    Nov 19, 2003
    I just bought a new 13" MBP just a tad under 2 months ago. According to Coconut Battery it says my battery has 10% less capacity compared to new. Am i just paranoid cause this seems excessive. My old Macbook CoreDuo that i sold never had a battery replacement and it was over 3 years old and still had 70% battery capacity.
  2. miles01110 macrumors Core


    Jul 24, 2006
    The Ivory Tower (I'm not coming down)
    Calibrate it properly and don't worry about it unless it falls under 80% of its original capacity within a calendar year.
  3. Perrumpo macrumors 68000


    Jul 12, 2008
    Doesn't sound like a problem. If its health begins dropping for quickly, though, Apple will test it for you at a genius bar to see if it needs to be replaced.
  4. slipper thread starter macrumors 68000


    Nov 19, 2003
    Hmmm.. Thats odd. I checked on three different occasions and Coconut Battery read the battery at 91% capacity. Just checked it again and it reads at 93% capacity. Whatever.
  5. Av1o3 macrumors member

    Oct 31, 2009
    The battery capacity always fluctuates with coconut battery or any other battery app

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