full battery keeps reporting 99%

Discussion in 'MacBook Pro' started by tresnotas, Mar 17, 2011.

  1. tresnotas macrumors newbie

    Feb 27, 2011
    MBP'11 here. I calibrated the battery and all that correctly. It showed 100 percent for a while but then dropped to 99 percent. I drained and recharged it, 100 percent for a while and then 99 percent again.

    Do I need to calibrate it again? Or does it just need some discharging and charging every few days?
  2. kappaknight macrumors 68000


    Mar 5, 2009
    This is a perfect example of knowing enough to be dangerous. No wonder Apple wants us to focus on the experience and as little on the technical aspect as possible.
  3. alust2013 macrumors 601


    Feb 6, 2010
    On the fence
    That's perfectly normal. It's best to use at least 50% of the battery a couple times a week to keep it in good condition.
  4. shot2bits macrumors member

    Mar 1, 2011
    United Kingdom
    Mine is two weeks old, at 99% all the time as well.. :)
  5. GGJstudios macrumors Westmere


    May 16, 2008
    It's perfectly normal that your battery health fluctuates up and down over time. It's also perfectly normal that it may not charge to 100% each time. This should answer most, if not all, of your battery questions:

    That makes no sense.

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