98% = full charge?

Discussion in 'MacBook Pro' started by zblaxberg, May 18, 2007.

  1. zblaxberg Guest


    Jan 22, 2007
    I think I read something somewhere about this but I can't remember. My macbook pro is new and only has like 8 cycles on the battery... I've barely used it but how come a full charge isn't 100%..instead it's 98%? Is there something wrong with my battery already?
  2. TequilaBoobs macrumors 6502a


    Nov 12, 2006
    run your battery down to zero, then recharge. sometimes you need to do this periodically in order to get back to 100%.
  3. plinden macrumors 68040


    Apr 8, 2004
    Don't worry about anything between about 95% and 100%. To save battery life, the laptop won't begin to charge until it falls below some threshold value in the mid-90s. I'm not sure what threshold exactly.
  4. kwood macrumors 6502a


    Jun 26, 2006
    In the Great White North.
  5. Nicolasdec macrumors 65816


    Dec 7, 2006
    São Paulo
  6. marine610610 macrumors regular

    Mar 23, 2007
    Mine normally stays at 100 percent until i shut it down and start it back up later. Then it trickles down a percent or two until it gets to 95. Usually when it starts getting close to that i just switch it to battery power and run it all the way down. Then i let it sit for a couple hours if i have time before charging it back up.
  7. chex macrumors regular

    May 17, 2007
    it doesnt charge if battery power is >95% to prevent it from constantly charging the battery which would kill its ability to hold charge much faster.
  8. zblaxberg thread starter Guest


    Jan 22, 2007
    ok sounds good thanks everyone...just wanted to make sure because its my first mac and its my first laptop so if anything needed to be fixed i'd like to take care of it now rather then when I go off to college in a few months
  9. e12a macrumors 68000


    Oct 28, 2006
    drain it past 95% unplugged, plug it back in and then it'll go back to 100.

    It'll receive a trickle charge after it reaches 100% and it will slowly drop over time.

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