MBP has been plugged in all day but charge stopped at 97%?

Discussion in 'MacBook Pro' started by rudyrox, Feb 25, 2009.

  1. rudyrox macrumors member

    Feb 4, 2009
    i leave my mbp plugged in (which i got 2 days ago) and its in better performance mode. yet when i turned it on it says the charge is 97%. how can that be? there isn't even a time next to it saying when its going to be 100%
  2. ayasin macrumors 6502

    Jun 26, 2008
    That happens to me sometimes, it's easy enough to fix. Unplug your machine and let it run down below 95%, then plug it back in. It should charge to 100%.
  3. rudyrox thread starter macrumors member

    Feb 4, 2009
    so its not a faulty battery that doesn't have its full life?
  4. nopassn macrumors regular

    Jan 15, 2009
    Kansas City
    Nah... mine did that the other day too... I took it off the battery for a half hour or so and ran it down a bit and then plugged it in when I got done using it... charged back to 100% the following morning.
  5. ergdegdeg Moderator emeritus


    Oct 13, 2007
    No, it's a method to make battery life longer as it only charges back up when it gets below 95%.
  6. darngooddesign macrumors G3

    Jul 4, 2007
    Atlanta, GA
    Apple did that so the battery wouldn't be constantly charging for tiny increments; its better for the overall life of the battery. I wouldn't sweat it if I were you.
  7. dmmcintyre3 macrumors 68020

    Mar 4, 2007
    That is normal my PowerBook does it all the time. In fact it is doing it now time to run it down to 94% and back up
  8. Patriks7 macrumors 65816


    Oct 26, 2008
    As far as I'm aware, it doesn't start charging again until it reaches 95%.

    Edit: Looks like I'm late to the party again :p
  9. rudyrox thread starter macrumors member

    Feb 4, 2009

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