MacBook Pro Not Fully Charging

Discussion in 'MacBook Pro' started by bobbydd21, Jun 26, 2013.

  1. bobbydd21 macrumors regular

    Joined:
    Nov 26, 2012
    #1
    Hey guys. I recently got a 15" rMBP and noticed something going on with the battery. The battery status at the top of the screen says it is charged 100%. However, when I look in battery health, as well as in the system profiler, it says that it is not charged to 100%. I uploaded a picture of this below. Also, when the MacBook Pro is unplugged, the percentage drops in Battery Health, but stays at 100% at the top of the screen. It eventually drops from 100% but does so after the battery has clearly been used a bit. Does anyone have any ideas on what the problem is or is this normal? Is it even worth bringing it to Apple? Thanks a lot!

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  2. priitv8 macrumors 68020

    Joined:
    Jan 13, 2011
    Location:
    Estonia
    #2
    On mine, the menu bar reads 100% even when iStat Menus clearly shows still 30 minutes to full charge. So the menu percentage is definitley psychologically "adjusted".
     
  3. Yahooligan macrumors 6502a

    Yahooligan

    Joined:
    Aug 7, 2011
    Location:
    Illinois
    #3
    There's much more to charging the battery than simply charging it to 100% and keeping it there. Chances are the icon goes into a "dumb user" mode towards the end of the charge.

    In order to try and maintain battery health it won't keep the battery at 100% if it's plugged in all the time, it will let the battery cycle. Over time you'll likely see it drop down to about 95% and then work it's way back up to 100% even though it was never unplugged and the charge status/LED never changed.

    3rd party tools are probably reading the raw values and don't have the same logic as the menu icon. I wouldn't worry about it as I don't really see any problem.
     
  4. bobbydd21 thread starter macrumors regular

    Joined:
    Nov 26, 2012
    #4
    Oh okay thank you for the responses! I won't worry about it then. Sounds pretty normal it seems.
     

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