MacBook Pro battery drain while charging?

Discussion in 'MacBook Pro' started by Xscapes, May 12, 2012.

  1. Xscapes macrumors regular

    Joined:
    Oct 16, 2011
    Location:
    New York
    #1
    I have my MacBook plugged to my thunderbolt display magsafe and use it as desktop very often. When I unplug it just now the battery shows only 87%. It usually 97 or 98% when i unplug it when i have it plugged for few days. Anyone else have this problem?
     
  2. Interstella5555 macrumors 603

    Interstella5555

    Joined:
    Jun 30, 2008
    #2
    It's possible to use more power than can be recharged, so your computer will "lose" power while charging.
     
  3. GuitarG20 macrumors 65816

    GuitarG20

    Joined:
    Jun 3, 2011
    #3
    Yes, if you exceed the wattage supplied by the charger (60W for 13", 85W for 15/17") then you will use all the power supplied by the charger and a little bit out of the battery. This should only happen during heavy system load though.
     

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