Battery charge drops to 20% everytime I turn MBP on

Discussion in 'MacBook Pro' started by Graccce, Jul 10, 2010.

  1. Graccce macrumors newbie

    Joined:
    Jul 10, 2010
    #1
    I got a MBP just last month, the battery capacity has decreased to 97%.

    However, recently, when I turn my MBP on and I check Coconut Battery, the battery capacity remains at 97% but my battery charge is only at 20%. And I kind of leave my MBP plugged in all the time usually at 100% charge, I have no idea why the battery charge keeps dropping and if this is normal.

    As in after I charge it up, turn it off overnight, turn it on the next morning, the battery charge is only 20% and it doesn't charge until I unplug it and plug it in again.

    Is this normal? And I'm sorry if this is a duplicate thread, but all the threads I've found is about the decrease in battery capacity but not drop in battery charge.
     
  2. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #2
  3. Graccce thread starter macrumors newbie

    Joined:
    Jul 10, 2010
    #3
    Thanks for the link. I'll re-calibrate my battery and see what happens!
     
  4. aeboi macrumors 65816

    aeboi

    Joined:
    Sep 20, 2009
    Location:
    Bay Area
    #4
    shouldn't be doing that even if it hasn't been calibrated
     

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