Battery charge drops to 20% everytime I turn MBP on

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

  1. Graccce macrumors newbie

    Jul 10, 2010
    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


    May 16, 2008
  3. Graccce thread starter macrumors newbie

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


    Sep 20, 2009
    Bay Area
    shouldn't be doing that even if it hasn't been calibrated

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