Battery slowly loses charge while plugged in

Discussion in 'MacBook Pro' started by tigress666, Sep 2, 2010.

  1. tigress666 macrumors 68040

    Apr 14, 2010
    Washington State
    Ok, just curious, does anyone else's MBP's battery slowly lose charge over time even though it's plugged in? I've got a 2010 MBP 13".

    Mine only is ever at 100% right after I have used the battery and just recharged it. then it will slowly lose that charge over time until I unplug it, use the battery enough for it to actually charge the battery when I plug it in.

    (Oh, and coconut battery has never said it ever had 100% full original battery capacity, best it ever said was 97%).
  2. Bankaimadness macrumors 6502

    Jun 7, 2010

    Download Istat and look at how many recharge cycles you have.
    This should give you some insight to your problem.
  3. tigress666 thread starter macrumors 68040

    Apr 14, 2010
    Washington State
    Says just 10. I mean it is just a few months old.
  4. Timur macrumors 6502a


    Oct 14, 2008
    The battery loses charge by itself, it's normal. The battery is only loaded when it falls below ~95%. High CPU and GPU load draws from the battery even when plugged in.
  5. GGJstudios macrumors Westmere


    May 16, 2008
  6. greythorne macrumors regular

    Mar 10, 2008
    Yup mine does that too.

    When its fully charged i will just leave it plugged in for atleast 2days then probably on the first day i can see the battery drops to 99% then later on will drop to 98% this is where i will unplug and start from the battery and when the battery drops to lets say 25% i will charge it and the cycle continues for me.

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