Battery capacity suddenly down?

Discussion in 'MacBook Pro' started by Suno, Mar 8, 2013.

  1. Suno macrumors 6502

    Suno

    Joined:
    Dec 12, 2011
    #1
    It's actually rather shocking and alarming.

    Just as of March 4th, I was only on 103 cycles and still had a capacity of 6917. I've always maintained a good capacity of 6900+. It's always fluctuated but has always been above the design capacity threshold.

    Now, 4 days later (and 5 cycles later, it's 108 now), it's dropped to 6717, dropped by 200 mAh! I don't even know what I did. The lowest I've had it dropped to previously was around the low 6800s, but never down to 6700, let alone within 4 mere days.
     
  2. xShane macrumors 6502a

    xShane

    Joined:
    Nov 2, 2012
    Location:
    United States
    #2
    Was it plugged in the whole 4 days? Was it unplugged for a lot of time during the 4 days?
     
  3. GGJstudios, Mar 8, 2013
    Last edited: Mar 8, 2013

    GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #3
    It is perfectly normal if your battery health (maximum capacity) is more or less than 100%, even when brand new, or if it fluctuates up or down over time. Your fluctuation is only about 2%, which is nothing to worry about. For further details, read the CHECKING STATUS AND HEALTH section of the following link.

    The link below should answer most, if not all, of your battery/charging questions. If you haven't already done so, I highly recommend you take the time to read it.
     
  4. Suno thread starter macrumors 6502

    Suno

    Joined:
    Dec 12, 2011
    #4
    I've had to take it on the go these past 4 days, more so then the usual amount. Normally I only take it to school and back, but this time I had to take it to various places.
     
  5. xShane macrumors 6502a

    xShane

    Joined:
    Nov 2, 2012
    Location:
    United States
    #5
    I think it's normal and wouldn't worry about it too much.

    I'd only be concerned if I were you if there was a drastic drop.
     

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