Could anyone tell me if this is normal or not

Discussion in 'MacBook Pro' started by iGlass, Apr 16, 2011.

  1. iGlass macrumors newbie

    iGlass

    Joined:
    Mar 26, 2011
    #1
    [​IMG]

    I have been using my Macbook Pro for about a month and my battery health has dropped to 91% (iStat shows 92%) which isn't looking good at all. Could anyone tell me if this can be fixed ???? I did the battery calibration yesterday but it used to be 94-95% before. Right now it's getting lower and I am a little bit worry about this right now :confused:
     
  2. zwodubber macrumors 6502a

    Joined:
    Apr 1, 2011
    Location:
    PA
    #2
    That does seem odd, here's mine for comparison


    [​IMG]
     
  3. gorskiegangsta macrumors 65816

    gorskiegangsta

    Joined:
    Mar 13, 2011
    Location:
    Brooklyn, NY
    #3
    Check the Power tab in System Profiler just to double check whether CoconutBattery is giving you correct info.

    Try doing battery calibration again:
    charge the battery fully;
    let the battery die and let the computer to go into hibernation;
    wait approx. 5hrs, then plug in the charger and charge it fully again

    If you still see reduced capacity, contact Apple; you may have a defective battery.
     
  4. Lord Appleseed macrumors 6502a

    Lord Appleseed

    Joined:
    Nov 7, 2010
    Location:
    Apple Manor
    #4
    This program is bollocks, mine shows 105% battery health.
     
  5. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #5
    Your battery health will fluctuate up and down over time. It's perfectly normal. Proper calibration instructions are in the following link. This should answer most, if not all, of your battery questions:
    Calibrate it.
     
  6. Lord Appleseed macrumors 6502a

    Lord Appleseed

    Joined:
    Nov 7, 2010
    Location:
    Apple Manor
    #6
    Its a bit too much work just to find out if the battery has lost 1% after a month or not.
     
  7. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #7
    It it's showing 105%, it's not accurate. Calibration isn't tough to do. You can do it overnight.
     
  8. Lord Appleseed macrumors 6502a

    Lord Appleseed

    Joined:
    Nov 7, 2010
    Location:
    Apple Manor
    #8
    I know its not right. I just meant that this whole hysteria about a % more or less is just not worth the time....in my opinion.
     
  9. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #9
    You're absolutely right. It's really not a big deal if it's off or if it fluctuates. I mention it in your case because it's not a problem with coconut battery that makes it show 105%, as you suggested; it's the lack of calibration.
     
  10. squeakr macrumors 68000

    squeakr

    Joined:
    Apr 22, 2010
  11. Fubar1977 macrumors 6502a

    Fubar1977

    Joined:
    Jul 30, 2010
    Location:
    North Yorkshire, UK
    #11
    HaHa, mine always shows this sort of figure when it`s plugged in.

    The main reason to calibrate is that it makes you battery indicator more accurate.
    It has no real effect on the actual health of the battery.
     

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