99% Battery

Discussion in 'MacBook Pro' started by Moonkea, Mar 11, 2007.

  1. Moonkea macrumors newbie

    Joined:
    Mar 11, 2007
    #1
    I bought a MacBook yesterday, the 2Ghz white one, and got up early today to calibrate the battery (because I'm paranoid about getting everything absolutely perfect and working as good as possible... If I should have waited a month, please say :) )


    So, my Mac has been telling me that my battery is 99% full, and has done so for the past hour almost. Thought I'd Google it and eventually downloaded CoconutBattery to have a look.


    It's telling me that from 5200 mAh, I've got 5066 left, 97% capacity. It's also telling me that at present that 5066 mAh is full. It reads 100% charge, but the light amber light on the power lead isn't turning green, and the menu bar icon still shows 99%.


    Anything to worry about? CoconutBattery says my Mac is 2 months old, and has gone through 2 battery-loadcycles (whatever they are).

    Of course, yesterday while setting up the Mac, the power lead light did go green, so at least I know the light works...


    Thanks in advance for any help, and props on being a good site for beginners.


    Edit: Having since typed that, I turn the power off at the plug, pulled the lead out and low and behold, the battery now reads 100% on the menu bar. Does it ever get to 100% with the power lead in?
     
  2. OllyW Moderator

    OllyW

    Staff Member

    Joined:
    Oct 11, 2005
    Location:
    The Black Country, England
    #2
    I bough a second hand Macbook Pro on Friday. It was 7 months old but the battery had only been cycled 6 times.

    I thought it would be a good idea to condition the battery so I put it on charge and it also got stuck on 99%. I've run the calibration routine and now it charges to 100% with no problems.

    I would condition the battery anyway and see how it behaves afterwards.
     
  3. Moonkea thread starter macrumors newbie

    Joined:
    Mar 11, 2007
    #4
    Ah, cheers.

    Probably should have looked on the Apple site first, I guess...
     
  4. 00hkelly macrumors 6502

    Joined:
    Nov 15, 2006
    #5
    i also find that the capacity of the battery changes. a while ago my battery was down to about 94% but now it is back up again. just depends i guess nothing is really set in stone.
     

    Attached Files:

  5. smueboy macrumors 6502a

    smueboy

    Joined:
    Oct 30, 2006
    Location:
    Oz
    #6
    Just remember to use your MB on battery once or twice a week to keep it healthy (another recommendation from Apple) - being plugged in 100% of the time is not good for the battery.
     
  6. MSM Hobbes macrumors 6502

    Joined:
    Aug 25, 2006
    Location:
    NE Hoosierana
    #7
  7. dr427 macrumors regular

    dr427

    Joined:
    Oct 13, 2005
    Location:
    Oklahoma City
  8. siurpeeman macrumors 603

    siurpeeman

    Joined:
    Dec 2, 2006
    Location:
    the OC
    #9

    apple suggests once every few months.
     
  9. smueboy macrumors 6502a

    smueboy

    Joined:
    Oct 30, 2006
    Location:
    Oz
    #11
    only if you use it infrequently: http://www.apple.com/batteries/notebooks.html. If you use your MB every day: "Apple does not recommend leaving your portable plugged in all the time."
     
  10. drake macrumors 6502a

    drake

    Joined:
    Jul 5, 2005
    #12
    My battery capacity was never anywhere near that. I recall that it was never above 4900mAh, now its more like 4500mAh after eight months.
     

Share This Page