100% Battery to 97% instantly???

Discussion in 'MacBook Pro' started by serialtoon, Mar 5, 2010.

  1. serialtoon macrumors 6502a

    serialtoon

    Joined:
    Jul 1, 2009
    Location:
    Long Beach
    #1
    So i charged my battery to 100% and then unplugged it from the charger. Thats when the battery dipped to 97% instantaneously. It was very odd and somewhat scary. I just bought this MBP 2 days ago! Anything i might be missing? Is it supposed to do that?
     
  2. spinnerlys Guest

    spinnerlys

    Joined:
    Sep 7, 2008
    Location:
    forlod bygningen
    #2
    It might not be normal, but the battery capacity reader is not very exact.

    Monitor the behaviour for some days, and if it does change, don't worry.

    And don't worry now.


    Also have a look at the following links, as the information presented there might be helpful in your future endeavours into Mac OS X and could clear up initial confusion and may even prevent harm to your system or your files.

    http://www.apple.com/support/switch101/ - text

    http://www.apple.com/findouthow/mac/ - videos

    http://www.apple.com/support/mac101/ - text

    http://support.apple.com/kb/HT1343-keyboard - shortcuts
     
  3. Draythor macrumors 6502

    Draythor

    Joined:
    Sep 12, 2006
    Location:
    Exeter University, UK
    #3
    I think once the charge reaches 100% the charger allows it to dip back to 90% and then charge again to stop over charging the battery.
    That is at least what springs to mind immediately, I can't remember where I read it but I'm pretty sure it was on this forum.

    Can anyone back my 'facts' up here?
     
  4. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #4
    STOP STRESSING!!

    its fine. perfectly normal. leave it be.
     
  5. serialtoon thread starter macrumors 6502a

    serialtoon

    Joined:
    Jul 1, 2009
    Location:
    Long Beach
    #5
    Thank you for the replies. Now, what is a good application to do video screen captures?
     
  6. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #6
    QuickTime X does it out of the box with SL :D

    use that
     
  7. serialtoon thread starter macrumors 6502a

    serialtoon

    Joined:
    Jul 1, 2009
    Location:
    Long Beach
    #7
    Why thank you kind sir! I want to document it and post it on YouTube. That way i can show it to the apple people. Last but not least question. If i bought the Macbook at Best Buy can Apple still service it at their stores? Just curious :)
     
  8. MacDawg macrumors P6

    MacDawg

    Joined:
    Mar 20, 2004
    Location:
    "Between the Hedges"
    #8
    Yes, you can take it to an Apple Store
     
  9. DoFoT9 macrumors P6

    DoFoT9

    Joined:
    Jun 11, 2007
    Location:
    Singapore
    #9
    thats ok :D

    yea for sure just take it straight in, if it doesnt need any work on it then its free :D

    u might have to book in but
     
  10. ARF900 macrumors 65816

    ARF900

    Joined:
    Oct 30, 2009
    #10
    I really dont think you have a problem, you really should calibrate the battery since it is brand new. That would probably fix it. A reboot would probably fix it, and if not, its nothing to worry about. There are times when my MBP will sit on the charger at 99% and refuse to go to 100%, and times when that doesnt happen.
     
  11. serialtoon thread starter macrumors 6502a

    serialtoon

    Joined:
    Jul 1, 2009
    Location:
    Long Beach
    #11
    Is there some kind of guide to show me a calibrating technique? Thanks! You guys are pretty darn helpful.
     
  12. thecoolone1 macrumors regular

    Joined:
    Apr 13, 2009
    #12
    Here you go:

    http://support.apple.com/kb/HT1490
     
  13. mrsir2009 macrumors 604

    mrsir2009

    Joined:
    Sep 17, 2009
    Location:
    Melbourne, Australia
    #13
    Battery meters jump around everywhere... lol. On my cellphone it says its fully charged for 3 days then it goes down to 0% in 1 hour!
     

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