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  1. #1

    Member Since
    Mar 14, 2010
    Angry Mac Book Shuts Off
    I'm looking for some help with my Mac Book,it will turns off suddenly without
    any warning when the battery indicator gets just below 1 hour remaining.
    This seemed to have started when I upgraded to 10.5, I did saw the warning
    on the screen once the other day ,showed 7 minutes left.I thought things were back to normal but it didn't stay that way.
    All my power settings are at "normal" and I'm showing 227 battery cycles.
    Any suggestions ?

  2. #2

    DavidHH's Avatar
    Member Since
    Feb 28, 2010
    Hamilton, Ontario
    21.5" iMac i5 2.9 Ghz, 15" MBPro i7 2.0 Ghz, iPhone 5, iPhone 4s, ATV2, ATV3, iPad2, iPad Mini
    I would try "calibrating" your battery.
    I have attached a document from Apple's Knowledge Base.

    Mac OS X 10.6 Help: Calibrating a portable computer battery


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