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Apple Notebooks Apple's notebook computers including MacBook Pro, MacBook, MacBook Air, PowerBook, and iBook.

Mac Book Shuts Off


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fxtx

 
Member Since: Mar 14, 2010
Posts: 1
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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 ?
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DavidHH

 
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Member Since: Feb 28, 2010
Location: Hamilton, Ontario
Posts: 253
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Mac Specs: 21.5" iMac i5 2.9 Ghz, 15" MBPro i7 2.0 Ghz, iPhone 5, iPhone 4s, ATV2, ATV3, iPad2, iPad Mini

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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

DavidH
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