Why won't my MacBook run on battery power when it is charged?

     I love my 2009 MacBook but whenever I use it I have to have it plugged into the wall and if it ever comes slightly unplugged the laptop shuts off at that instant.  I have checked the charge on the battery from the battery and my laptop says that it is charged to 96 percent.

Your battery is 2 years old? Can you post the number of charge cycles and the other info in System Profiler (if you're on 10.6, it may be a bit different - I'm on 10.7.2 - but go to the apple, then About this Mac, then More Info. Then post the battery information (health and cycle count).

Similar Messages

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    Welcome to Apple Support Communities
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