battery life question

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Oct 20, 2011
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my macbook shuts down @ 20% battery life. Anyone have any similar experience? suggestions?
 
Joined
Mar 30, 2008
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On both of my current Apple laptops, my battery doesn't shut down at 20%, but the icon in the menu bar turns red to alert me of the dwindling remaining capacity. Neither laptop will turn off until battery life hits about 5%.

I'd like to know more about the battery/computer you're using, as it may help me or another forum member pinpoint your problem. The following questions should help:

1. What model of MacBook are you using, how old is it, and what OS version?
2. How long do you typically get per charge?
3. Has your battery lifespan been decreasing?
4. Has the 20% shutdown always been happening?
 

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