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

MacBook - On battery: shutting down before reaching 0%


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epb

 
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As the title of this thread indicates, my MacBook shuts down before reaching the 0% marker when running out of battery... Sometimes on almost 20%, sometimes less. In addition, I don't get a warning saying that the computer is running on reserve battery power before it shuts down (I used to get this message when the computer was i bit newer). Anyone who knows something about this problem? Am I just dealing with an old battery? The computer is about a year old..
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brianj08

 
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i have this same exact issue. if anyone has an answer please help. i was starting to thing my battery just may need to be re-calibrated.

white Macbook 1.83 GHz Core Duo/ 2 GB ram/ 60 GB HDD/ Wireless bluetooth mouse/ JBL Speakers
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nZa

 
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I'm pretty sure that's what it's designed to do. 20% is a bit ridiculous, but mine does it around 5-8%. Why would you want to run your battery to zero and possibly damage your computer or the information you're working with anyway?
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technologist

 
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Quote:
Originally Posted by nZa View Post
I'm pretty sure that's what it's designed to do. 20% is a bit ridiculous, but mine does it around 5-8%. Why would you want to run your battery to zero and possibly damage your computer or the information you're working with anyway?
It should give a warning first, and it should sleep, not shut down. Suddenly dying at an unpredictable level is not normal.

I'd calibrate the battery, of course, and reset the PMU. (http://docs.info.apple.com/article.html?artnum=303319)

Then take it to Apple, or call AppleCare if it doesn't go away..
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hagios1972

 
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Have you tried calibrating the battery?
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epb

 
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Originally Posted by hagios1972 View Post
Have you tried calibrating the battery?
Yes, I have.. I do it frequently as recommended in the MacBook manual. I guess I'll have to talk to Apple then
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hagios1972

 
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Originally Posted by epb View Post
Yes, I have.. I do it frequently as recommended in the MacBook manual. I guess I'll have to talk to Apple then
That is the best move for now ... let us know the outcome. Cheers ...
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