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  1. #1
    On battery: shutting down before reaching 0%
    epb's Avatar
    Member Since
    Feb 20, 2007
    Location
    Denmark
    Posts
    24
    Specs:
    MacBook Pro, 2,4 GHz Intel Core i5, 4 GB 1066 Mhz DDR3 RAM, OS X 10.8.2
    On battery: shutting down before reaching 0%
    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..

  2. #2
    On battery: shutting down before reaching 0%

    Member Since
    Sep 21, 2006
    Posts
    246
    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

  3. #3
    On battery: shutting down before reaching 0%
    nZa's Avatar
    Member Since
    Oct 16, 2007
    Location
    Newport News, VA
    Posts
    242
    Specs:
    2.8Ghz MBP
    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?

  4. #4
    On battery: shutting down before reaching 0%

    Member Since
    Mar 30, 2004
    Location
    USA
    Posts
    4,744
    Specs:
    12" Apple PowerBook G4 (1.5GHz)
    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..

  5. #5
    On battery: shutting down before reaching 0%
    hagios1972's Avatar
    Member Since
    Jan 24, 2007
    Location
    Hamilton, New Zealand
    Posts
    343
    Specs:
    MacBook black, Intel C2D 2GHz, 2GB RAM, 320GB WD Scorpio HD
    Have you tried calibrating the battery?

  6. #6
    On battery: shutting down before reaching 0%
    epb's Avatar
    Member Since
    Feb 20, 2007
    Location
    Denmark
    Posts
    24
    Specs:
    MacBook Pro, 2,4 GHz Intel Core i5, 4 GB 1066 Mhz DDR3 RAM, OS X 10.8.2
    Quote 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

  7. #7
    On battery: shutting down before reaching 0%
    hagios1972's Avatar
    Member Since
    Jan 24, 2007
    Location
    Hamilton, New Zealand
    Posts
    343
    Specs:
    MacBook black, Intel C2D 2GHz, 2GB RAM, 320GB WD Scorpio HD
    Quote 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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