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    Running on 0%

    Discussion in 'Apple and Mac OS X' started by CanadianDude, Oct 11, 2007.

  1. CanadianDude

    CanadianDude Notebook Deity

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    So today at school I was doing some work and decided that, since my macbook pro's battery was at 100% charge, to drain the hell out of it just for kicks. I also kept track exactly how long it lasted.

    As soon as it reached 0% I assumed it would turn off, but surprisingly it didnt for a while. I timed it and it ran on 0% for 19 minutes before finally dying. So, with screen at half brightness, websurfing, checking nbr, the occasional youtube video, my total usage time was from 11:49 am and it hit 0% at 3:23 pm. Tack on an additional 19 minutes for 0%, thats abot 3 hours and 40 minutes run time. My battery has 87 cycles under its belt and according to istat, is at 94% health. Im impressed.

    Thoughts?

    EDIT: I got the warning msg at 6% , but ignored it. When it went to sleep I pressed some keys and it turned back on then I ran it down.
     
    CanadianDude, Oct 11, 2007
    #1
  2. Paul

    Paul Mom! Hot Pockets! NBR Reviewer

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    This happens when your battery isn't calibrated. There was a pretty long thread about it in the News section a while ago.
     
    Paul, Oct 11, 2007
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  3. Insane

    Insane Notebook Evangelist

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    yeah paul is right. it happens when the battery thinks its worn, when it really isnt.
     
    Insane, Oct 12, 2007
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  4. matthewp

    matthewp Notebook Guru

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    How does one calibrate the battery properly?
     
    matthewp, Oct 12, 2007
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  5. Sam

    Sam Notebook Virtuoso

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    Sam, Oct 12, 2007
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