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iBook auto-sleeps with 1 hour left on battery

Discussion in 'PowerPC Macs' started by wordmunger, Nov 9, 2005.

  1. macrumors 603

    wordmunger

    #1
    My iBook (in Panther) has an annoying habit. It will run the battery down to about 1 hour to 45 minutes left. Then it will auto-sleep, with no warning, and nothing wakes it up until I plug it in.

    It seems like a calibration problem, but to calibrate the battery, shouldn't I do this exact thing -- run the battery until it auto sleeps? So in effect, I've been calibrating my battery when this happens.

    But if I'm calibrating, then the next time I use the computer, the battery life should be adjusted correctly, right? But it's not -- the same problem keeps recurring.

    The other battery problem I have is that sometimes I'll wake my fully-charged computer from sleep and then I'll get a warning that my battery is nearly dead. The little battery-meter will say that I've got, like 3 minutes left. Sometimes in a minute or two, the battery meter will readjust itself to 3.5 hours or something, but other times, it will auto-sleep and I'll need to wake it up again.

    Anyone had either of these problems before? Any solutions?
     
  2. macrumors 6502

    #2
    New Battery?

    Sometimes when I charge my iB it'll say I got around 3 hrs.

    Use it for five minutes, it drops down to 1.5 hrs.

    I think we both need to get new batteries... ;)
     
  3. macrumors 603

    wordmunger

    #3
    I still get a decent 2-plus hours on my battery, which is only a year old. it just seems like the charge indicator shouldn't be so neurotic.


     
  4. macrumors 68000

    iEdd

    #4
    Tried resetting PMU?
    You should be greatful for having a time meter at all :p This pismo infinitely says "calculating remaining...". Percentage is the only way... *sobs*
     
  5. macrumors 601

    liketom

    #5
  6. Administrator/Editor

    WildCowboy

    Staff Member

    #6
    That's a dying battery...mine used to do that...would slowly run down to ~40%, and then go to sleep with no warning. Then it would happen at ~70%. Now it happens at 92%, about five minutes after I unplug it.
     
  7. macrumors 6502a

    Will Cheyney

    #7
    Download this awesome app - coconutBattery.
    http://www.coconut-flavour.com/coconutbattery/

    Upon loading it up you'll be presented with a similar window to this:
    [​IMG]

    Compare the original battery capacity to the current one. If it's low then you will need to replace the battery.
     
  8. macrumors 601

    liketom

    #8
    excellent app but my mac was bought in April ? i doubt it is really 19 months old ?
     

    Attached Files:

  9. macrumors 6502a

    Will Cheyney

    #9
  10. macrumors 6502a

    Will Cheyney

    #10
    Here's my G5's card :)
     

    Attached Files:

  11. macrumors 603

    wordmunger

    #11
    That's cool, but unfortunately it requires Tiger. So what should I do with my $100 -- upgrade to Tiger or get a new battery?
     
  12. macrumors 601

    liketom

    #12
    thats cool ,
     
  13. macrumors 6502a

    Will Cheyney

    #13
    I highly suggest getting Tiger. You never know, it may fix your problems. If your battery is knackered you generally know about it because it doesn't last very long on a single charge (as in <1 hour).
     
  14. macrumors 68000

    Jovian9

    #14
    I had this problem with a 17" PowerBook back in March of 2004. My PB would get down to 20 minutes remaining and then go to sleep and would not wake back up unless charging/charged. Apple thought it was the battery and replaced it.....that did not solve the problem. It ended up being the logic board.
     
  15. macrumors 6502a

    Will Cheyney

    #15
    Oh dear...
    I don't see how it can be logic board related though. I mean, if the computer keeps crashing or refuses to start up that's one thing - but working faultlessly until the battery starts to drain?
     

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