PDA

View Full Version : iBook auto-sleeps with 1 hour left on battery




wordmunger
Nov 9, 2005, 12:38 PM
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?



eleveneastgate
Nov 9, 2005, 12:49 PM
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... ;)

wordmunger
Nov 9, 2005, 12:51 PM
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.


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... ;)

iEdd
Nov 9, 2005, 02:13 PM
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*

liketom
Nov 9, 2005, 02:17 PM
http://docs.info.apple.com/article.html?artnum=86284

i would follow the run down as many times as you can and see if it does drop to less then an hour before it goes to sleep

maybe a call to apple care might solve this if the above does not work

WildCowboy
Nov 9, 2005, 02:34 PM
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.

Will Cheyney
Nov 9, 2005, 02:46 PM
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:
http://www.coconut-flavour.com/coconutbattery/files/page2_3.png

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

liketom
Nov 9, 2005, 02:51 PM
excellent app but my mac was bought in April ? i doubt it is really 19 months old ?

Will Cheyney
Nov 9, 2005, 02:55 PM
To see the age of your Mac and where it was 'born' (hehe) - dowload coconutIdentityCard - by the same guy!

http://www.coconut-flavour.com/coconutidentitycard/files/page5_1.png

http://www.coconut-flavour.com/coconutidentitycard/index.html
This will tell you... Perhaps your Mac was old stock? Refurbished?

Will Cheyney
Nov 9, 2005, 02:57 PM
Here's my G5's card :)

wordmunger
Nov 9, 2005, 03:01 PM
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:

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

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

liketom
Nov 9, 2005, 03:02 PM
Here's my G5's card :)
thats cool ,

Will Cheyney
Nov 9, 2005, 03:57 PM
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).

Jovian9
Nov 9, 2005, 04:19 PM
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.

Will Cheyney
Nov 9, 2005, 04:22 PM
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?