iBook battery/power issue

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Black MacBook 2.2GHz C2D, 4GB Ram - iMac G4 700MHz, 512MB Ram
For some reason lately, my iBook doesn't enter sleep mode when the battery gets low. It just shuts off as if the battery was pulled. Is there a setting somewhere that I missed? I tried looking in Energy Saver but saw nothing.

I also tried a SMC reset, maybe that will help...

Any suggestions would be appreciated. :)
 

chscag

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Not sure of the reason, but an iBook uses the main battery to keep the PRAM capacitors charged. An iBook does not have a PRAM battery like other Mac notebook computers. When the main battery gets low or goes off line, the iBook may not even boot up. It could be that you need a new battery.
 

dtravis7


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My ibook G4 started doing that when the battery was around 5 years old and it's because the battery is dying. It now won't get below maybe 30% without shutting down the iBook.
 
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MacDude121
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My ibook G4 started doing that when the battery was around 5 years old and it's because the battery is dying. It now won't get below maybe 30% without shutting down the iBook.

Ah, that explains a lot. My iBook just did it again a few hours ago, while the battery said it still had 21%.

Under system profiler it says my battery cycle count is 378, so I guess that's quite a bit.
 

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