G4 suddenly shuts down on full battery

Hi all,
My G4 always has to be plugged in ..anytime I attempt to use it on battery it lasts about 10 minutes and then just shuts down. On re-booting it says your computer date is set to march 2004. This may cause eratic behaviour (yeah) but the dates arn't set to that date as I check everytime. took it to mac they took it away and say there's nothing wrong with the machine. get it home BANG...does it again. Any suggestions.....HELP

Hi Sparke,
Sounds like you need to reset the PRAM and NVRAM go here: http://support.apple.com/kb/HT1379?viewlocale=en_US
Carolyn
Message was edited by: Carolyn Samit

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