[DuoList] Duo 270c Woes

[Pangrazio, Robert Thomas (UMR-Student)]

I have a 270c that boots great and works like a charm, until you unplug
it. I think I had a faulty battery, but I have found a new one that
seems to work. The battery was reporting that it was not full and has
been charged and seems to hold a charge. After about 1 minute of being
unplugged the computer reports the battery is about dead. It then tells
me to plug or shut down. Here is the weird part: The battery icon in the
upper right reports full. 

Any ideas on what is causing this.

Thanks
Bob