I have a Ti 500 powerbook that I am in need of a battery for. The current battery never gets fully charged and discharges pretty quickly when my powerbook is not plugged in. This really hasn't been an issue as it is mostly plugged in when used. I am getting ready to take a trip and decided that it would be good to have a new battery that would hold a charge. I went both on line (http://store.apple.com/ ) and to my local Apple store (Dallas/Plano). I couldn't file a battery for my system at the on line store. The people at the Apple store said that my system was too old and my best bet was eBay. Is there anywhere I can get a new battery for my powerbook? Thanks, Jerry K