Laptop Power Cord, Anyone?

It is odd to get to the usual hotel for the past 8 months worth of weekends, unpack, glad to at least have a piece of regular home activity with you, then realize you don't have your power cord. So my computer is showing the little yellow triangle. What is with 30 minute batteries, anyway?? Not good customer service I say. It's not like it's one of those new toy $399's. Not to insult anyone's computer, but I don't think they use as much power as a full blown LT. Anyway, I'll do what I can, and that's a whole different story ...