A lot of us have finally gotten into the 21st century and now have netbooks or tablets that we plan to use at the convention. I am planning on having all of my lists and scans on that one machine so if it dies I am out of business. It would be very nice if the dealers could bring an extra extention cord so that we could plug in while at their table so that the batteries don't die. I know my machine only has a battery life of 3-4 hours maximum and I am hoping that it will last all day at the tables.