Carry a spare battery. Let's face it, no matter what your laptop manufacturer says, your battery is going to go on you mid trip, right? Fork over the extra bucks and buy another one. They usually weigh around a pound.
US Airways is determined not to see its Piedmont Airlines workers unionized. Baggage handlers at non-unionized work subsidiaries of US Airways Express, like Piedmont, make half of what their unionized counterparts.