This 4400mAh battery pack should have enough juice to keep your cellphone, iPod, PDA and PSP all charged enough for the Memorial Day weekend. A battery status indicator on the side shows you how much power is left, and the pack can be recharged by any home outlet.
There's nothing like being on vacation and realizing you forgot to charge your work phone so nobody can get in touch with you. Wait, that's a good thing.
Neofree [Neofree via Red Ferret]