Thanks, I hope to have a "super light" bipe

I will use two Powerflite "power-bar" 1200mah packs, and two JR chargejacks. I wanted to use the powerbars because they are really pretty small, but weigh alot less than the round cheaper ones. The round ones actually weigh more than AA nicads. They also will stack neatly and fit right where the manual says to put the batteries.