I use these:
http://www.hobbyking.com/hobbyking/s...arehouse_.html
Gotta do a small amount of trimming for the battery wires. Takes 1 minute...
I am running 2s to keep the part breakage down, and the shear fun level up. Get about 35 minutes out of each pack. The P4de is a great simple little basher!
When it's time for me to rebuy, i will be buying the nano-techs. I use them in my truggy and rock-racer and they have a great discharge and slightly longer runtimes.
Have fun,