Racers have asked us for Li-Po packs vs the Li-Fe so they have the higher voltage that some radio systems will allow you to run, providing higher torque and faster operating servos. This is a big advantage with the new heavier 1/10th and 1/8th vehicles. Each pack is kevlar wrapped and covered in heavy duty orange shrink. The packs have universal plug for operation as well as a balance plug.
Li-Po receiver packs produce more power then Li-Fe so there is a big advantage using these both when your radio system allows full use of 7.2 volts and when used on a system that restricts voltage with a voltage regulator the voltage will stay high and your servos fast for longer runs.