Spektrum SPMX32003SLFRX 3200mah 3S 9.9v Smart LiFe ECU Battery with IC – Metro Hobbies
Tip: If you want to build and paint the ship without the plating, place the runners (don't cut the parts off!) in a plastic container, with enough household bleach to cover them. Leave them overnight, and in the morning the plating will rinse right off! The bleach won't hurt the plastic parts.