FCC ID: HDTRC30100-49 Play Set Requires 1.5V x 4 battery for the Car, and one piece of 9 Volt battery for transmitter. CAUTION: TO AVOID BATTERY BREAKAGE. . Be sure to insert the batteries correctly and always follow the toy and battery manufacturers’ instructions; Do not mix old and new batteries or alkaline, standard (carbon-zinc) or rechargeable (nickel-cadmium) batteries, Always remove weak or dead batteries from the product.