PROBLEM TO BE SOLVED: To provide an electric working vehicle simplifying electric wiring.SOLUTION: The electric working vehicle includes mower motors for driving mower blades traveling motors for rotating rear tires; a mower motor driver 54 controlling the rotation of the mower motors; traveling motor drivers 53L, 53R controlling the rotation of the traveling motors; and a battery 25 supplying electric power to the mower motors and the traveling motors. The battery 25 is separably mounted on the rear part of a chassis 11. A driver section DS for arranging the mower motor driver 54 and the traveling motor drivers 53L, 53R, and a battery section BS for arranging the battery 25, are separately provided, and couplers 51, 52 are further provided for electrically connecting the battery 25 to the motor driver. The couplers 51, 52 are separably formed, and the mower motor driver 54 and the traveling motor drivers 53L, 53R are arranged on the front side of the couplers 51, 52.