An electric vehicle can include a pair of left and right rear wheels configured to be driven by the rotary driving power of a motor supplied with electric power from a battery. A rear body can support the motor and rear wheels, and is attached at the back of a body frame. A battery box houses at least the battery, and is supported by a battery box supporting frame joined to the body frame below a seat of the vehicle. A monitoring board monitors the state of the battery, and can be located on top of the battery. A BMU collects information from the monitoring board, and a contactor opens and closes the connection between the battery and a drive circuit for the motor. The BMU and the contactor are housed in the battery box and in front of the battery.