An industrial vehicle, comprising: - a vehicle body frame; - a travel member installed on the vehicle body frame; - a work device installed on the vehicle body frame; and a - drive power generation section (50, 71) that is provided in the vehicle body frame and that generates drive power to cause the travel member to travel, wherein -- the vehicle body frame has a pair of side frames provided on the left and right sides of the industrial vehicle, -- the work device comprises a pair of lift arms vertically swingably installed on the pair of side frames at their base ends, and a bucket vertically swingably installed on the front ends of the pair of lift arms, and -- the drive power generation section comprises an electric motor that causes the travel member to travel by transmitting drive power to the travel member, and a battery or a combination of a battery and a large capacity capacitor that supplies electric power to the electric motor and forming the sole power source of the vehicle, wherein the travel member comprises a pair of travel members provided on the left and right of the vehicle body frame, the electric motor is provided in the drive power generation section as a pair of left and right electric motors, and by independently controlling the drive of the pair of electric motors, the drive power can be individually transmitted to the pair of travel members and the pair of travel members can travel independently, characterized in that the battery is housed in a battery storage part formed in a planar shape below a floor surface of the vehicle body frame. - a vehicle body frame; - a travel member installed on the vehicle body frame; - a work device installed on the vehicle body frame; and a - drive power generation section (50, 71) that is provided in the vehicle body frame and that generates drive power to cause the travel member to travel, wherein -- the vehicle body frame has a pair of side frames provided on the left and right sides of the industrial vehicle, -- the work device comprises a pair of lift arms vertically swingably installed on the pair of side frames at their base ends, and a bucket vertically swingably installed on the front ends of the pair of lift arms, and -- the drive power generation section comprises an electric motor that causes the travel member to travel by transmitting drive power to the travel member, and a battery or a combination of a battery and a large capacity capacitor that supplies electric power to the electric motor and forming the sole power source of the vehicle, wherein -- the vehicle body frame has a pair of side frames provided on the left and right sides of the industrial vehicle, -- the work device comprises a pair of lift arms vertically swingably installed on the pair of side frames at their base ends, and a bucket vertically swingably installed on the front ends of the pair of lift arms, and -- the drive power generation section comprises an electric motor that causes the travel member to travel by transmitting drive power to the travel member, and a battery or a combination of a battery and a large capacity capacitor that supplies electric power to the electric motor and forming the sole power source of the vehicle, wherein