A battery replacing apparatus includes a battery mount portion, vehicle hoist members, and a lifting-lowering means for lifting and lowering the battery mount portion. When attaching a battery unit to or detaching a battery unit from the battery support portion of an electric vehicle, the vehicle hoist members are moved together with the battery mount portion to be brought into contact with the vehicle body. The vehicle hoist members are formed like rods extending in the front-rear direction of the vehicle. The vehicle hoist members are arranged on the left and right sides of the battery unit placed on the battery mount portion. The battery unit is attached to the battery support portion of the vehicle or detached from the battery support portion from below.