A brush cutter 10 comprised of a frame rod 11, a front end housing 21 fixedly mounted to a front end of the frame rod 11, a cutting blade 25 mounted on a support shaft 24 within the front end housing 21, a rear end housing 31 fixedly mounted to a rear end of the frame rod 11, an electric motor 22 mounted within the rear end housing 31 for rotation of the cutting blade 25, and a source of power supply 40 for supplying electric power to the motor. In the brush cutter, a plurality of rechargeable battery packs 41 adapted to use in electric power tools are used as the source of power supply 40 for the motor.