An electric lawn mower comprising: a mower body including an electric motor, a cutting blade rotatably driven by the electric motor for mowing a lawn, and a battery mount device configured to be able to mount a battery, wherein: the electric motor is driven with a supply of an electric power from the battery; and the battery is mounted to the battery mount device at a mount position that is displaced from an axis of the electric motor, wherein the battery at the mount position is positioned higher than the electric motor and rearward of the axis of the electric motor, the motor axis extends substantially vertically, the battery has a longitudinal axis, and the longitudinal axis of the battery positioned at the mount position is inclined at an angle, characterized in that the battery at the mount position is located at the upper side of the electric motor, and the battery mount device includes a battery mount base with a pair of slide rails, and the battery is configured to be able to slide on the slide rails in the forward direction for mounting to the battery mount base and in the rearward direction for removing from the battery mount base. a mower body including an electric motor, a cutting blade rotatably driven by the electric motor for mowing a lawn, and a battery mount device configured to be able to mount a battery, wherein: the electric motor is driven with a supply of an electric power from the battery; and the battery is mounted to the battery mount device at a mount position that is displaced from an axis of the electric motor, wherein the battery at the mount position is positioned higher than the electric motor and rearward of the axis of the electric motor, the motor axis extends substantially vertically, the battery has a longitudinal axis, and the longitudinal axis of the battery positioned at the mount position is inclined at an angle, characterized in that the battery at the mount position is located at the upper side of the electric motor, and the battery mount device includes a battery mount base with a pair of slide rails, and the battery is configured to be able to slide on the slide rails in the forward direction for mounting to the battery mount base and in the rearward direction for removing from the battery mount base. the electric motor is driven with a supply of an electric power from the battery; and the battery is mounted to the battery mount device at a mount position that is displaced from an axis of the electric motor, wherein the battery at the mount position is positioned higher than the electric motor and rearward of the axis of the electric motor, the motor axis extends substantially vertically, the battery has a longitudinal axis, and the longitudinal axis of the battery positioned at the mount position is inclined at an angle, characterized in that the battery at the mount position is located at the upper side of the electric motor, and the battery mount device includes a battery mount base with a pair of slide rails, and the battery is configured to be able to slide on the slide rails in the forward direction for mounting to the battery mount base and in the rearward direction for removing from the battery mount base.