A lawnmower 10 is disclosed, comprising a chassis 20 including a cutting chamber 21, a cutting blade rotatably mounted within the cutting chamber, and an electric motor 30 mounted to the chassis above the cutting chamber which in use drives the cutting blade. The electric motor 30 is powered by at least two batteries 60 which are spaced from one another to provide an air gap in between. The lawnmower 10 does not have a cover over the major components, and therefore at least the top surface each battery 60 is substantially uncovered in use and open to air. The batteries 60 are mounted on a platform 40 above the motor, a substantial proportion of the underside of which is open to air. Each battery is retained in a docked position on the lawnmower by means of a latch mechanism 70. One or more drainage apertures are provided on the platform 40 adjacent the battery electrical terminals to prevent water forming a continuous bridge between the terminals.
