An autonomous lawn mower comprising a mower body having at least one motor arranged to drive a cutting blade and to propel the mower body on an operating surface via a wheel arrangement. The mower body includes a navigation system arranged to assist a controller to control the operation of the mower body within a predefined operating area. The autonomous lawn mower also comprises a battery module arranged to provide power supply to the motor, wherein the battery module is placed at a lower position within the rear mower body.
