This paper describes the conversion of a standard electric lawn mower that uses 230 V AC power into a modern battery-powered mower with remote control. The aim of this conversion is to enable greater mobility, flexibility, and safety when mowing the lawn, reducing dependence on the electrical grid and extension cords. The conversion process begins with the analysis of the existing mower system and the definition of the necessary components to replace the electric power supply. A suitable lithium-ion battery was selected to provide enough energy for the mower to operate throughout the entire mowing process. The calculation of the battery capacity is described in detail, including the estimation of the motor's energy consumption and the required operating time of the mower. The calculation covers the selection of cells, the configuration of series and parallel connections, and the implementation of protective mechanisms such as a BMS (Battery Management System) for the safety and longevity of the battery. The selection of electric motors was crucial for ensuring the optimal operation of the mower. The paper details the criteria for selecting the motors, including power, efficiency, and compatibility with battery power. Hoverboard motors were chosen due to their availability and suitable characteristics. One of the key steps was reprogramming the hoverboard's motherboard to be used for driving the mower's motors. The paper describes in detail the procedure for modifying the firmware and adapting the electronic components for the specific needs of controlling the mower. This enabled precise control of the motors and integration with the remote control.