Nitrogen and/or compressed air is used in laser cutting to cut and fabricate the metal used in the charging station. Nitrogen is also used for selective, wave, or reflow soldering machines. This allows for the production of printed circuit boards (PCBs). PCBs are essential in the operation of the charger as they allow the efficient functioning of the different electronics by providing a connection for the electrical components. Compressed air is used throughout the PCB production process.