Charging stations are divided into two different charging types: AC charging stations (alternating current) and DC charging stations (direct current). With AC charging stations, charging capacities between 3.7 and 44 kW are possible. The alternating current is converted into direct current inside the electric vehicle, by means of a rectifier, as the battery is charged with direct current. In the case of the DC charging stations, the current is already converted into direct current within the charging station. With this charging method, charging capacities of up to 350 kW are possible. For this reason, these charging stations are correspondingly more cost-intensive. DC charging stations are mainly used at motorway service stations, as a fast charging process is expected at these locations. In urban areas, the AC charging station has established itself as the standard.