A charging system for transmitting an electric charging current to an energy receiver, wherein the charging system comprises the following: - a charging plug for coupling to a corresponding connecting apparatus; - an electronic control device; - at least one temperature sensor (12, 22) for determining a temperature of a current-carrying component (11, 20) of the charging system, wherein the temperature sensor (12, 22) is data-coupled to the electronic control device for the purpose of outputting temperature measurement data which represents the temperature of the current-carrying component (11, 20), - an ambient temperature sensor for determining an ambient temperature of the charging system; - wherein the ambient temperature sensor is coupled to the electronic control device for the purpose of outputting ambient temperature measurement data which represents the ambient temperature of the charging system; and - wherein the electronic control device is designed to ascertain a differential temperature between the temperature of the current-carrying component and the ambient temperature based on the temperature measurement data and the ambient temperature measurement data and to output a control signal for the purpose of controlling the charging current based on the ascertained differential temperature, wherein the charging system is characterized by the following features: - the charging system further has a memory device which is connected to the electronic control device for the purpose of interchanging electronic data; - a large number of limit differential temperatures which are associated with different ambient temperatures in each case are stored in the memory device; and - the electronic control device is designed to compare the differential temperature with the limit differential temperature which is associated with the ascertained ambient temperature and to output the control signal for the purpose of controlling the charging current when the limit differential temperature is exceeded by the differential temperature. - a charging plug for coupling to a corresponding connecting apparatus; - an electronic control device; - at least one temperature sensor (12, 22) for determining a temperature of a current-carrying component (11, 20) of the charging system, wherein the temperature sensor (12, 22) is data-coupled to the electronic control device for the purpose of outputting temperature measurement data which represents the temperature of the current-carrying component (11, 20), - an ambient temperature sensor for determining an ambient temperature of the charging system; - wherein the ambient temperature sensor is coupled to the electronic control device for the purpose of outputting ambient temperature measurement data which represents the ambient temperature of the charging system; and - wherein the electronic control device is designed to ascertain a differential temperature between the temperature of the current-carrying component and the ambient temperature based on the temperature measurement data and the ambient temperature measurement data and to output a control signal for the purpose of controlling the charging current based on the ascertained differential temperature, - the charging system further has a memory device which is connected to the electronic control device for the purpose of interchanging electronic data; - a large number of limit differential temperatures which are associated with different ambient temperatures in each case are stored in the memory device; and - the electronic control device is designed to compare the differential temperature with the limit differential temperature which is associated with the ascertained ambient temperature and to output the control signal for the purpose of controlling the charging current when the limit differential temperature is exceeded by the differential temperature.