A charger to supply current from a commercial power source to a battery of an electric vehicle, the charger comprising: a connector connectable to the electric vehicle; a plug connectable to an outlet of the commercial power source to supply the current for charging the battery of the electric vehicle; a switching unit to selectively shut off the current supplied from the commercial power source to the electric vehicle according to the temperature of the charger; a display unit to display information about an operation of the charger; and a control unit to control the operation of the charger, wherein the control unit is configured to: control the switching unit to allow a first current to be applied from the commercial power source to the electric vehicle when the temperature of the charger is less than a predetermined first safety temperature, and characterized in that the control unit is further configured to control the switching unit to allow a second current to be applied from the commercial power source to the electric vehicle when the temperature of the charger is equal to or higher than the predetermined first safety temperature and less than a predetermined second safety temperature, wherein the first current is greater than the second current, and wherein the second current is set to have a value which is inversely proportional to the temperature of the charger. a connector connectable to the electric vehicle; a plug connectable to an outlet of the commercial power source to supply the current for charging the battery of the electric vehicle; a switching unit to selectively shut off the current supplied from the commercial power source to the electric vehicle according to the temperature of the charger; a display unit to display information about an operation of the charger; and a control unit to control the operation of the charger, wherein the control unit is configured to: control the switching unit to allow a first current to be applied from the commercial power source to the electric vehicle when the temperature of the charger is less than a predetermined first safety temperature, and characterized in that the control unit is further configured to control the switching unit to allow a second current to be applied from the commercial power source to the electric vehicle when the temperature of the charger is equal to or higher than the predetermined first safety temperature and less than a predetermined second safety temperature, wherein the first current is greater than the second current, and wherein the second current is set to have a value which is inversely proportional to the temperature of the charger. control the switching unit to allow a first current to be applied from the commercial power source to the electric vehicle when the temperature of the charger is less than a predetermined first safety temperature, and characterized in that the control unit is further configured to control the switching unit to allow a second current to be applied from the commercial power source to the electric vehicle when the temperature of the charger is equal to or higher than the predetermined first safety temperature and less than a predetermined second safety temperature, wherein the first current is greater than the second current, and wherein the second current is set to have a value which is inversely proportional to the temperature of the charger.