Abstract: A novel automobile charger which comprise a direct current voltage supply, wherein a positive pole of the direct current voltage supply is connected with one end or lead of a DC to DC module, one end of a battery voltage detection module and one end of a load module simultaneously, while a negative pole of the direct current voltage supply is connected with another end of the DC to DC module, one end of a microcontroller, one end of an automobile start control module and another end of the battery voltage detection module simultaneously. A third end of the DC to DC module is connected with another end of the microcontroller. Other three ends of the microcontroller are connected with the third end of the battery voltage detection module, another end of the automobile start control module and one end of a load detection module respectively. Another end of the load detection module is connected with a third end of the automobile start control module and another end of the load module simultaneously.