A novel automobile charger which comprises a direct current voltage, wherein a positive pole of the direct current voltage 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 a battery is connected with the other end of the DC to DC module, one end of a microcontroller, one end of an automobile start control module and the other end of the battery voltage detection module simultaneously. A third end of the DC to DC module is connected with the other end of the microcontroller, the other three ends of which are connected with a third end of the battery voltage detection module, the other end of the automobile start control module and one end of a load detection module respectively. The other end of the load detection module is connected with a third end of the automobile start control module and the other end of the load module simultaneously.