Abstract: A vehicle emergency starter supplementary device includes a power input end for the connection of an external mobile power supply device for power input, a power output end, a cigarette lighter receptacle applicable power cable for electrically and detachably connecting the power output end to a cigarette lighter receptacle in a motor vehicle for power output, a control unit, a voltage regulator circuit controlled by the control unit to regulate the voltage of input power for outputting to the power output end, and an input terminal sensor controllable by the control unit to detect the voltage of the input power, an output terminal sensor controllable by the control unit to detect the voltage of the output power.

Abstract: A multi-application vehicle emergency rescue starter includes a housing holding therein a battery and a charging circuit, and an output end located at one side of the housing and electrically coupled with the battery and the charging circuit. The output end includes a first starter power outlet for the connection of a jumper cable, a second starter power outlet for the connection of a power cable for vehicle emergency rescue device, and a USB connector electrically coupled with the battery and the charging circuit and adapted for charging a battery of a mobile electronic device through a USB cable.