Multifunctional vehicle -mounted power supply

The utility model relates to a multifunctional vehicle -mounted power supply, include inside battery, a plurality of voltage input output port and connect respectively and be in the positive and negative electrode of inside battery and a plurality of voltage converter between a plurality of voltage input output port, voltage converter respectively will inside battery output's voltage conversion is for being suitable for the voltage of voltage input output port output or be external input's voltage conversion for being suitable for the voltage that inside battery charges, the emergent port that starts that voltage input output port igniteed for automobile engine is emergent including the inside battery voltage of output, the power still includes the emergency state module, the emergency state module by inside battery powered, expression SOS morse code's light is sent in the LED circulation in this emergency state module of circular telegram during operation drive. Implement the utility model discloses a multif