Patent ID: 7701166

Claim:
A multi-functional power supply device, comprising: a secondary cell, for storing electric energy, and producing a first voltage and a second voltage; a charging circuit, electrically coupled to said secondary cell, for charging said secondary cell; a first connection unit, for transmitting electric energy transformed by a solar board to said charging circuit, if said first connection unit is connected to said solar board, and for supplying said first voltage to a lighting device, if said first connection unit is connected to said lighting device; a controller, electrically coupled to said secondary cell, for controlling said second voltage to output at least one output voltage to an application apparatus; thereby, said first voltage and said second voltage produced by said secondary cell are used for producing energy for the lighting device and the application apparatus respectively; a power input unit, electrically coupled to said charging circuit, for receiving a utility power to charge said secondary cell; an operation unit, electrically coupled to said controller, for providing an operating interface to modulate said controller to control the magnitude of said output voltage.