Patent ID: RE41675

Claim:
A charging system for charging a plurality of portable devices, each of the portable devices comprising a corresponding charging port for inputting a working voltage of the portable device, each of the portable devices having different working voltages a first portable device of the plurality of portable devices having a first working voltage and a second portable device of the plurality of portable devices having a second working voltage different from the first working voltage , the charging system comprising: a plurality of transformers for transforming a plurality of different input voltages into a standard single DC (direct current) power voltage, each of the transformers having an output port for outputting the standard DC power voltage; a power cord comprising a first connection end connected to the output port of the transformer for inputting the standard single DC power voltage, and a second connection end for outputting the standard single DC power voltage; and a plurality of converters for converting the standard single DC power voltage to the working voltage of the plurality of portable devices, each of the converters comprising an input port removably connected to the second connection end of the power cord for receiving the standard single DC power voltage, and an output port removably connected to the charging port of a portable device for outputting the working voltage of the portable device; wherein when charging the plurality of portable devices, users are capable of connecting the corresponding converters are configured to connect to the power cord, and then connecting the power cord is configured to connect to any one of the transformers so as to use the standard single DC power voltage to charge one of the plurality of the portable devices.