Abstract: A charging structure of an unsheltered electric vehicle has a vehicle with at least a frame, a handling unit and a power unit. The power unit has an output terminal which is one side connected with a mobile and rotary cover by a holding strip to have a water-tight protection, an adapting unit which connects the power unit via the output terminal, and an insertion part which is a movable connection with the output terminal. A rotary cover provides a rotatable connection and a water-tight protection for both combinations of the insertion part and above-mentioned output terminal, a power cord which is electrically connected with the insertion part, and at least a connector electrically connected with the other end of the power cord.

Abstract: This invention relates to an improved charger for vehicle use including an plug of cigarette lighter; a first power cord with one end electrically connected to the plug of cigarette lighter; a transformer that is electrically connected to another end of the first power cord; a second power cord with one end connected to the transformer and has an insertion terminal at another end; and a connection unit with insertion hole at one end to be electrically connected to the insertion terminal of the second power cord, and another end of the connection unit is configured with an insertion part which can easily and conveniently work with various prior-specified power adapter of portable electronic devices.

Abstract: This invention relates to an energy feedback device for the warm-up test of a power supply, which includes a power supply, a current limiter, a transformer and a selector. Moreover, the power supply is a target load tested by a warm-up procedure; external input power enters the selector, and the other end of the selector is electrically connected to the power supply. The current limiter is used to adjust the warm-up power consumed by the load of the power supply under testing. One end of the current limiter is electrically connected to another end of the power supply, and another end of current limiter is electrically connected with the voltage adapter; and another end of the voltage adapter is electrically connected to another end of the selector. Therefore, the device of this invention can effectively provide enhancing the efficiency of power is consumption, over-current protection and multiple application of energy feedback.