Portable power supply adapter

The utility model relates to a portable power supply adapter, comprising a main body, be provided with rectification potential device in the main part, rectification potential device electricity connection DC output, still be provided with battery chamber and charging circuit in the main part, DC output is connected to battery chamber's electricity, is provided with boost circuit between battery chamber and the DC output, charging circuit sets up between rectification potential device and DC output and the battery chamber is connected to the electricity, is provided with the unilateral conductivity component between charging circuit and the battery chamber. Being a compact structure, having the power adapter of multiple input mode, and can charge for multiple electronic product (including the battery), this power adapter is equipped with safety switch in order to make things convenient for the control input source and to reduce the possibility that the user got an electric shock in addition.