A portable multiple power supply for supplying power to an electronic device of any of various types by utilizing a solar cell and for selectively generating one of various levels of power supply voltage to a device of any of various types operated on different necessary power supply voltages so as to operate the device. The power supply comprises at least one solar cell panel molded and electrically connected multiple solar cells, portable solar power selecting means for selectively coupling the cathodes and anodes of the solar cells to select at least one power supply voltage of multiple power supply voltages, power supply coupling means for connecting the selected power supply voltage to a portable device, and a carrying case containing the solar cell panel, power supply selecting means, and power supply coupling means.