NOVELTY - A battery portion (104) has a battery (109) which is charged with a signal rectified by a rectifier circuit (105). A switch circuit (107) controls power supplied to the power supply control circuit (103) from the battery or from the antenna circuit (102) using a signal from a low-frequency-signal generating circuit (106). A control circuit selects power to be supplied to the switch circuit by comparing the power supplied from the antenna circuit with that from the battery. It connects the battery and switch circuit when the power from the antenna circuit is lower than that from the battery.    USE - For storing power through reception of a radio signal from an external electric power supply device, e.g. power feeder.    ADVANTAGE - The switch circuit provided in the power supply control circuit supplies power to the load so that the supplied power to the load is regularly controlled. By controlling the power to the load using the switch circuit, the power supply can be conducted intermittently. As a result, reduction in power consumption of the battery is achieved and the load can be operated for a long time even when there is no power supply via radio signals.    DETAILED DESCRIPTION - The battery is selected from the group consisting of a lithium battery, a lithium polymer battery, a lithium ion battery, a nickel metal hydride battery, a nickel cadmium battery, an organic radical battery, a lead-acid battery, an air secondary battery, a nickel-zinc battery, a silver-zinc battery, and a capacitor. The battery includes a current-collecting thin film, a negative electrode active material layer over the current-collecting thin film, a solid electrolyte layer over the negative electrode active material layer, a positive electrode active material layer over the solid electrolyte layer, and a current-collecting thin film over the positive electrode active material layer. The power storage device is applied to an electronic device selected from the group consisting of a digital video camera, a computer, a portable information terminal, and an image reproducing device provided with recording media; an integrated circuit (IC) label, an IC tag, or an IC card attached to a bill, a coin, a security, a bearer bond, a certificate, a packaging container, a recording media, way of transportation, personal belongings, foods, plants, animals, human bodies, clothes, daily articles, or electronic devices.    DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of the power storage device structure.    Antenna circuit (102)    Power supply control circuit (103)    Battery portion (104)    Rectifier circuit (105)    Low-frequency-signal generating circuit (106)    Switch circuit (107)    Battery (109)