Abstract: Provided is electronic equipment in which an electric power of a battery or a secondary battery, having a high internal resistance, can be efficiently utilized. The electronic equipment includes: a first battery such as a battery or a secondary battery, having a high internal resistance; an electric condenser having an internal resistance lower than that of the first battery for accumulating therein an electric power of the first battery; a charge control circuit for controlling a charge current, for the electric condenser, originating from the electric power of the first battery; and a load driven with the accumulated electric power of the electric condenser.

Abstract: A non-aqueous electrolyte rechargeable battery is resistant to the reflow temperature during reflow soldering. The non-aqueous electrolyte rechargeable battery has a positive electrode having an active material comprised of an oxide of molybdenum, a negative electrode comprised of lithium and SiO, an electrolytic solution comprised of a material containing a supporting salt and resistant to the reflow temperature during reflow soldering of the non-aqueous electrolyte rechargeable battery, and a gasket comprised of a compound selected from the group consisting of LCP, PEEK, PEN, and tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin.

Abstract: An electrical double layer capacitor has an electrolyte included of a non-aqueous solvent and a supporting salt dissolved in the non-aqueous solvent. A pair of polarizing electrodes are disposed in confronting relation with one another. A separator is disposed between the polarizing electrodes. The supporting salt contained in the electrolyte exists only in regions proximate a surface of the polarizing electrodes when the electrical double layer capacitor is fully charged. When the electrical double layer capacitor is charged at 3.3 V for 24 hours, a charged current after 24 hours is in the range of from about 5 &mgr;A/cm2 to about 22 &mgr;A/cm2 per unit area of the polarizing electrodes.

Abstract: An electrical double layer capacitor which causes no liquid leakage and capacity decrease due to the side reactions of the electrolyte and has a very low leak current. It holds an electrolyte which contains the supporting salt in such an amount that the ionized supporting salt in the electrolyte mostly migrates close to the surface of the electrode in the fully charged state, so that the electrolyte becomes almost an insulator when the electrical double layer has been formed by full charging. In addition, the positive electrode has a smaller capacity than the negative electrode, so that the capacitor has a high withstanding voltage.

Abstract: An electrical double layer capacitor has an electrolyte comprised of a non-aqueous solvent and a supporting salt dissolved in the non-aqueous solvent. A pair of polarizing electrodes are disposed in confronting relation with one another. A separator is disposed between the polarizing electrodes. The supporting salt contained in the electrolyte exists only in regions proximate a surface of the polarizing electrodes when the electrical double layer capacitor is fully charged. The non-aqueous solvent contains a preselected amount of dissolved supporting salt calculated from a surface area of the polarizing electrodes and a size of a molecule of the supporting salt in an ionized state.

Abstract: A coin-shaped non-aqueous electrolyte rechargeable battery resistant to reflow temperature is provided, said non-aqueous rechargeable battery utilizes a molybdenum oxide, particularly MoO3, for the positive electrode active material, and heat resistant materials for the electrolytic solution, separators, and gaskets.