Abstract: A power storage module includes: a plurality of power storage cells; a first indication portion that is provided on each of the power storage cells and that indicates first identification information; and a second indication portion that is provided on each of the power storage cells and that indicates second identification information different from the first identification information. In a state in which the power storage module including the plurality of power storage cells is formed, the first indication portion is exposed to outside of the power storage module, and the second indication portion is not exposed to the outside of the power storage module.

Abstract: A hybrid power source connects a secondary battery and an EDLC. A first switch connects the hybrid power source and a lead acid battery in parallel. A power source controlling portion controls power supply to the hybrid power source and the lead acid battery. The hybrid power source is connected to a starter for starting an engine for a vehicle, and also connected to an electric device except for the starter through the first switch, and the lead acid battery is connected to the electric device, and also connected to the starter through the first switch.

Abstract: A hybrid power source connects a secondary battery and an EDLC. A first switch connects the hybrid power source and a lead acid battery in parallel. A power source controlling portion controls power supply to the hybrid power source and the lead acid battery. The hybrid power source is connected to a starter for starting an engine for a vehicle, and also connected to an electric device except for the starter through the first switch, and the lead acid battery is connected to the electric device, and also connected to the starter through the first switch.

Abstract: In a battery system for a vehicle, a lead battery is connected in parallel to a sub-battery, and a charging resistance r2 of the sub-battery 2 is lower than a charging resistance r1 of the lead battery.

Abstract: In a battery system for a vehicle, a lead battery is connected in parallel to a sub-battery, and a charging resistance r2 of the sub-battery 2 is lower than a charging resistance r1 of the lead battery.

Abstract: In the storage battery system, from the same temperature and the same voltage as both batteries a decrease per day of an open-circuit voltage of the lead-acid storage battery by a self-discharge is ?V1(V/day) and a decrease per day of an open-circuit voltage of the sub-battery by a self-discharge is ?V2(V/day), and a relation of ?V1??V2 is satisfied. The sub-battery is a nickel hydride storage battery.

Abstract: An alkaline storage battery comprises a nickel positive electrode having nickel hydroxide as the main positive electrode active material, a hydrogen absorbing alloy negative electrode having a hydrogen absorbing alloy as the negative electrode active material, a separator, an alkaline electrolyte, and an outer can storing the nickel positive electrode, the hydrogen absorbing alloy negative electrode, the separator, and the alkaline electrolyte, and the hydrogen absorbing alloy is expressed by general formula LaxReyMg1-x-yNin-aMa (Re is at least one element selected from rare earth elements including Y, Re is not La, M is at least one element selected from elements other than Co and Mn), and the alkaline electrolyte contains at least one type of compound selected from a tungsten compound, a molybdenum compound, and a niobium compound, and in a system, the alkaline storage battery and a lead battery are connected in parallel.

Abstract: Disclosed is a sintered nickel positive electrode that has an expanded usable range to a low charging region by using nickel hydroxide having a particular crystal structure as a main component of a positive electrode active material. In the sintered nickel positive electrode of the invention, a nickel sintered substrate is filled, through a plurality of impregnation steps, with a positive electrode active material containing nickel hydroxide (?-Ni(OH)2) as a main component. In addition, the nickel hydroxide (?-Ni(OH)2) has an integrated intensity ratio of a peak intensity in a (001) face of 1.8 or more with respect to a peak intensity in a (100) face, where the peak intensities are determined by X-ray diffraction analysis, while an integrated intensity ratio of a peak intensity in a (001) face with respect to a peak intensity in a (100) face is about 1.5 in the related art. Using the nickel hydroxide having an integrated intensity ratio of the peak intensity in the (001) face of 1.

Abstract: A negative electrode plate of a nickel hydrogen storage battery includes a nonaqueous polymer binder and has an effective surface area per unit capacity of 70 cm2/Ah or more. The density of the first and second separators between positive and negative electrode plates ranges from 450 kg/m3 to 600 kg/m3. The nonwoven fabrics of the separators are formed by combining microfibers and compound fibers through melting portions of the compound fibers. The fibers have a virtually circular cross-section. The microfibers and the compound fibers have a diameter ranging from 1 ?m to less than 5 ?m and a diameter ranging from 5 ?m to 15 ?m, respectively. The proportion of the microfibers to whole fibers ranges from 10 percent by mass to 20 percent by mass. At least one of the nonwoven fabrics of the separators is subjected to sulfonation treatment.

Abstract: A negative electrode plate of a nickel hydrogen storage battery includes a nonaqueous polymer binder and has an effective surface area per unit capacity of 70 cm2/Ah or more. The density of the first and second separators between positive and negative electrode plates ranges from 450 kg/m3 to 600 kg/m3. The nonwoven fabrics of the separators are formed by combining microfibers and compound fibers through melting portions of the compound fibers. The fibers have a virtually circular cross-section. The microfibers and the compound fibers have a diameter ranging from 1 ?m to less than 5 ?m and a diameter ranging from 5 ?m to 15 ?m, respectively. The proportion of the microfibers to whole fibers ranges from 10 percent by mass to 20 percent by mass. At least one of the nonwoven fabrics of the separators is subjected to sulfonation treatment.