Abstract: A battery outer label 1 including a heat-shrinkable resin film such as of polyethylene terephthalate as a base material 2, a printing layer 5 and a protective layer 6 formed on a front surface of the base material 2, and a vapor-deposited metal layer 3 and an adhesive layer 4 formed on a back surface of the base material 2, wherein the battery outer label 1 has a water vapor permeability in the range of 14 to 30 g/m2·24 h.

Abstract: An opening part of a battery casing is sealed by a sealing unit into which a negative electrode terminal plate, a negative electrode current collector joined to the negative electrode terminal plate, and a gasket are integrated. The gasket includes a boss part through which the negative electrode current collector passes, an outer peripheral part in contact with the opening part of the battery casing, and an annular part arranged between the boss part and the outer peripheral part, and a part of the annular part is formed into a thin part serving as a safety valve. The negative electrode current collector has a body diameter of 1.8 mm or smaller and includes at the end part thereof a collar part. The ratio of the outer diameter of the boss part to the outer diameter of the collar part is 4.0 or smaller.

Abstract: A battery outer label 1 including a heat-shrinkable resin film such as of polyethylene terephthalate as a base material 2, a printing layer 5 and a protective layer 6 formed on a front surface of the base material 2, and a vapor-deposited metal layer 3 and an adhesive layer 4 formed on a back surface of the base material 2, wherein the battery outer label 1 has a water vapor permeability in the range of 14 to 30 g/m2·24 h.

Abstract: An opening part of a battery casing is sealed by a sealing unit into which a negative electrode terminal plate, a negative electrode current collector joined to the negative electrode terminal plate, and a gasket are integrated. The gasket includes a boss part through which the negative electrode current collector passes, an outer peripheral part in contact with the opening part of the battery casing, and an annular part arranged between the boss part and the outer peripheral part, and a part of the annular part is formed into a thin part serving as a safety valve. The negative electrode current collector has a body diameter of 1.8 mm or smaller and includes at the end part thereof a collar part. The ratio of the outer diameter of the boss part to the outer diameter of the collar part is 4.0 or smaller.

Abstract: In order to provide an alkaline dry battery having excellent heavy load discharge characteristics, suppressed polarization at the time of heavy load pulse discharge, and excellent heavy load discharge characteristics after high temperature storage, a nickel oxyhydroxide powder having a tap density of 2.1 to 2.7 g/cm3 and including non-spherical and sheet-like nickel oxyhydroxide particles is included in a positive electrode active material.

Abstract: An alkaline battery excellent in reliability, capable of surely suppressing an internal short circuit due to the growth of a dendritic crystal of zinc oxide, even when the amount of sodium remaining in an electrolytic manganese dioxide powder used for a positive electrode active material is large is provided. The alkaline battery has a positive electrode containing electrolytic manganese dioxide, a negative electrode containing zinc or a zinc alloy, a separator arranged between the positive electrode and the negative electrode, and an alkaline electrolytic solution, the alkaline battery being characterized in that the positive electrode contains 0.1 to 0.7 parts by weight of sodium per 100 parts by weight of electrolytic manganese dioxide, and 0.003 to 0.05 parts by weight of silicon per 100 parts by weight of electrolytic manganese dioxide.

Abstract: The battery assembly includes: an outer jacket for accommodating a plurality of cells, the outer jacket having an upper opening; and a terminal plate having a positive electrode terminal and a negative electrode terminal, the terminal plate closing the upper opening of the outer jacket. The terminal plate has a deflection temperature under load of 100 to 170° C.

Abstract: An alkaline dry battery of the present invention includes a battery case, a sealing plate for sealing an opening of the battery case and a gasket arranged between the battery case and the sealing plate, and further includes, between the gasket and the battery case, a sealant layer comprising 10 to 60 wt % of higher saturated fatty acid having a carbon number of 12 to 22 and 90 to 40 wt % of univalent unsaturated fatty acid. The sealant layer is obtained by using a sealant capable of being applied without the help of an organic solvent, and therefore does not cause harmful effect to the environment and has excellent sealing property.

Abstract: In an alkaline dry battery according to the present invention, a film comprising epoxy adduct polyamide amine having an amine value in the range of 150 to 500 is arranged between a negative electrode current collector and a gasket. Since the epoxy adduct polyamide amine is water-soluble, there is no need to dissolve the epoxy adduct polyamide amine in an organic solvent to form the film comprising the epoxy adduct polyamide amine. Further, the resulting epoxy adduct polyamide amine film is highly resistant to electrolyte leakage.