Patent ID: 8309243

Claim:
A cylindrical alkaline storage battery comprising: a cylindrical case having a conductivity and an outside diameter within a range from 13.5 mm to 14.5 mm; and an electrode assembly contained in said case together with an alkaline electrolyte, said electrode assembly including a negative plate and a positive plate, said negative plate and positive plate being spirally wound with a separator intervened therebetween, said negative plate forming an outermost portion of said electrode assembly and being in contact with an inner wall of said case, wherein said positive plate has a thickness of 0.95 mm or greater, said negative plate includes: a negative substrate made of a metal conductive sheet and having a plurality of through holes, an inner surface and an outer surface in view of a radial direction of the electrode assembly, and a negative active material layer deposited on the negative substrate and containing a negative active material, the negative active material layer including, an inner layer covering the inner surface of the negative substrate and having an overlapping portion overlapping said positive plate adjacent thereto via said separator, an outer layer covering the outer surface of the negative substrate and having an overlapping portion, the overlapping portion overlapping said positive plate adjacent thereto via said separator, and a non-overlapping portion which does not overlap the positive plate via the separator and has a thin section, the thin section being thinner than the overlapping portion thereof and wound at an outermost part of the electrode assembly, and a filler filled in the through holes of the negative substrate, the filler having a filling portion distributed in an area of the negative substrate that is covered by one of the overlapping portions of the inner layer and the outer layer on at least one side thereof a total amount of the negative active material contained in the overlapping portions of the inner and outer layers and the filling portion of the filler ranges from 75% to 100% of a total amount of the negative active material contained in said negative plate; and, a ratio of the sum of the negative capacities of the overlapping portion and the filler distributed in the area of the negative substrate that is covered by the overlapping portion on at least one side thereof to the positive capacity is equal to 1.00 or greater.