Alkaline battery

A battery comprising at least two flat cells stacked on each other and integrally connected along the circumference, said cells each comprising a zinc anode, an alkaline electrolyte, a cathode of a material selected from the group consisting of mercuric oxide, mercury or manganese dioxide or a mixture thereof, and a cell casing in the form of a plastic cup having a bottom comprising elastomeric material a terminal plate, the terminal plates being located both on the upper and lower surfaces of the bottom of the upper cup and abutting a substantial portion of said surfaces, at least one of said terminal plates comprising a plurality of projecting knobs, each knob extending through an aperture located in the bottom of the upper cut and being relatively small relative to the diameter of said bottom, each knob furthermore being conneted to the other terminal plate in such a manner that the plates squeeze about and under pressure abut the material in the bottom of the cup so as to form a pressure seal between the terminal plates and the elastomeric material, and a sealing ring located in said aperture and surrounding said knobs, the sealing ring being deformed by the pressure of the terminal plates.