To provide a battery with low internal resistance and high efficiency in which connection points to a collector plate are evenly distributed on the electrode plate and the number of the connection points is increasable, a battery according to the present invention includes a positive and negative collector plates respectively connected to end surfaces of an electrode assembly. The collector plate, connected to a positive electrode plate, includes a connection area connecting to an edge of the positive electrode plate, and a lead area extended from an outer edge of the connection area. Flange structures, by which the positive and negative electrode plates are connected, are included in the connection area. The flange structures include a ring-shaped flange structure, a linear flange structure, and semi-ring shaped flange structure and semi ring-shaped inner flange structure respectively formed on outer and inner edges of the connection area.