PRISMATIC SECONDARY BATTERY

Provided is a prismatic secondary battery with improved productivity and mounting density. A prismatic secondary battery of the present invention includes a battery can that contains an electric storage element and has a pair of wide surfaces , a pair of narrow surfaces , a bottom surface , and an opening , a lid having a positive electrode-side through hole and a negative electrode-side through hole and closing the opening portion of the battery can , and flat plate-like positive electrode current collector plate and negative electrode current collector plate inserted in the positive electrode-side through hole and the negative electrode-side through hole and extending in a straight line toward the bottom surface . Then, the positive electrode current collector plate and the negative electrode current collector plate are made of different metal materials from each other as main materials, and an insertion position of the positive electrode current collector plate deviates on a side of one of the wide surfaces with respect to an insertion position of the negative electrode current collector plate