NOVELTY - The current collection terminal board (41) has a plate-shaped electroconductive material and a to-be-melted portion which melts with a higher priority. The plate-shaped electroconductive material has a bent portion (42) and a flat portion (41a) having a convex portion on one side and a concave portion on the other side. The to-be-melted portion includes a bent portion having a pair of rise portions (42a) rising from the flat portion and a bent apex portion (42b).    USE - Current collection terminal board for secondary battery (claimed) such as lithium ion battery or nickel hydride storage battery used in cordless power tool, bicycle with motive power assistant, hybrid vehicle, etc.    ADVANTAGE - The variation in height of the electrode core material which protrudes from the end surface of an electrode group is prevented, and a reliable connection is made possible, as the to-be-melted portion is selectively melted during welding and the molten metal rapidly penetrates upon the gap between the electrode group, current collection terminal board, and electrode core material. The connection area of the terminal board and the electrode group is increased, and current collection performance can be improved, while increasing the connection intensity. The bent portion can be melted easily and the welding efficiency can be improved. Space-saving of the battery can be achieved, and capacity of the battery can be increased simply.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) secondary battery precursor;    (2) secondary battery; and    (3) manufacturing method of secondary battery.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the exposure edge portion of the electrode core material and a portion of a current collection terminal board which protrude from the end surface of an electrode group.    Electrode group (40)    Current collection terminal board (41)    Flat portion (41a)    Bent portion (42)    Rise portion (42a)    Bent apex portion (42b)