A voltage detecting terminal includes a flat plate-shaped electric contact portion having an insertion hole into which an electrode column of a battery is inserted, and a bent portion formed such that a tip is bent upward with respect to the electric contact portion. The bent portion is provided with a holding portion, and both ends of the holding portion in a plate width direction are expanded in the plate width direction, respectively. The voltage detecting terminal has a lower end surface of the holding portion in a thickness direction abutting against supporting surfaces of the plate and is held by a first housing portion.