A battery wiring module includes bus bars and a flexible wiring board having wires connected to the respective bus bars. The flexible wiring board has a body portion and extensions extending from the body portion toward the respective bus bars. Each of the extensions supports one of the wires and has an end section where a pad is arranged, that is part of each of the wires. Each of the bus bars has at least one cutout portion, and the pad is arranged on each of the bus bars such that the pad overlaps at least part of at least one cutout portion. The pad and the at least part of the at least one cutout portion are connected to each other with solder.