Storage battery grid, method of manufacturing storage battery grid, and storage battery using storage battery grid

There is provided a storage battery grid (1) including: a frame bone (2) that includes a substantially rectangular shape; a lug portion (21) that is connected to a first side portion (2a) of the frame bone (2) and projects outwardly from the frame bone (2); a main bone (3X) that extends from the first side portion (2a) to a second side portion (2b) which is opposed to the first side portion (2a); and a plurality of first sub-bones (4, 4N, 4M) that extend obliquely toward the second side portion (2b), at least part of the plurality of first sub-bones (4, 4N, 4M) branching from the main bone (3X) toward both sides, wherein at least part of the plurality of first sub-bones (4, 4N, 4M) is bent (4a, 4b). As a result of such an arrangement the mechanical strength of the storage battery grid is enhanced.