LEAD STORAGE BATTERY

A lead-acid battery (100) includes a strap (20) including a base portion (21) including a connection region (22a), a tab portion (30), and an inter cell connection portion (40). A second cross-sectional area is larger than a first cross-sectional area, where the first cross-sectional area is a minimum cross-sectional area of the inter cell connection portion (40) in a plane orthogonal to a first direction (D1), and the second cross sectional area is a minimum cross-sectional area of the strap (20) in a plane (P) dividing the strap (20) into one side corresponding to the connection region (22a) and another side corresponding to the inter cell connection portion (40).