Battery with sidewall ribs

A battery container includes a bottom and container walls comprising end wall and partitions for defining container compartments for receiving plate groups of the battery; a plurality of ribs formed on the end walls and the partitions that extend into the container compartments for engaging an adjoining plate group; and wherein the ribs include a first edge that is formed on the container walls and a second edge opposing the first edge and a transition section defined between the first edge and the second edge, wherein the first edge has a first edge height and a first edge width and the second edge has a second edge height and a second edge width, and wherein the second edge width progressively expands proximate the bottom of the container.