A round cell battery comprising a stack of substantially cylindrically-shaped electrically conductive grid plates and two or more bus bars. One or more of the bus bars is electrically connected to outer rims of a set of alternating ones of the grid plates in the stack and to a positive voltage post of the battery. A different one or more of the bus bars is electrically connected to outer rims of a different set of alternate ones of the grid plates in the stack and to a negative voltage post of the battery.