Abstract: A lithium-ion battery pack includes a housing, a plurality of lithium-ion cells, a first bus bar, a second bus bar, and an interconnect plate. The control circuit includes a printed circuit board that has a longitudinal axis. Each of the cells has a longitudinal axis that is positioned parallel to a longitudinal axis of the printed circuit board. The plurality of cells are all arranged in at least a first cell stack and a second cell stack. The first bus bar electrically couples the printed circuit board to cell terminals of the first cell stack that are adjacent to the first sidewall. The second bus bar electrically couples the printed circuit board to cell terminals of the second cell stack that are adjacent to the first sidewall. The interconnect plate electrically couples the cell terminals of the plurality of lithium-ion cells positioned adjacent to the second sidewall.