Method for charge equalization between two cells (101, 102, 103, 202, 204, 206) of a cell cluster of a battery system (100, 200) that respectively have a cell quiescent voltage, having a charge equalization circuit (110, 260) and an energy buffer store (160, 280) that has a capacitance, wherein the charge equalization circuit (110, 260) is connected between the cell cluster and the energy buffer store (160, 280), the method involving: putting the charge equalization circuit (110, 260) into a first state in which the energy buffer store (160, 280) is charged via the charge equalization circuit (110, 260) and putting the charge equalization circuit (110, 260) into a second state in which the energy buffer store (160, 280) charges one of the two cells (101, 102, 103, 202, 204, 206) by means of a provided charging voltage, wherein the charging voltage provided on the one cell (101, 102, 103, 202, 204, 206) by means of the energy buffer store (160, 280) is higher than each of the two cell quiescent voltages, the method further involving: charging the energy buffer store (160, 280) via the charge equalization circuit (110, 260) in the first state by means of the two cells (101, 102, 103, 202, 204, 206), which are connected in series, wherein in this case the energy buffer store (160, 280) has two memory elements (281, 282) that are coupled in a parallel connection in the first state of the charge equalization circuit (110, 260), and charging the one cell (101, 102, 103, 202, 204, 206) by means of the energy buffer store (160, 280), wherein the two memory elements (281, 282) are coupled in a series connection in the second state of the charge equalization circuit (110, 260). putting the charge equalization circuit (110, 260) into a first state in which the energy buffer store (160, 280) is charged via the charge equalization circuit (110, 260) and putting the charge equalization circuit (110, 260) into a second state in which the energy buffer store (160, 280) charges one of the two cells (101, 102, 103, 202, 204, 206) by means of a provided charging voltage, wherein the charging voltage provided on the one cell (101, 102, 103, 202, 204, 206) by means of the energy buffer store (160, 280) is higher than each of the two cell quiescent voltages, the method further involving: charging the energy buffer store (160, 280) via the charge equalization circuit (110, 260) in the first state by means of the two cells (101, 102, 103, 202, 204, 206), which are connected in series, wherein in this case the energy buffer store (160, 280) has two memory elements (281, 282) that are coupled in a parallel connection in the first state of the charge equalization circuit (110, 260), and charging the one cell (101, 102, 103, 202, 204, 206) by means of the energy buffer store (160, 280), wherein the two memory elements (281, 282) are coupled in a series connection in the second state of the charge equalization circuit (110, 260). charging the energy buffer store (160, 280) via the charge equalization circuit (110, 260) in the first state by means of the two cells (101, 102, 103, 202, 204, 206), which are connected in series, wherein in this case the energy buffer store (160, 280) has two memory elements (281, 282) that are coupled in a parallel connection in the first state of the charge equalization circuit (110, 260), and charging the one cell (101, 102, 103, 202, 204, 206) by means of the energy buffer store (160, 280), wherein the two memory elements (281, 282) are coupled in a series connection in the second state of the charge equalization circuit (110, 260).