Circuit arrangement having an evaluation apparatus for determining the cell voltage (U i ) of an individual cell (Z i ) in a cell assembly composed of a series circuit comprising individual cells (Z i ) of a rechargeable battery pack , wherein a potential point (P i ) is formed in each case between electrically adjacent individual cells (Z i ) of the series circuit , and the potentials of the potential points (P i ) which follow one another in the series circuit increase in absolute value starting from a reference potential , wherein each potential point (P i ) of the series circuit is connected to a measuring input of the evaluation apparatus via a measuring resistor (R i ) and a switch (S i ), wherein, by virtue of the circuit arrangement , a first potential point (P 1 ) is connected to the measuring input via a first resistor (Ri), and the potential points (P i ) of the circuit arrangement which follow in the series are connected to the measuring input via measuring resistors (R i ) having increasing values, and the circuit arrangement is designed to connect the individual voltages (U i ) of a partial series circuit comprising the individual cells (Z i ) to the measuring input as a summed voltage by closing a switch (S i ), characterized - in that the measuring input is connected to the reference potential via a measuring capacitor (C), and the evaluation apparatus is designed to measure the charging time (t i ) of the measuring capacitor (C) at a predefined measuring voltage (U M ), - and in that the evaluation apparatus is designed to use the charging time (t i ) of the measuring capacitor (C) and the time constant of the respective active measuring branch (R i ∗ C) as a basis for determining the potential of the potential point and the cell voltage (U i ) of the individual cell (Z i ). wherein a potential point (P i ) is formed in each case between electrically adjacent individual cells (Z i ) of the series circuit , and the potentials of the potential points (P i ) which follow one another in the series circuit increase in absolute value starting from a reference potential , wherein each potential point (P i ) of the series circuit is connected to a measuring input of the evaluation apparatus via a measuring resistor (R i ) and a switch (S i ), wherein, by virtue of the circuit arrangement , a first potential point (P 1 ) is connected to the measuring input via a first resistor (Ri), and the potential points (P i ) of the circuit arrangement which follow in the series are connected to the measuring input via measuring resistors (R i ) having increasing values, and the circuit arrangement is designed to connect the individual voltages (U i ) of a partial series circuit comprising the individual cells (Z i ) to the measuring input as a summed voltage by closing a switch (S i ), characterized - in that the measuring input is connected to the reference potential via a measuring capacitor (C), and the evaluation apparatus is designed to measure the charging time (t i ) of the measuring capacitor (C) at a predefined measuring voltage (U M ), - and in that the evaluation apparatus is designed to use the charging time (t i ) of the measuring capacitor (C) and the time constant of the respective active measuring branch (R i ∗ C) as a basis for determining the potential of the potential point and the cell voltage (U i ) of the individual cell (Z i ). - in that the measuring input is connected to the reference potential via a measuring capacitor (C), and the evaluation apparatus is designed to measure the charging time (t i ) of the measuring capacitor (C) at a predefined measuring voltage (U M ), - and in that the evaluation apparatus is designed to use the charging time (t i ) of the measuring capacitor (C) and the time constant of the respective active measuring branch (R i ∗ C) as a basis for determining the potential of the potential point and the cell voltage (U i ) of the individual cell (Z i ). <EOS>