Abstract: The invention relates to a circuit apparatus for the charge and discharge monitoring of electrical accumulators (20) or accumulator cells connected to one another in series to a charging current source (28). The apparatus includes one monitoring module (21) for each accumulator, or for each accumulator cell, with the monitoring module having a charging current limitation circuit and a first signal generator for displaying the operating state of the charging current limitation circuit. The charging current limitation circuit is acted on in dependence on a temperature signal corresponding to the temperature of the accumulator (20), or of the accumulator cell. A control signal circuit (29) is connected to the first signal generators, with the output signal of the control signal circuit (29) being applied to the charging current source (28) in order to control the charging current delivered by it.