A management device, for managing a plurality of cells (V1 V2 V3) connected in series and comprised in a power storage system, comprising: a voltage measurement unit configured to measure voltages across each of the plurality of cells (V1 V2 V3) connected in series; a plurality of discharge circuits each connected in parallel to a respective one of the plurality of cells (V1 V2 V3); an anomaly determination circuit configured to determine whether or not each of the voltages of the plurality of cells (V1 V2 V3) measured by the voltage measurement unit is within a normal range; and, a controller configured to execute an equalizing process between the plurality of cells (V1 V2 V3) by controlling the plurality of discharge circuits based on the voltages of the plurality of cells (V1 V2 V3) measured by the voltage measurement unit, wherein the controller is configured to set, a first period of intermittent equalization control comprising at least one first cycle of alternating (i) equalizing discharge operation and (ii) voltage measurement without an influence of the equalizing process, and a second period of equalization control off, comprising a second cycle of corresponding suspension of the equalizing discharge operation and voltage measurement without an influence of the equalizing process, wherein, each of the at least one first cycles comprises a first discharge suspension period during which the voltages of the plurality of cells (V1 V2 V3) are measured, to obtain said voltage measurement without an influence of the equalizing process and the second period is shorter than the first period and the second cycle comprises a second discharge suspension period, during which a determination result, according to the anomaly determination circuit, includes a determination that measured voltage across at least one of the plurality of cells (V1 V2 V3) is above a predetermined threshold voltage. a voltage measurement unit configured to measure voltages across each of the plurality of cells (V1 V2 V3) connected in series; a plurality of discharge circuits each connected in parallel to a respective one of the plurality of cells (V1 V2 V3); an anomaly determination circuit configured to determine whether or not each of the voltages of the plurality of cells (V1 V2 V3) measured by the voltage measurement unit is within a normal range; and, a controller configured to execute an equalizing process between the plurality of cells (V1 V2 V3) by controlling the plurality of discharge circuits based on the voltages of the plurality of cells (V1 V2 V3) measured by the voltage measurement unit, wherein the controller is configured to set, a first period of intermittent equalization control comprising at least one first cycle of alternating (i) equalizing discharge operation and (ii) voltage measurement without an influence of the equalizing process, and a second period of equalization control off, comprising a second cycle of corresponding suspension of the equalizing discharge operation and voltage measurement without an influence of the equalizing process, wherein, each of the at least one first cycles comprises a first discharge suspension period during which the voltages of the plurality of cells (V1 V2 V3) are measured, to obtain said voltage measurement without an influence of the equalizing process and the second period is shorter than the first period and the second cycle comprises a second discharge suspension period, during which a determination result, according to the anomaly determination circuit, includes a determination that measured voltage across at least one of the plurality of cells (V1 V2 V3) is above a predetermined threshold voltage.