A charge-discharge control device, characterized by comprising: a plurality of power converters (11, 21) capable of two-way power conversion to an input side of which a power source is connected and of which positive electrodes on the input side are connected to each other and negative electrodes on the input side are connected to each other; a plurality of power storage devices (13, 23) connected to an output side of the power converters (11, 21) and provided one for each of the power converters (11, 21); and a controller (14, 24) to charge or discharge a power storage device (13, 23) of the power storage devices (13, 23) connected to the power converters (11, 21) by controlling output currents of the power converters (11, 21), wherein the controller (14, 24) charges the power storage devices (13, 23) when the controller (14, 24) acquires no warming-up operation command, and when the controller (14, 24) acquires a warming-up operation command, the controller (14, 24) performs warming-up operation to discharge at least one of the power storage devices (13, 23) and charge at least one other of the power storage devices (13, 23) using power discharged from the at least one of the power storage device (13, 23) and repeatedly performs the warming-up operation while changing at least one of the power storage devices (13, 23) among the power storage devices (13, 23) to discharge and the power storage devices (13, 23) to charge; wherein when the controller (14, 24) acquires the warming-up operation command, the controller (14, 24) discharges the at least one of the power storage devices (13, 23) and charges the at least one other of the power storage devices (13, 23) using power discharged from the at least one of the power storage devices (13, 23) until a discharge time of the at least one of the power storage devices (13, 23) reaches a first threshold and after the discharge time of the at least one of the power storage devices (13, 23) reaches the first threshold, charges the at least one other of the power storage devices (13, 23) using power supplied from the power source connected to the at least one other of the power storage devices (13, 23) via the power converters (11, 21) until a charge time of the at least one other of the power storage devices (13, 23) reaches a second threshold greater than the first threshold in the warming-up operation. a plurality of power converters (11, 21) capable of two-way power conversion to an input side of which a power source is connected and of which positive electrodes on the input side are connected to each other and negative electrodes on the input side are connected to each other; a plurality of power storage devices (13, 23) connected to an output side of the power converters (11, 21) and provided one for each of the power converters (11, 21); and a controller (14, 24) to charge or discharge a power storage device (13, 23) of the power storage devices (13, 23) connected to the power converters (11, 21) by controlling output currents of the power converters (11, 21), wherein the controller (14, 24) charges the power storage devices (13, 23) when the controller (14, 24) acquires no warming-up operation command, and when the controller (14, 24) acquires a warming-up operation command, the controller (14, 24) performs warming-up operation to discharge at least one of the power storage devices (13, 23) and charge at least one other of the power storage devices (13, 23) using power discharged from the at least one of the power storage device (13, 23) and repeatedly performs the warming-up operation while changing at least one of the power storage devices (13, 23) among the power storage devices (13, 23) to discharge and the power storage devices (13, 23) to charge; wherein when the controller (14, 24) acquires the warming-up operation command, the controller (14, 24) discharges the at least one of the power storage devices (13, 23) and charges the at least one other of the power storage devices (13, 23) using power discharged from the at least one of the power storage devices (13, 23) until a discharge time of the at least one of the power storage devices (13, 23) reaches a first threshold and after the discharge time of the at least one of the power storage devices (13, 23) reaches the first threshold, charges the at least one other of the power storage devices (13, 23) using power supplied from the power source connected to the at least one other of the power storage devices (13, 23) via the power converters (11, 21) until a charge time of the at least one other of the power storage devices (13, 23) reaches a second threshold greater than the first threshold in the warming-up operation.