Controlling charging current supplied to plurality of cell modules connected in parallel

A charge control device that controls a charging current to be supplied to a plurality of chargeable and dischargeable cell modules connected in parallel, wherein

• the charge control device performs:
• a selecting operation that selects the maximum value as a maximum current value from current values detected by a current sensor provided in each of a plurality of the cell modules;
• a comparing operation that compares the maximum current value which is selected with a reference current value predetermined as a maximum current value of the current to be supplied to the cell modules;
• and
• an increasing/decreasing operation that increases or decreases, on the basis of a comparison result of the comparing operation, the charging current to be supplied to a plurality of the cell modules by a predetermined specified value,
• wherein the charge control device repeatedly performs the selecting operation, the comparing operation and the increasing/decreasing operation until the maximum current value which is selected becomes the same value as the reference current value.