A power supply unit for an aerosol inhaler includes: a power supply that isable todischarge power to a load for generating an aerosol from an aerosol generationsource； and acontrol unit that is configured to determine whether the power supply which isbeing chargedhas reached a predetermined charge state lower than a fully charged state, andcompletecharging of the power supply in a case of determining that the power supplyhas reached thepredetermined charge state.
