A state output system in a system for outputting a deterioration state of a secondary battery mounted on a user device used by a user, comprising: a storage unit which stores information; a deterioration state recognition unit which quantifies a deterioration state of the secondary battery based on information indicative of voltage, current, and temperature of the secondary battery, recognizes the quantified value as a value of the deterioration state of the secondary battery, stores the value of the deterioration state in the storage unit in chronological order, and stores use state information, including position information of the user device and indicative of how the secondary battery was used in the past or until now, in the storage unit in chronological order; a tendency acquisition unit which acquires a tendency of the deterioration state of the secondary battery based on values of deterioration states of the secondary battery at a plurality of past time points stored in the storage unit; a deviation determination unit which determines whether or not a most recent deterioration state is deviating from the tendency based on the tendency of the deterioration state of the secondary battery acquired by the tendency acquisition unit and a value of the most recent deterioration state of the secondary battery recognized by the deterioration state recognition unit; a detailed deterioration state determination unit which, in a case where the deviation determination unit determines that the most recent deterioration state is deviating from the tendency, acquires, from the use state information, geographical characteristic information as information indicative of geographical characteristics that affect the deterioration state of the secondary battery based on past and/or current position information of the user device to determine, based on the position information and the geographical characteristic information, information on a detailed deterioration state including information on geographical characteristics that affected the deterioration state of the secondary battery and/or information on a response according to the geographical characteristics to be recommended to avoid becoming a deterioration state deviating from the tendency; and an output unit which outputs the value of the most recent deterioration state recognized by the deterioration state recognition unit and the information on the detailed deterioration state determined by the detailed deterioration state determination unit. a storage unit which stores information; a deterioration state recognition unit which quantifies a deterioration state of the secondary battery based on information indicative of voltage, current, and temperature of the secondary battery, recognizes the quantified value as a value of the deterioration state of the secondary battery, stores the value of the deterioration state in the storage unit in chronological order, and stores use state information, including position information of the user device and indicative of how the secondary battery was used in the past or until now, in the storage unit in chronological order; a tendency acquisition unit which acquires a tendency of the deterioration state of the secondary battery based on values of deterioration states of the secondary battery at a plurality of past time points stored in the storage unit; a deviation determination unit which determines whether or not a most recent deterioration state is deviating from the tendency based on the tendency of the deterioration state of the secondary battery acquired by the tendency acquisition unit and a value of the most recent deterioration state of the secondary battery recognized by the deterioration state recognition unit; a detailed deterioration state determination unit which, in a case where the deviation determination unit determines that the most recent deterioration state is deviating from the tendency, acquires, from the use state information, geographical characteristic information as information indicative of geographical characteristics that affect the deterioration state of the secondary battery based on past and/or current position information of the user device to determine, based on the position information and the geographical characteristic information, information on a detailed deterioration state including information on geographical characteristics that affected the deterioration state of the secondary battery and/or information on a response according to the geographical characteristics to be recommended to avoid becoming a deterioration state deviating from the tendency; and an output unit which outputs the value of the most recent deterioration state recognized by the deterioration state recognition unit and the information on the detailed deterioration state determined by the detailed deterioration state determination unit.