A charging device for a storage battery, the charging device comprising: a charging power source adapted to output electric power for charging the storage battery; a charging electric power detecting means adapted to detect electric power charged from the charging power source to the storage battery; a full charge determining means adapted to make a full charge determination of the storage battery; a charging controlling means adapted to conduct charging control by supplying electric power to the storage battery from the charging power source until the full charge determination is made, and further adapted to stop electric power supply to the storage battery from the charging power source when the full charge determination is made, and further adapted to continue electric power supply until the full charge determination is made again; a temperature detecting means adapted to detect a temperature of the storage battery; and a stop time setting means; characterized in that the full charge determining means is further adapted to make full charge determination when chargeable electric power calculated based on a detected value of the charging electric power detecting means drops to a prescribed electric power value set in advance or less; wherein the stop time setting means is further adapted to set a stop time based on at least the detected temperature of the temperature detecting means at the full charge determination; and further adapted to set the stop time to be longer as the detected temperature of the temperature detecting means becomes lower; and wherein the charging controlling means is further adapted to restart electric power supply after the stop time elapses from the stop of electric power supply. a charging power source adapted to output electric power for charging the storage battery; a charging electric power detecting means adapted to detect electric power charged from the charging power source to the storage battery; a full charge determining means adapted to make a full charge determination of the storage battery; a charging controlling means adapted to conduct charging control by supplying electric power to the storage battery from the charging power source until the full charge determination is made, and further adapted to stop electric power supply to the storage battery from the charging power source when the full charge determination is made, and further adapted to continue electric power supply until the full charge determination is made again; a temperature detecting means adapted to detect a temperature of the storage battery; and a stop time setting means; characterized in that the full charge determining means is further adapted to make full charge determination when chargeable electric power calculated based on a detected value of the charging electric power detecting means drops to a prescribed electric power value set in advance or less; wherein the stop time setting means is further adapted to set a stop time based on at least the detected temperature of the temperature detecting means at the full charge determination; and further adapted to set the stop time to be longer as the detected temperature of the temperature detecting means becomes lower; and wherein the charging controlling means is further adapted to restart electric power supply after the stop time elapses from the stop of electric power supply.