A charging apparatus for charging a secondary battery (3, 5), comprising: a secondary battery (13, 33) used for buffering; a current supply section (11, 31) for supplying power to the secondary battery (13, 33) used for buffering; a switching control section (12, 32) for switching the charging apparatus between a first mode in which power supplied by the current supply section (11, 31) is accumulated in the secondary battery (13, 33) used for buffering and a second mode in which the secondary battery (3, 5) to be charged is charged with the power supplied by the secondary battery (13, 33) used for buffering; and a temperature adjusting means (16, 36) for adjusting a temperature of the secondary battery (13, 33) used for buffering from outside of the secondary battery (13, 33) used for buffering, characterized in that the temperature adjusting means (16, 36) is adapted to heat the secondary battery (13, 33) used for buffering before the secondary battery (3, 5) to be charged is charged with the power supplied by the secondary battery (13, 33) used for buffering, the temperature adjusting means (16, 36) is adapted to cool the secondary battery (13, 33) used for buffering while the secondary battery (3, 5) to be charged is charged with the power supplied by the secondary battery (13, 33) used for buffering, the cooling for the secondary battery (13, 33) used for buffering by the temperature adjusting means (16, 36) occurs after the heating for the secondary battery (13, 33) used for buffering by the temperature adjusting means (16, 36), and the secondary battery (13, 33) used for buffering includes at least one cell in which a battery element with a positive electrode plate and a negative electrode plate that are laminated therein is sealed with an outer cover film. a secondary battery (13, 33) used for buffering; a current supply section (11, 31) for supplying power to the secondary battery (13, 33) used for buffering; a switching control section (12, 32) for switching the charging apparatus between a first mode in which power supplied by the current supply section (11, 31) is accumulated in the secondary battery (13, 33) used for buffering and a second mode in which the secondary battery (3, 5) to be charged is charged with the power supplied by the secondary battery (13, 33) used for buffering; and a temperature adjusting means (16, 36) for adjusting a temperature of the secondary battery (13, 33) used for buffering from outside of the secondary battery (13, 33) used for buffering, characterized in that the temperature adjusting means (16, 36) is adapted to heat the secondary battery (13, 33) used for buffering before the secondary battery (3, 5) to be charged is charged with the power supplied by the secondary battery (13, 33) used for buffering, the temperature adjusting means (16, 36) is adapted to cool the secondary battery (13, 33) used for buffering while the secondary battery (3, 5) to be charged is charged with the power supplied by the secondary battery (13, 33) used for buffering, the cooling for the secondary battery (13, 33) used for buffering by the temperature adjusting means (16, 36) occurs after the heating for the secondary battery (13, 33) used for buffering by the temperature adjusting means (16, 36), and the secondary battery (13, 33) used for buffering includes at least one cell in which a battery element with a positive electrode plate and a negative electrode plate that are laminated therein is sealed with an outer cover film.