| 摘要 |
A method for charging a secondary battery using, as a positive electrode material, a positive electrode active material consisting of a solid solution material has: a first charging step of charging the secondary battery to a first predetermined voltage (V0); and a second charging step of, after the first charging step, charging the secondary battery by setting a second predetermined voltage (V1) lower than the first predetermined voltage as an upper limit voltage. In the first charging step, charging is performed at a constant current. In the second charging step, charging is performed at a constant voltage. |
