NOVELTY - The method involves mixing positive electrode active materials with a positive electrode active material layer (15). A charging current value of the positive electrode active material is low with respect to capacitance ratio when the positive electrode active material with low capacitance ratio is selected among positive electrode active materials during charge reaction. A positive electrode current collecting plate (27) and a negative electrode current collecting plate (25) are respectively attached to a positive electrode electrical power collector (11) and an anode collector (12).    USE - Method for charging a battery e.g. non-aqueous electrolyte lithium ion secondary battery (claimed) such as flat laminated-type battery, that is utilized for a motor vehicle. Can also be used for an electric vehicle (EV), a hybrid electric vehicle (HEV), a fuel-cell vehicle, a hybrid fuel cell electric vehicle, a two-wheeled vehicle such as motor-bike, a three-wheeled vehicle, commercial vehicles such as passenger car, lorry, bus and light car, and a portable electronic device.    ADVANTAGE - The charging current value of the positive electrode active material is low with respect to the capacitance ratio when the positive electrode active material with low capacitance ratio is selected among positive electrode active materials during charge reaction, so that heavy current flowing into the positive electrode active material with a small capacitance ratio can be prevented, battery deterioration can be suppressed and durability of the battery can be improved.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) a charge system    (2) non-aqueous electrolyte secondary battery.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a non-aqueous electrolyte lithium ion secondary battery.    Positive electrode electrical power collector (11)    Anode collector (12)    Positive electrode active material layer (15)    Negative electrode current collecting plate (25)    Positive electrode current collecting plate (27)