NOVELTY - A high-output lithium secondary battery has a cathode including a first cathode active material having a layered structure comprising a lithium-nickel-manganese-cobalt oxide containing other metal and an anion, and a second cathode active material having a spinel structure containing lithium-manganese metal oxide containing other metal. The second cathode active material makes up 40-100 wt% of the total weight of the two types of cathode active material. The battery also includes an anode having as active material crystalline graphite with a specific surface area per capacity of 0.005-0.013 m2/mAh, and a separator.    USE - High-output lithium secondary battery for use in a battery module of a power storage system that is utilized in an electric vehicle or hybrid electric vehicle (all claimed).    ADVANTAGE - The battery has high energy density, durability, stability, reliability and safety, discharge voltage, and output characteristics.    DETAILED DESCRIPTION - A high-output lithium secondary battery has a cathode having a first cathode active material having a layered structure and a second cathode active material having a spinel structure, an anode having as an active material, crystalline graphite with a specific surface area per capacity of 0.005-0.013 m2/mAh, and a separating film. The content of the second cathode active material is 40-100 wt% of the total weight of the cathode active material. The layered structure contains a compound of formula Lix(NivMnwCoyMz)O2-tAt and the spinel structure contains a compound of formula LiaMn2-bM1bO4-cA1c.    x, a = greater than 0.8 but less than or equal to 1.3,    b = 0-0.5,    c = 0-0.3,    v, w, y and z = 0-0.9,    x+v+w+y+z = 2,    t = 0-0.2,    M = metal cation(s) or transition metal cation(s) having the oxidation number of +2 to +4 valence, preferably aluminum, magnesium or titanium,    M1 = metal cation(s) or transition metal cation(s) having the oxidation number of +2 to +4 valence, preferably cobalt, manganese, nickel, aluminum, magnesium or titanium, A and A1 are a mono or di-anion (-1 or -2 valence), preferably halogen, S and N.