NOVELTY - A spinel-type lithium-manganese secondary cell includes a conductive anode member mounted in a through hole of a conductive cell casing by an insulating assembly. The conductive positive electrode member is made of an aluminum alloy mixed with manganese.    USE - For use in secondary batteries employed in e.g., motor-driven vehicles.    ADVANTAGE - The spinel-type lithium-manganese secondary cell has an anode member with an increased mechanical strength. Since manganese mixed with the aluminum alloy of the anode member is an indispensable constituent of the anode active material, it does not cause unwanted chemical reaction e.g. electrolytic corrosion.    DETAILED DESCRIPTION - A spinel-type lithium-manganese (LiMn) secondary cell comprises a conductive cell casing (101) having a through hole (105) defined in one of its ends. An electrode unit (102) having a positive electrode sheet and a negative electrode sheet is impregnated with a non aqueous electrolytic solution between the sheets and is housed in the cell casing. The positive electrode sheet is coated on its surfaces with a powdery positive electrode active material. The cathode sheet is coated on its surfaces with a powdery cathode active material. The positive and negative electrode sheets are laminated together with a separator sheet interposed between them, and wound into a cylindrical column. A conductive anode member (201) is mounted in the through hole by an insulating assembly (202). Anode tabs (107) connect the positive electrode sheet at an opposite end of the electrode unit to the positive electrode member. Cathode tabs connect the cathode sheet at an opposite end of the electrode unit to the cell casing. The anode sheet is mainly made of aluminum. The powdery anode active material includes lithium and manganese as indispensable constituent. The conductive anode member is made of an aluminum alloy mixed with manganese. INDEPENDENT CLAIMS are included for the following:    (a) a method of manufacturing the inventive spinel-type LiMn secondary cell;and    (b) a motor-driven mobile vehicle comprising the inventive spinel-type LiMn secondary cell, a cathode terminal held against and electrically connected to the cell casing of the LiMn secondary cell, a positive electrode terminal engaging and electrically connected to a bolt (203) of the LiMn secondary cell, a nut (204) tightening the anode terminal to the bolt, an electric motor energizable by electric energy supplied from the anode and cathode terminals, a vehicle body supporting at least the electric motor and the LiMn secondary cell, and a moving mechanism for moving the vehicle body with power produced by the electric motor.    DESCRIPTION OF DRAWING(S) - The figure shows a vertical cross-section view of an internal structure of the lithium-manganese secondary cell.    conductive cell casing (101)    electrode unit (102)    through hole (105)    anode tabs (107)    conductive positive electrode member (201)    insulating assembly (202)    bolt (203)    nut (204)    soft closing members (205, 206)    strong retaining members (207, 208)