(WO9424718-A1)      Cell comprises: container; central cylindrical Zn negative electrode; aq. electrolyte; annular MnO2 positive electrode; electrode separator; closure member; and terminals to each electrode. The aq. electrolyte contains alkali metal hydroxide(s); H2SO4, H3BO4 and/or H3PO4; or ZnCl2, NH4Cl, NaCl and/or KCl.    The ratio of theoretical discharge capacity of the Zn electrode to the theoretical one-electron discharge capacity of the MnO2 electrode (the electrode balance) is 60-120% pref. 70-100%. The dimensions of the MnO2 electrode are maintained by interference with the container, separator and closure member.    In an embodiment, the cell is a button cell.    ADVANTAGE -   The mechanical integrity of the MnO2 electrode can be maintained during cycling without need for physical confinement of the electrode or large amts. of binder, so that the cells have improved cycle life and drain rate.    (JP8508847-W)      Cell comprises: container; central cylindrical Zn negative electrode; aq. electrolyte; annular MnO2 positive electrode; electrode separator; closure member; and terminals to each electrode. The aq. electrolyte contains alkali metal hydroxide(s); H2SO4, H3BO4 and/or H3PO4; or ZnCl2, NH4Cl, NaCl and/or KCl.    The ratio of theoretical discharge capacity of the Zn electrode to the theoretical one-electron discharge capacity of the MnO2 electrode (the electrode balance) is 60-120% pref. 70-100%. The dimensions of the MnO2 electrode are maintained by interference with the container, separator and closure member.    In an embodiment, the cell is a button cell.    ADVANTAGE -   The mechanical integrity of the MnO2 electrode can be maintained during cycling without need for physical confinement of the electrode or large amts. of binder, so that the cells have improved cycle life and drain rate.    (EP695465-B1)      Cell comprises: container; central cylindrical Zn negative electrode; aq. electrolyte; annular MnO2 positive electrode; electrode separator; closure member; and terminals to each electrode. The aq. electrolyte contains alkali metal hydroxide(s); H2SO4, H3BO4 and/or H3PO4; or ZnCl2, NH4Cl, NaCl and/or KCl.    The ratio of theoretical discharge capacity of the Zn electrode to the theoretical one-electron discharge capacity of the MnO2 electrode (the electrode balance) is 60-120% pref. 70-100%. The dimensions of the MnO2 electrode are maintained by interference with the container, separator and closure member.    In an embodiment, the cell is a button cell.    ADVANTAGE -   The mechanical integrity of the MnO2 electrode can be maintained during cycling without need for physical confinement of the electrode or large amts. of binder, so that the cells have improved cycle life and drain rate.    (RU2126193-C1)      Cell comprises: container; central cylindrical Zn negative electrode; aq. electrolyte; annular MnO2 positive electrode; electrode separator; closure member; and terminals to each electrode. The aq. electrolyte contains alkali metal hydroxide(s); H2SO4, H3BO4 and/or H3PO4; or ZnCl2, NH4Cl, NaCl and/or KCl.    The ratio of theoretical discharge capacity of the Zn electrode to the theoretical one-electron discharge capacity of the MnO2 electrode (the electrode balance) is 60-120% pref. 70-100%. The dimensions of the MnO2 electrode are maintained by interference with the container, separator and closure member.    In an embodiment, the cell is a button cell.    ADVANTAGE -   The mechanical integrity of the MnO2 electrode can be maintained during cycling without need for physical confinement of the electrode or large amts. of binder, so that the cells have improved cycle life and drain rate.