(EP966768-A1)      The battery has a number of electrodes (2) in a chamber (3) filled with electrolyte (4). At least one of the electrodes is a non-soluble secondary electrode which has a separator (7) by which at least its structural and/or shape change is related to the fall of mechanically unstable discharge products is reduced during cyclical charging and discharging.    At least the non-soluble electrodes have, in addition, an electrochemically active layer with a surface profile or relief with a number of recesses or ridges by which the structural or shape change is further reduced.    ADVANTAGE -   Allows inexpensive recharging.    (DE19708209-C2)      The battery has a number of electrodes (2) in a chamber (3) filled with electrolyte (4). At least one of the electrodes is a non-soluble secondary electrode which has a separator (7) by which at least its structural and/or shape change is related to the fall of mechanically unstable discharge products is reduced during cyclical charging and discharging.    At least the non-soluble electrodes have, in addition, an electrochemically active layer with a surface profile or relief with a number of recesses or ridges by which the structural or shape change is further reduced.    ADVANTAGE -   Allows inexpensive recharging.    (CN1253666-A)      The battery has a number of electrodes (2) in a chamber (3) filled with electrolyte (4). At least one of the electrodes is a non-soluble secondary electrode which has a separator (7) by which at least its structural and/or shape change is related to the fall of mechanically unstable discharge products is reduced during cyclical charging and discharging.    At least the non-soluble electrodes have, in addition, an electrochemically active layer with a surface profile or relief with a number of recesses or ridges by which the structural or shape change is further reduced.    ADVANTAGE -   Allows inexpensive recharging.    (US6207316-B1)      The battery has a number of electrodes (2) in a chamber (3) filled with electrolyte (4). At least one of the electrodes is a non-soluble secondary electrode which has a separator (7) by which at least its structural and/or shape change is related to the fall of mechanically unstable discharge products is reduced during cyclical charging and discharging.    At least the non-soluble electrodes have, in addition, an electrochemically active layer with a surface profile or relief with a number of recesses or ridges by which the structural or shape change is further reduced.    ADVANTAGE -   Allows inexpensive recharging.