(ZA9206457-A)      In electrochemical cell charge indicator comprises two electrical contacts and an electrochemically generated display connected. Display comprises an electrochemical cell that may be permanently connected to a main cell in a parallel configuration via the contacts. Condition of the main cell may therefore be continuously displayed on the indicator    (US5250905-A)      A combination comprises a battery and a battery condition indicator. The indicator comprises an electrochemical cell that is permanently, electrically connected in parallel to the battery, with one of the electrodes being visible. The condition of the battery may be judged by observing changes in the visible electrode. Pref. the cell has an impedance at least 100 (1000) times that of the battery.    ADVANTAGE -   Provides an accurate determination of the useful life remaining in the battery.    (US5339024-A)      Indicator comprises an anode active layer, a cathode active layer and an electrolyte layer contacting (part of) anode and cathode active layers. Indicator is geometrically designed to provide a predetermined selective discharge pattern. Discharge begins at a region of anode or cathode active layer and continues towards remote regions.    Pref. (part of) the cathode and anode active layers are laterally spaced or portions esp. overlap.    USE/ADVANTAGE -   Visually indicates condition or state of charge of cell. Continuous display. Unaffected by geometry.    (US5355089-A)      Combination of electrochemical cell and cell condition indicator is claimed, the indicator having moisture-sensitive component(s). The cell comprises a casing, a negative terminal and a positive terminal. The indicator comprises a cell having anode layer, cathode layer and electrolyte. The indicator is located adjacent the outside surface of the casing. The combination further comprises a moisture barrier covering the indicator cell. At least one of the anode and cathode of the indicator cell provides visually discernable indication of state of electrochemical cell.    ADVANTAGE -   Water-vapour is prevented from penetrating and interfering with proper function of indicator.    (JP6511106-W)      Electrochemical power source having positive and negative terminals, pref. a battery, includes a condition indicator with a display comprising a cell connected in parallel with the power source. Pref. the indicator cell has a thickness of less than 100 mils and is attached to the external surface of the power source container.    ADVANTAGE -   Electrochemical device provides an accurate and permanent display of the state of the power source (battery) without risk of premature discharge.    (US5396177-A)      An electrochemical cell having an electrochemically stimulated indicator with a thickness less than 2.5 mm attached to the side of the cell and corrected across the cell electrodes. This gives a visible of cell condition when it is discharged.    The display device is made from layers of polymeric film enclosing an anode active layer of zinc and an active layer of Co02, Ni02, and lambda Mn02. A lithium salt is used as the electrolyte.    USE/ADVANTAGE -   To monitor the conditions of small batteries esp. of the 'AA' size. A compact device giving a low cost indication of cell condition.    (EP605599-B1)      Electrochemical power source having positive and negative terminals, pref. a battery, includes a condition indicator with a display comprising a cell connected in parallel with the power source. Pref. the indicator cell has a thickness of less than 100 mils and is attached to the external surface of the power source container.    ADVANTAGE -   Electrochemical device provides an accurate and permanent display of the state of the power source (battery) without risk of premature discharge.