TECHNOLOGY FOCUS - ELECTRICAL POWER AND ENERGY - Preferred Discharge Capacity Analysis: In the analysis of the curve -(a) if the pulse amplitude is at most 5 mA and the time interval is less than 0.68 seconds, then(1) if the slope is negative or decreasing, the cell is at the beginning of its life and its depth of discharge is less than 25%;(2) if the slope of the curve is zero, the cell is in the middle of its life and its depth of discharge is 25-50%; and(3) if the slope of the curve is positive or increasing, the cell is at the end of its life and its depth of discharge is more than 50%; and(b) if the pulse amplitude is more than 5 mA and the time interval is less than 0.68 seconds, then(1) at the beginning of its life, the cell has a depth of discharge of less than 20%;(2) in the middle of its life with a pulse length of 0.02 seconds, the cell has a depth of discharge of 20-60%, and with a pulse length of 0.2 seconds, the depth of discharge is 18-23%; and(3) at the end of its life with a pulse length of 0.02%, the cell has a depth of discharge is more than 60%, and with a pulse length of 0.2 seconds, the depth of discharge is more than 25%.Preferred Electrochemical Cell: The cell comprises a solid cathode including 80-99 wt.% of one of silver-vanadium oxide, copper-silver-vanadium oxide, manganese dioxide, cobalt oxide, nickel oxide, fluorocarbon, copper oxide, copper sulphide, iron (di)sulphide, titanium disulphide, copper-vanadium oxide and mixtures, preferably carbon, 1-5 wt.% of a fluororesin binder and 0-3 wt.% of a conductive additive selected from carbon, graphite powder, acetylene black, titanium powder, aluminium powder, nickel powder and stainless steel powder, preferably carbon. The cathode is in contact with a titanium current collector.The non-aqueous electrolyte comprises an alkali metal salt dissolved in a non-aqueous solvent, preferably 1.0 M lithium borofluoride in gamma-butyrolactone.The anode comprises a lithium anode active material in electrical contact with a nickel current collector.