Battery testing with the calculated discharge curve method

The calculated discharge curve method is based on thermodynamically reversible work: the product of the open-circuit voltage initial current and time i.e. the sum of useful energy and energy losses. A calculated discharge curve is based on the constant step change of the battery voltage in correspondence with a cardinal number set. The essential solution is the transformation of the discharge data: voltage vs. time into time vs. voltage using Basic Equation (three-point operators: power of internal resistance and time) which are valid for all battery electrochemical systems battery designs and discharge conditions. The mono and multi-cell battery operating conditions are: (1) the four discharge modes (constant loads: resistor current voltage and power); (2) two load regimes: self-driving and device-driving (galvanostat potentiostat) or battery connection (serial parallel combine); and (3) continual and intermittent discharge. The next battery characteristics are introduced: discharge time as time intervals and subintervals standard and average characteristcs real and virtual discharges and real and virtal cells and batteries.