The Battery Open Circuit Voltage node defines a voltage source in the circuit that depends on the state-of-charge of a battery. In time-dependent simulations the state-of-charge is calculated by integrating the current passing through the circuit element, using the Battery cell capacity and Initial state-of-charge parameters.

Use the table in the Open Circuit Voltage section to define how the voltage depends on the state-of-charge.

The Temperature derivative of open circuit settings may be used to define a temperature-dependent open circuit voltage, and a reversible (entropic) heat source.