Battery cells - The interconnected battery elements that supply electrical power created by electrolytic reaction.
Thermistor - A temperature sensitive resistor, usually made from specially processed oxides.
End Voltage (also see Cutoff Voltage) - The prescribed voltage at which the discharge (or charge, if end-of-charge voltage) of a battery may be considered complete.
Constant Current Discharge - A battery discharge regime whereby the current drawn during the discharge remains constant.
Polarity - In electricity, the condition of being positive or negative.
Midpoint Voltage - The voltage of a battery midway in the discharge between the start of the discharge and the end voltage.
Thevenin generator - For a given load, it is possible to consider the power supply as a voltage generator, referred to as a Thevenin generator, made up of a perfect voltage Uo generator, in series with an internal impedance Zs - n Uo is the voltage measured across the load terminals, given that the load is to be disconnected (load terminals forming an open circuit), n Zs is the equivalent impedance as seen from the load terminals (again considered an open circuit), obtained by short-circuiting the upstream voltage generator(s).