Gravimetric energy

If the battery capacity falls below the specified value for three consecutive charge and discharge cycles, the battery's lifespan is considered terminated. The number of charge and discharge cycles in which the battery last reached or exceeded the specified capacity value is then counted as the battery's cycle life.

Discharge multiplier is a measure of the speed of discharge, which refers to the value of the current required for a battery to discharge its rated capacity within a specified time period. (It is numerically equal to a multiple of the rated capacity of the battery, i.e., "discharge current/rated capacity of the battery = discharge multiplier", usually denoted by the letter C.) Similarly, the charging multiplier is a measure of the speed of charging, i.e., "charging current/rated battery capacity = charging multiplier.")

A charging state in which, under selected conditions, all available active materials do not significantly increase the capacity during charging.

The remaining capacity of a battery that can be discharged when the battery has been used for a period of time under specified conditions (such as discharge or storage) before continuing to discharge.

Electrode polarization accompanying electrochemical oxidation reactions.

Battery discharge current expressed in discharge rate (It), where 1ItA equals 1.5 ampere-hours per hour.