FCL1

DEFINITIONS
Activated Stand Life: The period of time, at a specified temperature, that a battery can be
stored in the charged condition before its capacity falls below a specified level.
Activation: The process of making a reserve battery functional, either by introducing an electrolyte, by immersing the battery into an electrolyte, or by other means.
Activation Polarization: Polarization resulting from the charge-transfer step of the electrode
reaction.
Active Cell or Battery: A cell or battery containing all components and in a charged state ready
for discharge (as distinct from a Reserve Cell or Battery).
Active Material: The material in the electrodes of a cell or battery that takes part in the electrochemical reactions of charge or discharge.
Adsorption : The taking up or retention of one material or medium by another by chemical or
molecular action.
Aging: Permanent loss of capacity due either to repeated use or to passage of time.
Ambient Temperature: The average temperature of the surroundings.
Ampere-Hour Capacity (also Amp-Hour Capacity): The quantity of electricity measured in
ampere-hours (Ah) that may be delivered by a cell or battery under specified conditions.
Ampere-Hour Efficiency (also Amp-Hour Efficiency): The ratio of the output of a secondary
cell or battery measured in ampere-hours, to the input required to restore the initial state of
charge, under specified conditions (also coulombic efficiency).
Anion: Ion in the electrolyte carrying a negative charge.