Capacity - The total number of ampere-hours or watt-hours that can be withdrawn from a fully charged cell or battery under specified conditions of discharge.
Earthing system TT - Earthing system in which the neutral and the exposed conductive parts are directly earthed. The installation must be de-energized immediately in the event of an insulation fault.
Primary Battery - A battery which is not intended to be recharged and is discarded when the battery has delivered all of its electrical energy.
Tolerance in % - Limit for allowable variations for a given quantity, expressed as a percent of the rated value.
COS phi - A measure of the phase shift between the current wave and the voltage wave observed at the terminals of a load supplied with AC power at a given frequency.
Drain - The current withdrawn from a battery during discharge.
Switching Transients - Rapid voltage peak up to 20,000 volts with a duration of 10mS to 100mS.
