Parallel - Term used to describe the interconnection of cells or batteries in which all the like terminals are connected together. Results in increased capacity.
MTBF (Mean Time Between Failures) - Mathematical calculation of the duration of normal operation of a repairable device between failures. The product, expressed in hours, is an indication on the reliability of the device.
Battery cells - The interconnected battery elements that supply electrical power created by electrolytic reaction.
Earthing system TN - Earthing system in which the exposed conductive parts are interconnected and connected to the neutral. The neutral is connected to the earth. The installation must be de-energized immediately in the event of an insulation fault.
Current Drain - The current withdrawn from a battery during discharge.
Cell - The basic electrochemical unit used to generate or store electrical energy.
Brownout - A steady state RMS voltage under nominal by relatively constant percentage.
