Brownout - A steady state RMS voltage under nominal by relatively constant percentage.
Voltage (float) - DC voltage applied to the battery to maintain its charge level. This voltage depends on the type of battery, the number of cells and the manufacturer's recommendations.
Pulse Current - A periodic current drain of higher than normal drain rates.
Fuse - Device used for cutting off an electrical current in the event of an abusive condition.
Load (non-linear) - Load (generally with a switched-mode power supply) generating major harmonic currents. Current wave form is different from voltage wave form. Ohm's law is not applicable. It can be used only with each harmonic.
Microsecond - 1,000,000th of a second (mS).
MTTR (Mean Time To Repair) - Mathematical calculation (or statistical average if available) of the time required to repair a device.