Battery Tray

A contained unit with a base and walls for holding several cells or batteries.

Battery Cell

An electrochemical device composed of positive and negative plates, separator, and electrolyte which is capable of storing electrical energy.

Basic Insulation Level

A design voltage level for electrical apparatus that refers to a short duration (1.2 x 50 microsecond) crest voltage and is used to measure the ability of an insulation system to withstand high surge voltage.

Basic impulse level (BIL)

A reference impulse (voltage) insulation strength expressed in terms of the peak value of the withstand voltage of a standard impulse voltage wave. It is used to express the ability of electrical equipment such as transformers to withstand certain levels

Bandwidth

The data carrying capacity of a transmission path, measured in bits or bytes per second.