Battery chargers are devices for charging rechargeable batteries

Battery and fuel cell test equipment consists of specialized test stations, stands or systems, monitors and component modules for performance or endurance testing.

Power supplies are devices that produce AC or DC power.

DC to AC converter chips transfer a DC input into AC power by using switching, inversion, or other technology

AC to DC converter chips transfer an AC input into DC power using switching (MOSFET, IGBT) or rectification (diodes, Schottky diodes

Power rectifiers are electrical devices that convert alternating current (AC) to direct current (DC).

DC to AC inverters are used for converting direct current (DC) into alternating current (AC).