Photoconductive cells are light-sensitive resistors, in which resistance decreases with an increase in light intensity when illuminated

Rechargeable batteries or secondary batteries contain active materials that can be regenerated by charging.

Industrial batteries translate chemical energy into electricity.

Battery packs are constructed from two or more individual cells or batteries

Ion selective electrodes measure the potential of a specific ion in solution.

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

Load cells are transducers for force and load measurement, often with mounting packaging.