battery

ot noun

1. An array of similar things. Schoolchildren take a battery of standard tests to measure their progress.
2. A device used to power electric devices, consisting of a set of electrically connected electrochemical or, archaically, electrostatic cells. A single such cell when used by itself.
3. The infliction of unlawful physical violence on a person, legally distinguished from assault, which includes the threat of impending violence.
4. A coordinated group of artillery weapons.