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Battery. A battery is a hardware component that supplies power to a device, enabling that device to work without a power cord. Batteries are often capable of powering a laptop computer for several hours depending on how much power it requires.ou are here: Dictionary B-Definitions. A battery is a hardware component that supplies power to a device, enabling that device to work without a power cord.
The noun BATTERY has 7 senses: 1. group of guns or missile launchers operated together at one place. 2. a device that produces electricity; may have several primary or secondary cells arranged in parallel or series. 3. a collection of related things intended for use together.4. a unit composed of the pitcher and catcher.. a series of stamps operated in one mortar for crushing ores. 6. the heavy fire of artillery to saturate an area rather than hit a specific target. 7. an assault in which the assailant makes physical contact. Familiarity information: BATTERY used as a noun is common.