Definition of “battery” - English Dictionary

“battery” in British English

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batterynoun

uk /ˈbæt.ər.i/ us /ˈbæt̬.ɚ.i/

battery noun (ELECTRICAL DEVICE)

A2 [ C ] a device that produces electricity to provide power for radios, cars, etc.:

a rechargeable battery
a battery-operated hairdryer
This alarm clock takes two medium-sized batteries.
I think the battery isdead/flat (= has lost its power).

More examples

battery noun (GUNS)

[ C ] a number of large guns and similar weapons operating together in the same place:

The shore battery opened fire.

batteryadjective [ before noun ]

uk /ˈbæt.ər.i/ us /ˈbæt̬.ɚ.i/ UK

(Definition of “battery” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“battery” in American English

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batterynoun

us /ˈbæt̬·ə·ri/

battery noun (ELECTRICAL DEVICE)

[ C ] a device that produces electricity to provide power for radios, cars, toys, etc.:

What size battery do you need for the alarm clock?

physics [ C ] A battery is also any device that produces electrical energy from chemical energy.

battery noun (LARGE NUMBER)

[ C ] a number of things of a similar type:

You have to pass a whole battery of tests to get into that school.

battery noun (CRIME)

[ U ] the crime of attacking and beating someone

(Definition of “battery” from the Cambridge Academic Content Dictionary © Cambridge University Press)

“battery” in Business English

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batterynoun [ C ]

uk /ˈbætəri/ us

a device that produces electricity to provide power for cars, radios, etc.:

charge/recharge a battery I need to recharge the batteries for my camera.
a rechargeable battery
a battery-powered vehicle
a battery of tests/questions, etc.

a large number of tests, questions, etc.:

Candidates have to undergo a battery of intelligence tests.

(Definition of “battery” from the Cambridge Business English Dictionary © Cambridge University Press)