0 a device that produces electricity to provide power for radios, cars, etc. -- 電池,電芯
2 a number of large guns and similar weapons operating together in the same place -- 炮組,排炮
3 → assault and battery -- 暴力行為,毆打
4 using a system of producing a large number of eggs cheaply by keeping a lot of chickens in rows of small cages (= boxes made of wire) -- 層架式養雞的
You'll run the battery down if you leave your car lights on.
Is it all right to leave/put the battery on charge overnight?
I left my car lights on all night and now the battery is flat.
The battery should prevent the computer system from going down in the event of a power cut.