být na baterii
"He doesn't have to wind up his watch because it is run by a battery." (On nemusí natahovat své hodinky, protože jsou na baterii/napájené baterií.)
být napájený baterií
"He doesn't have to wind up his watch because it is run by a battery." (On nemusí natahovat své hodinky, protože jsou na baterii/napájené baterií.)