a 'dead battery' = ('Brit') a 'flat battery' [=a battery that has no more electricity]
The operation was performed by a 'battery' of doctors.
He was found guilty of 'battery'.
(..) But, Gerry, I still don't know where you are. Well, go and find out what he needs. You're gonna want to take this. Take it. Your battery is dead. We made contact with Cardiff Airport, Wales. Your people directed us. There is W.H.O. research facility nearby, (..)2013 World War Z