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'.
(..) We must get off this ship before it’s too late. - He seems to be all right. - Leave him, or we’ll never make it. His fate will be the same as ours. Prepare for attack! All batteries, fire! Fire! Elevator’s not working. R, activate elevator . - Reverse stabilizers. - Reversing stabilizers. (..)2005 Star Wars: Episode III - Revenge of the Sith