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'.
(..) - No. - - Inner hatch sealed. This is just an ordinary prod, like a cattle prod. It's got a portable battery. It's insulated all the way here, all the way up to here. Just make damn sure nobody puts their hand on the end of it. It shouldn't damage (..)1979 Alien