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'.
(..) - Come on, come on. Quickly! - Sherlock, dear. This taxi driver... Mrs Hudson, isn't it time for your evening soother? Get vehicles, get a helicopter. This phone battery won't last for ever. We'll just have a map reference, not a name. It's a start! Sherlock... Narrows it down (..)2010 TvShow: Sherlock Title: A Study in Pink Season: 1 Episode 1