Out of battery juice

DEAD

Think of how a phone might feel when it can’t turn on—this word also describes something lifeless or completely drained.

"Out of battery juice" is a playful way to say a device has no power left. The word "juice" here is slang for energy or charge, so when it’s gone, the battery is "dead"—a common term for something that’s completely drained. The clue uses simple word association without hidden tricks, making "DEAD" the straightforward answer.