Device That Stores Energy and Produces Electricity
Puzzle 1 of Energy Sources Hard Pack
Question is: Device That Stores Energy and Produces Electricity
and the answer is: BATTERY
Word Meaning:
BATTERY — (electricity, electronics, countable) A device used to power electric devices, consisting of one or more electrically connected electrochemical cells or (archaically) electrostatic cells.
Definitions from Wiktionary.