Charger unit (4)

I believe the answer is:

volt

(Other definitions for volt that I've seen before include "Unit of electric potential difference" , "Unit of electrical potential" , "Electrical unit of measurement" , "Unit of electric force" , "SI unit of electromotive force" .)

I've seen this clue in The Wall Street Journal.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.