“Batteries for brains?” crossword clue

Reveal the answer to see why it works and where this clue has appeared before.IQTESTS is the answer to the New York Times crossword clue “Batteries for brains?”. It was last seen in the puzzle of March 22, 2026, where it runs at 94 Down and fills 7 squares. It crosses 7 other entries in that grid — those are listed below and are the quickest way to confirm the letters you already have.