National Battery Day is today (Feb 18.), and I dare you to watch this classic Eveready commercial from 1977 in which Robert Conrad dares you to knock a battery off his shoulder.

Oh, he’s a badass, all right, with his punching bag and his aggressive eye contact, and the way he refers to batteries as a “power system” while wielding a heavy calculator and cassette player.

Eveready battery commercial featuring Robert Conrad (1977)