When one is young and inexperienced and hasn’t been bitten in the ass hard you ‘flick switches, jab buttons’ and don’t really cross check much. And when you eventually get some experience and get bitten a few times you being to ‘select switches, press buttons’ and triple check everything.
But you can’t teach experience…“Experience is a hard teacher because she gives the test first, the lesson afterward.”
Vernon Law
As a way of beating some experience into your students, maybe fail a battery or pack when they do that and make them stop and think about how they are operating?