When I was kid, my dad had a voltmeter that I loved to play with to check batteries and light bulbs. I'd been told by JH that they were useful (of course he has one in his magic bag of tools), and I toyed with the idea of getting one, when lo and behold, when we had family over, we had an occasion to get one.
RR and PR were fixing the kid's electric motor, and RR mentioned a voltmeter would be useful. Say no more. PR and I ran over to Aubuchon and got one (actually, it's a multimeter), and we used it extensively over the course of the weekend. The kids got a huge kick out of it, too, so it was a win-win situation. I love when that happens.
We now know which batteries still have charge in them, which as any kid will tell you, is extremely useful information. Thanks for reading.