Right, but that's not exactly electrocution, that's just burning. Through a metal, 12V will be more than enough to create a current that makes the conductor very hot, but through a human it likely will not be able to cause any damage whatsoever.

Could that be used as a form of torture? Absolutely, not disputing that. But for electrocution, a car battery would not do, and for burning a blowtorch would be more effective.

Yes, if you run hundreds of amps through metal it gets hot, but that's not electrocution which is what the person you're replying to is talking about. You can't really electrocute someone with less than about 50V because the human body has too much resistance. You can try it yourself; lick 2 fingers and touch both poles of a car battery; you won't feel anything because your skin has too much resistance for 12V to meaningfuly pass through. The only danger a 12V battery poses is if you short it with a piece of metal then that metal will get very hot and often hot enough to melt or explode both itself and/or the battery. But as far as torture goes a car battery is a very round about way to heat up a chunk of metal when you could just use a torch or something.

It's regular burn, not electrical one.

The gold ring being a great conductor likely didn't help the man.

Ahh yes that totally what everyone will think when talking about torturing someone with a car battery. This is like saying tires are dangerous because cars run people over. The guy above was simply informing people that (rightfully) would get the idea that the ran electrodes to his nipples and cooked him like a hot dog. Sure a car battery is dangerous if used dangerously.