The ammo can is a solid idea, wish I thought of that myself. That would raise the safety factor enough for me to give it a try once or twice as well. Still, covered outdoors area or similar. Agreed on having a healthy fear/respect for big cells, it’s wild how much power we can fit in a battery these days and even more so to watch it escape.

Nice trick but there’s a reason the charger is designed to not do what you’re getting it to do. Preventing explosions and such. I’d recommend looking up why/how the chemistries are different at low voltage so you can ride the line more safely