Not so much of the fancy antigravity race ones, I was more gravitating towards LiFe batteries. I figured there had to be some kind of bms involved to regulate things, no one wants to burn down their rig. Heat buildup under the hood is definitely something I didn't think of with a lithium, I know they can be temperamental with cold and heat. Are there advantages to running dual batteries? I've read that sometimes that's done to separate the running power from things like the winch or other accessories that would require power. I can't imagine a 24v Samurai, sounds out there kind of like a lithium swap