For those who would like to know, rather than worrying about the internals I will just give an update on the wheel and my experience so far.
I'm on my 4/5th charge and I am on 400km, it has been great fun so far. This is my first wheel but its defiantly not going to be my last.! I'm Hooked! I see no better way of getting around the city. The Tesla has awesome speed and handling for what I need and for where I live right now, having that extra battery has defiantly not made me ever worry about range either. I will keep you posted on the battery but I'm not too worried. I keep a good eye on it while charging and if it catches fire while riding, I'm not too worried about.