hay, with full anticipation, got me at the big C a kettle with 12 volts indication and then test the afterwards in my 45minutiger break, want something, which almost caused itself into a catastrophe. First I jumped out the fuse for the 12V can so that I could no longer charge my cell phone and could of course not use the cigarette lighter. Then a colleague has an adaptor for 24V to 12 volts (MAN in the foot area on the side is noc hmal a smaller hole for 12V) borrowed and after 25 minutes the super-told kettle had finally brought o,75 liters of water to the boil, then I burned myself at the adaptor, because this had become too hot. Now my question, how do you cook water on the way, my next thought would be GAS :/ but which device is recommended, I want something simple.