italianub wrote:Yeah I agree about the coffee... but unfortunately I am not the boss when it comes to that (I don't even drink coffee!) so I have to appease the better half hahaha.
Well, the physics says you may not be able to do it. Your battery holds so much energy, and it takes so much to make hot water. The inverter can only pass so much energy through it at a time.
Bruce Osborn, on this forum, built a humungous electrical system that he says was motivated by the desire to heat a mug of water. (Please correct me if I remember that wrong, Bruce.) But that's his hobby and there is a considerable amount of space devoted to batteries and the electronics necessary to keep them happy.
Edit--(After a cup of coffee): OK, I do see a 600 watt coffee maker on the market. No idea how good that is, and it is the lowest wattage of the coffee makers I've seen. Most are around 1300 watts. My guess is your wife may be disappointed.
So, keep in mind a 600 watt inverter will take a 50 amp input from the 12 volt battery. That will require some hefty wire (depending on the distance from the battery). You'll need to size the fuse box and other components with that in mind.
Tom