I know we're getting a little off topic again, but I thought I'd mention this as it relates to safety for your electronic equipment. Unless the inverter is a pure sine wave inverter do not run sensitive expensive electronic equipment on AC from it. In the past I used cheaper inverters in my camper with laptop computers. I had two failures on the same laptop in the first year. That was when I started to research and found out that without a true sine wave inverter you can fry your more sensitive electronic equipment. It took a lot of searching but I found a universal auto voltage sensing DC power supply that came with interchangeable power tips for all the major brand laptop computers. If you use a laptop or iPad on board stick to a DC power source unless you have a pure sine wave inverter. Even rechargeable shavers can be ruined if not using a pure sine wave inverter. I probably fried one of those in the camper as well. At the time I had no idea all inverters are not created equal.