Swampy K2 evaporative cooler

I have a old six-pac tc I have set up exclusively for dry camping in the desert. I live in southern nm and use it for camping in nm and az. I am into desert gold mining. I put one of the turbokool units on my tc. They work really good provided the humidity is low i.e. Less than 12 percent. You can expect around a 20 degree temp drop from the outside air temp. Low amp draw 4.5 amps , I run mine off the load terminals on my charge controller. 2 - 100 watt panels and 30 amp controller. One very important thing , do not use tap or well water!!!!! The amount of mineralization in the water will have you replacing the filter / cooling media every week. I use a pump up 2.5 gallon bottle to supply water to the unit and only distilled water. Under ideal conditions it uses about 3 gallons a day. I only use it during the day.