If you use the battery sparingly, for lights, water pressure, and a radio for example, it can be charged by the solar panels daily. This is ideal, because constantly recharging the battery, never letting it get low, will keep it in the best condition. Travel trailers have capabilities for 12 volt lighting, so buy extra 12 volt light bulbs. Of course, a generator and fuel, especially a portable generator with the extended run kit, will greatly improve your standard of living. I regret there is no space to give you my specific cautions and recommendations concerning generators here, but I have enclosed a letter on my research and conclusions about generators along with this newsletter.
Trailers have two holding tanks for water waste.
One is called black water, which is for sewage out of the toilet, and the other is called gray water, which is for used water from the shower and sinks. While the best option for sewage from your trailer is an existing septic system, if this is not an option, then it is possible to make an expedient septic tank. An expedient septic system can be set up if you have fairly sandy soil nearby. First, dig a hole that can hold a 30 to 50 gallon garbage can, and then dig a couple of feet deeper. Add some rocks, like round river rocks, an inch or less in size.