Dry camping with a trailer

If you are conservative with power use and have a single battery you can get by for 3 to 4 days.

You need to use flashlight and lanterns to keep from using the overhead lights. If the trailer is equipped with an inverter and microwave...only use the microwave for very short duration heating. No 30 minute cook times...1 to 3 minutes only.

The water pump, heater, refrigerator, TV and other appliances will be the biggest users of power. Make sure to use propane for the refrigerator.

Use paper plates and plastic utensils to save water and pump usage by not having to wash a lot of dishes. Take navy showers...look it up on google.

If needed, and your tow vehicle is wired properly you can plug into it to recharge the trailer battery by letting the engine run for an hour.

Adding additional batteries and or carry a small portable generator will make it less neccessary to conserve power.

Without a generator, about one day or so before batteries run down would be my guess.

Much depends on the weather and how long you plan on staying in one location. The other major factor is the number and condition of your batteries and holding tanks on your trailer. If you do not have to heat or cool the trailer, your demand on your batteries in much less. We have a 100 gallon fresh water tank and 80 gallon gray tank and 40 gallon black water holding tank. My wife and I can last a week withour refilling or dumping tanks. Additional people means less time in place.

Don't be worried about dry camping - that is what your trailer is made to do. Many of the nicest campgrounds are dry camping.

What kind of trailer? What is the duration of the "dry camping" you are asking about? A self contained trailer is designed to "dry camp" for a period of time, varying depending your specific equipment and abilities.