Battery draining

[mokes]

We just bought a 2010 Ameri-lite 24BH travel trailer. We have used it once. During that trip, our battery was drained within 2 hours. We went back to the dealer, who gave us a new battery. We decided to try the battery out before we went camping. The battery was fully charged when we got home from the dealer. Within a week, it was down to 3/4 full. We had NOTHING on - no lights, frig, heater, etc. I just went out and turned on one overhead light and the outside light. Within 1 1/2 hours, the battery has drained. Any thoughts? We are very frustrated..

[mfa]

...The battery was fully charged when we got home from the dealer. Within a week, it was down to 3/4 full. We had NOTHING on - no lights, frig, heater, etc....

If it is like most RVs, you have a propane detector that draws current all the time. They are usually located near floor level somewhere. They can drain a battery in 2-3 weeks. Many RVs have a 12-volt disconnect switch to kill all 12-volt power so that the battery won't drain.