RV Battery Drain Tip
There are several things in an RV that will continue to slowly drain the coach battery even when you think everything is turned off. One of the leading culprits for battery drain is the LP gas leak detector. On a lot of RVs this is designed to operate all of the time. There are other items that we overlook sometimes like the power booster on the TV antenna, or a clock that operates off of 12 Volts. If your RV is not equipped with a battery disconnect switch you can purchase a device that installs right on the battery post. When you're not using the RV you simply lift a lever up and it disconnects all 12 Volt power going to the RV.
This tip contributed by Mark Polk at RV Education 101
Another place to look for a battery drain is the hi-humidity switch in your refrigerator is so equipped.