Originally Posted by Wally26RLS
I have a 2014 26RLS. When we bought it I didnt realize the parasite draw on the battery and ran it completely dead. Since then we have charged it and used it regularly. When we travel it is very slow to charge but when it is plugged into shore power it eventually comes to a full charge. Seems like when we use it though without shore power it immediately drops to 50% on the control panel. I brought the battery and had it tested and charged it tested fine. My question to you all is ...have you ever run your battery completely down and if so did you have similar problems with it?
There could be quite a few things causing your issue.
First off, for the trailer's built in meter to read with any kind of accuracy you need everything turned off. Otherwise you will get a voltage drop through the wiring as well as a voltage drop from the batteries internal resistance. My 2015's built in meter is actually fairly accurate as long as I have everything turned off.
So the first thing you need to do is figure out how much load is being applied to your batteries, both parasitic and when in use. For example on my trailer, if everything is turned off my parasitic draw is about 1/3 amp. If I turn on the refrig and water heater (both on propane) that draw increases to about 1 - 1.5 amps.
The best way to measure this stuff is to get a clamp on DC meter like this.
Alternatively, you could install a dedicated battery monitor like the Trimetric 2030-RV here:
home - Bogart Engineering
If you do not have a meter yet, I suggest going that route, as it is something that should be in everyones toolkit.
Once you can accurately measure current draw and voltage on your trailer, you can get to the bottom of your issue fairly fast.