Parasitic draw from fridge This is with the fridge

We keep ending up with a dead battery. It’s been quite a journey to figure out what is going on. It turns out that our charging cable from the tow vehicle had a blown fuse, so we were not charging as we drove. That is now fixed.  However the battery is still going dead after sitting for about  24 hours. The battery has been tested and pronounced good by the local auto parts store.  So, something else is also wrong, it appears.  

Hello Jeremy, it sounds like you have done a good job of troubleshooting your electrical drain issue!

+1 to OG, it does sound like the battery is toasted (I know you stated it was tested, but it can still happen). If it is a wet battery ( as in has the caps you can remove to check and top up with distilled water when needed), has it been maintained properly.

I know I probably don't need to ask but when troubleshooting everything has to be looked at and verified as to serviceability, especially the easiest things to check and verify.

So, sorry if I am asking a silly question as you didn't state it in your post. Is your battery a purpose-built deep cycle battery and not a deep cycle/starting battery designed for marine use...or even worse in this application, a starting battery for a vehicle?

I have asked this question before, and as they never came back to say or further troubleshoot their problem maybe that was their problem all along. We will never know. :-)

Good luck and we look forward to a successful conclusion to your electrical issue...or an update if further issues are discovered.

Andy

Hmm, just thinking before posting...do you have a battery disconnect switch for when your TT is stored? That can save your battery from a premature end (due to these same parasitic loads). For long storage times it is best to remove the battery and charge regularly so it is ready for the following camping season.

     

Agreed, podwerkz.

Leaving the TT plugged in if possible, a solar panel to maintain the battery is also a great way if you plugging it in isn't possible.

The battery cut off switch is one that I think they are now installing from factory as the 192 we are waiting for has one in all the demonstration videos I've seen.

It is all dependent on the condition, construction and Maintenance of the battery as to its longevity...usually. Sometimes though, things can fail just because they were junk to begin with.

Andy

The only thing that I can think of at this point is something you are already watching, and that is the serviceability if your battery.

A fully charged battery should be about 12.7 12.8 volts (give or take) when it is fully charged and then rested to get a good reading. Your battery is indicating a pretty deep discharge at 12.3...but you are all over it...12.2 volts indicates it is at 50% discharge, the normal maximum you want to take a deep cycle battery down to before recharging.

So, there you go...I would change that battery out as you head put of town so it won't be a problem when you stop for the night (or in the night, possibly).

Have a great and safe trip!

Andy