Battery Drain

Originally posted by Tibof The fridge was not running on battery.  As noted, it was on shore power.  Then, when on propane, all was well.  The kids used that mode out for last week and all was good.  Now to return to a more complete diagnosis in the week ahead.  As for ignoring an unhelpful post, check out the thread from the beginning.  I tried to move on politely to the genuine comments of others.  But as you can see, sometimes that does not work.

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Originally posted by Tibof The problem is refrigerator related (converter is new PD replacement).  When on shore power, the problem occurred.  On propane, the batteries come up and stay up.  Out for a week with no issues as long was fridge is on propane.

Originally posted by Tibof Batteries seem to test good.  But quickly go down.  I know that could mean a large variety of issues, but I would like to hear any ideas out there.  Perhaps there's something I have not addressed.  Batteries run through an on/off switch that I'll hafta tear apart.  Otherwise I can't think of anything.  So if you have an idea, throw it my way and I'll say thanks in advance.

I know that to you, your post seems rather obvious. However, after reading all the posts, I agree that to someone not familiar with your setup and situation, it is rather vague.

"Batteries seem to test good"

Seem to? How are you testing? Are you using a voltmeter, specific gravity tester, taking them somewhere for a load test?

"I know that it could mean a large variety of issues . . . ."

Yes, that is true. What have you checked and have you been able to rule anything out?

"Batteries run through an on/off switch that I'll hafta tear apart."

Battery cut-off switches, especially the cheap ones have been known to go bad. This is definitely something to check. The one I bought is a better quality one, https://smile.amazon.com/gp/product/B005DUUL9W/ which has performed very well since I bought it in 2016.

What is the situation that makes you say they go down quickly? What battery setup do you have? Is it a single group 24 battery or dual 6V batteries connected in series? Is the converter charging the battery/batteries properly? Is this discharge while it is sitting unused? Have you taken into account things like the antenna booster (make sure it is off unless being used by you), the CO/LP detector (can't be disconnected), the radio? The refrigerator does have power going to it as does the thermostat. All these individually might not draw much power, but together, it can add up. If the trailer is sitting unplugged, these continue to drain the battery if not disconnected. Pb-Acid batteries also self-discharge.

This web site might be helpful:  https://batteryuniversity.com/index.php/learn/article/elevating_self_discharge

You say the problem is fridge related.  In my opinion, the fridge should never be run on battery power.  It uses way too much juice and will run just about any battery down in hours.  A/C or propane is the only way to go.

Beyond that, if you don't find someone's reply helpful, speaking just for myself, I'd just as soon you ignored it.

TT

Yep...when the question is so vague that we have to ask a lot of questions... or make a lot of random guesses. 

We aren't mind readers. Well, not me anyway.