2010 Springdale 26BHS: When I plug into shore power (30amp) I wake up the next morning to overheated batteries that are smoking and putting out that wonderful smell. Here is some history: years ago I drove away from the house to leave and forgot to unplug my shore power pulling the cord out from the back of the trailer. I was able to reinstall the 3 wire cord to the back of the trailer (not directly connected to the converter because it is in the center of the trailer and the cord just hooks to a junction box in the rear). I am not sure if this is related to my battery problem or not. The trailer works fine if I disconnect the batteries when I am plugged into shore power but that is getting old. Do you think I hooked up the wires incorrectly or has my converter gone bad?Thanks for any help!

While it is possible that may have hooked up the wires wrong (e.g. by swapping the hot and neutral or some such), that could not be the source of this problem. Either the converter is putting out too high of a voltage, or there was something wrong with the battery such as a shorted cell or lack of electrolyte. (Even if the batteries were in OK shape before, they are certainly not better off for the treatment they've received!)

That is what I thought. I have been through several batteries so I do not think the battery is the issue. I guess its time to replace the converter..... Thank you.

Ir they are smoking, I bet they aren't working very good while dry camping over night either. It seems you would tend to your batteries, test them or maintenance them.And if you don't have a voltmeter, get one.What does the battery meter read when they are connected,....does it show over chargimg. Those meters are good for something.

That's why they are in a vented storage area!Glad you are safe.

Since no one mentioned, I must ask, you did check the water level in the batteries, didn’t you? Smoking batteries can be very dangerous. Fire is the next step.....

Smoking Batteries | Good Sam Community

MEXICOWANDERER
Explorer
Mar 18, 2018
How adept at troubleshooting and what kind of testers do you own?
Old-Biscuit
Explorer III
Mar 18, 2018
Simple solution.......get rid of those damaged batteries---they are toast
Buy new ones (mark all cables before removing bad batteries---POS/NEG)

Before installing new batteries test converter

With rig plugged into shore power check converter DC Output Voltage...either right at converter or on Battery POS cable
DC Voltage should be 13.2V DC MINIMUM
Ed_Gee
Explorer II
Mar 18, 2018
DutchmenSport wrote:
Simple test? Take the battery off the camper. Put it in the garage (or somewhere else), and put a portable charger on it that will shut off once the battery is fully charged. If no smoke, 1) you know the battery is still good. Let it sit for a couple days to see if it still holds a charge. If OK, then 2) you know the system in your camper is over charging and your battery is not damaged. 3) take appropriate action regardless of the outcome.

I submit that if a battery has smoked....repeatedly I might add, then it is certainly not good anymore.
time2roll
Nomad
Mar 18, 2018
Disconnect the battery then check the voltage of the converter when plugged in. s/b 13.6 volts. Post the results.

Replace the batteries regardless.
DutchmenSport
Explorer
Mar 18, 2018
Ed_Gee wrote:
DutchmenSport wrote:
Simple test? Take the battery off the camper. Put it in the garage (or somewhere else), and put a portable charger on it that will shut off once the battery is fully charged. If no smoke, 1) you know the battery is still good. Let it sit for a couple days to see if it still holds a charge. If OK, then 2) you know the system in your camper is over charging and your battery is not damaged. 3) take appropriate action regardless of the outcome.

I submit that if a battery has smoked....repeatedly I might add, then it is certainly not good anymore.

Probably right, there!
Tocwby
Explorer
Mar 18, 2018
Currently, when I plug in, I disconnect my batteries so they do not smoke or overheat. The Trailer works perfectly and no issues when the batteries are disconnected. I only hook the batteries back up for travel between destinations.

It is the original WFCO converter that was original equipment as I have owned this since new. I am very familier with 12 volt vehicle systems so I know my way around a battery, my issue is the 120V system and the converter.

I will test the circuit with a fluke and verify what the output of the converter is at the battery. If it is over 14v means it is overcharging?

Thanks all!
Ed_Gee
Explorer II
Mar 18, 2018
I wish the original poster would confirm that he has checked the water level in that battery or not!!
westend
Explorer
Mar 18, 2018
You will need to know what state of charge the batteries have. You will need to know the voltage set points of the multi-state charger you have. 14V may be the absorption set point.
If the batteries have a full charge, the converter should not output more than 13.6V. It is unlikely you have a 120V problem as the converter is outputting some charge current. They typically fail open or not outputting any charge even though 120V power is present. A converter failing in the 120V power circuit would likely trip a breaker.

My internet diagnosis is that you have a failing battery or wires connected incorrectly. It is possible to have larger DCV with a failing converter but it is rare.
Tocwby
Explorer
Mar 18, 2018
Ed_Gee wrote:
I wish the original poster would confirm that he has checked the water level in that battery or not!!

I am the original poster. they are non service deep cycle batteries. I have replaced them several times over the last few years that this has been happening.
time2roll
Nomad
Mar 19, 2018
If the WFCO holds 14.4 volts into a charged battery more than 15 minutes or into a low battery more than 4 hours the WFCO is defective. This assumes the battery is good.

My WFCO eventually stuck in boost mode (14.4 volts) and was replaced.

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