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Old 07-19-2014, 09:23 PM   #1
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Battery overcharge

Just noticed the sulfur smell from our 295rst te. Opened the cover, found two cells dry, added water, but still smell sulfur
Where is the battery charger? And is there a fuse, circuit I can shut off while I'm plugged in to 50amps?
Thanks
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Old 07-19-2014, 09:52 PM   #2
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Not sure about your specific unit, but wanted to let you know that the portion of the plates that become uncovered, are now dead so your battery will not be able to function at design spec. I would suggest testing the output of the converter, when you locate it, to make sure it is operating within spec.
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Old 07-19-2014, 10:02 PM   #3
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Sounds like converter is putting out above 14 volts should be closer to 13.8
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Old 07-19-2014, 10:27 PM   #4
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There is a 10amp fuse in the area of the battery, is that for the charger? Yes "still kick,n" I think the battery may need to be replaced but I'm thinking the charger is not backing off , and is boiling the bat dry. Since I'm in a campground, I just want to disconnect the charger for the time being.manual and docs are really lacking
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Old 07-19-2014, 10:45 PM   #5
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Well, lets assume maybe a couple of cells were in need of distilled water, then you noticed they were dry when you smelled the acid gassing off. For the time being, disconnect the shore power, let the battery storage area vent properly(gas is combustable) and refill the batteries to the bottom of the plastic cylinder you see when you have the caps off looking in. Then reconnect and wait a couple hours and see if you see gassing (bubbling). If your converter is a recent build, its most likely a three stage, putting out different amperage at three different levels, depending on the batteries needs.

Do a little research on three stage converters, so your familiar with how they function in your situation, amperage outputs at stage, etc.

If its gassing after a couple hours under shore power, disconnect from shore power for the night just to be safe.
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Old 07-19-2014, 11:00 PM   #6
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Thanks for the reply. Battery did bubble after adding water. Battery is hot! I had it off shore for 7 he's (trip to new campsite) afraid of fire so I disconnected the neg lead. Since the converter should still, and it does, the 12v systems. I hope I'm good till I can test both the battery and the charger. Will research the 3 phase. I will report back when I find the issue.
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Old 07-19-2014, 11:07 PM   #7
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Yes be safe battery explosion can take off the front of your TT. Never saw personally but pictures is close enough to get to battery explosion.
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Old 07-19-2014, 11:19 PM   #8
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Quote:
Originally Posted by GeoArm View Post
Thanks for the reply. Battery did bubble after adding water. Battery is hot! I had it off shore for 7 he's (trip to new campsite) afraid of fire so I disconnected the neg lead. Since the converter should still, and it does, the 12v systems. I hope I'm good till I can test both the battery and the charger. Will research the 3 phase. I will report back when I find the issue.
Also, FYI some converters are designed to be used ONLY when a battery is connected. In essence it acts as a buffer for the amperage output from the converter to "smoothe" it down to the 12V output. You might risk converter damage if it is not equipped with circuitry to be used in absences of a battery connected. You can look up your converter operation manual, just look at the make and model off the cover, and it will tell you if you should be running it that way. It sounds like your converter isn't stepping down it's output, either because the battery is shot, or the converter itself malfuntioned. In any case be safe and Good luck.
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Old 08-02-2014, 06:53 PM   #9
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Turns out the battery has a bad cell. Battery only 18 months old but not covered after 1 year. Interstate 24 deep cell. They recommended to check the water in the battery once a month, as I leave it on shore power at home. How often does every one check their house battery?
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Old 08-02-2014, 07:02 PM   #10
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That is why I like gel cell battery's cost more but never have to add water. Get about 10 years out of battery.
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