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Old 06-26-2020, 05:30 PM   #1
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Join Date: Apr 2020
Location: Fort Vermilion, Alberta
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Dead house batteries

I hooked up to 30 amp plug and everything seemed to be charging well. A day later I have one battery boiling and extremely hot.

I unhooked shore power and left it for 3 days. Now the batteries were totally dead. I took the the fried battery out. Still have 4 left in sequence. These are the big 12 volt agm 8D battery’s.

Hooked back up to shore power and it will constantly flip out the charger every 20 seconds or so.
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Old 06-26-2020, 05:57 PM   #2
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Sounds like the bad battery may have cooked the charger.
Happy Glamping.Norman, 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand!
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Old 06-26-2020, 10:14 PM   #3
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Sounds like your remaining batteries could be dead, charger will not stay in charge mode if batteries are completely dead.
2002 Monaco Executive 500 ISM
2004 GMC 2500HD 4X4
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Old 06-27-2020, 01:02 AM   #4
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Disconnect all of them and try charging one at a time.

You could charge one or two together and then add the others as the voltage comes up.

I would go each one and then let each sit for a few days to see if it goes dead.
One bad battery usually means the others are right behind them.
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Old 06-27-2020, 01:31 AM   #5
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Location: Fort Vermilion, Alberta
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I think outbound is right. When I start the coach they come up to 13 + volts but when I turn it off they die really fast. Now the charger won’t come on at all on shore power. Guess I’m buying new battery’s.

I just bought this unit from an older fellow who had it parked in his heated garage and constantly plugged in to shore power. I drove it home and parked it for about a week before I plugged and then started having these issues.
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batteries, house batteries

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