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Old 06-26-2020, 05:30 PM   #1
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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.
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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.
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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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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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