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Old 03-09-2007, 11:14 AM   #1
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First of all I know you're supposed to change both battereies at the same time, but that's not the question here. I have a 2002 Winnebago Adventurer and this last summer in Utah we had to buy a house battery (12 volt)to go with the other battery that was good. Our engine battery seems to be all right. The newer house battery is boiling now, not then when I first used it. lots of gasses coming off. I added water this morning as a couple of the cells were low. I called a local RV repair and they said the house batteries were unbalanced and the newer one was doing all the work. That was not the case after I got the new battery. The older one seems all right, full up with water. I usually have the RV plugged in so I unplugged it and the battery still boiled. QUESTION: Could there be anything else causing this problem? Right now I'm going in Tuesday to the RV shop and I'm sure they are going to put in 2 new house bateries. Thanks in advance.
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Old 03-09-2007, 11:14 AM   #2
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First of all I know you're supposed to change both battereies at the same time, but that's not the question here. I have a 2002 Winnebago Adventurer and this last summer in Utah we had to buy a house battery (12 volt)to go with the other battery that was good. Our engine battery seems to be all right. The newer house battery is boiling now, not then when I first used it. lots of gasses coming off. I added water this morning as a couple of the cells were low. I called a local RV repair and they said the house batteries were unbalanced and the newer one was doing all the work. That was not the case after I got the new battery. The older one seems all right, full up with water. I usually have the RV plugged in so I unplugged it and the battery still boiled. QUESTION: Could there be anything else causing this problem? Right now I'm going in Tuesday to the RV shop and I'm sure they are going to put in 2 new house bateries. Thanks in advance.
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Old 03-09-2007, 03:22 PM   #3
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You old battery will not charge. Your inverter or converter is trying to charge the old battery and thus over charging your new battery. Replace the old battery with the exact battery that you purchased last summer in Utah.

Remove the old battery and use only your new one until you get another matching battery.

We have stayed at the Cracker Barrel in Mechanicsville.

-Tom
currently parked in Crystal River, FL
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Old 03-10-2007, 04:14 AM   #4
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Believe Tom. Multiple batteries must be of the same capacity and age to work together properly. I hope the new battery hasn't warped the plates from the heat of overcharging, otherwise you will be buying two.
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