Hi. Lot's of learning going on! We have a 2003 Fleetwood Tioga and we killed the batteries during storage. Didn't disconnect them and that damned LP detector wiped the batteries out: chassis and house, so we think... So we got a new chassis battery first. Replaced that ez pz. Went to replace the house batteries and that is when the proverbial poo hit the fan. We had 2 Napa deep cycle batteries at 75amps each. I hit autozone and got 2 Duralast 65amps batteries. Swapped em out. So far so good. Kept the wiring the same. Now, when we turn the rig on, there is a shril continuous tone coming from the converter (the plug with all the wires and fuses?) area of the battery compartment. Lights don't turn on. Generator won't kick up. Are converters amp specific? IE, should I swap out the 65amp batteries with 75amp batteries and keep all the things like for like? Any helps appreciated!imgur pictures

The converters are not battery size specific, at least not in terms of everything working or not working. (If you were to change to a much larger battery bank, a larger converter would be sensible so it doesn't take forever to recharge.) Most likely something is not wired correctly, or a connection isn't sound, or possibly the battery disconnect switch is set to storage mode, or something of that ilk. If things were connected improperly, there is the chance that you may have damaged something in so doing.

Thank you very much for your reply! Good to know that the slightly less amperage set of batteries is not a culprit. Wiring. I duplicated the original exactly to the original as far as I can tell. In the pictures I shared there on Imgur, on the right battery, the negative terminal has a small white and small black wire co-mingling with the big power cable. Do those need to stack in a specific way? I'm also fairly certain that at no time I did a neg/pos tap tap. But, who knows? Maybe I did booger something up unknowingly...thanks again!

STOP, you are wired incorrectly disconnect all the negative wires now. You have the 12 volt batteries wired in series making 24 volts. Per your pictures you removed two 6 volt batteries correctly wired in series and replaced with two 12 volt batteries. The 12 volt batteries need to be wired in parallel. let me find a picture.Here, you need to be wired like the batteries in the LEFT picture. Your old wiring is in the right picture. Hopefully you did not blow any fuses. But you'll find out after you correct the battery wiring.

Disconnected! Thank you very much! Waiting for picture :) Hopefully I didn't cook something...

Refresh for the picture. Just as an aside, Automotive or RV batteries are about 2.1 volts per cell. So in your original picture there are only three cell caps per battery making 6 volts per battery. When wired like in the picture on the right they are in series and the voltage adds up to 12. In your after picture there are two large caps which are indicative of three cells under each cap for a 12 volt battery. So when you wired them is series you created 24 volts. Once you re-wire them like the left side picture you will only have 12 volts in the system. Unfortunately I don't know if this would cause any damage. But my guess is there will possibly be a few blown fuses. Oh, also you can still connect the two small wires to the negative side of the batteries after you re-wire them. They are still negative wires so they still go to the negative terminal (either negative terminal).

New House Batteries, Converter Beeping? | Good Sam Community

Munk888
Explorer
Jan 12, 2020
Disconnected! Thank you very much! Waiting for picture :) Hopefully I didn't cook something...
opnspaces
Navigator II
Jan 12, 2020
STOP, you are wired incorrectly disconnect all the negative wires now. You have the 12 volt batteries wired in series making 24 volts.

Per your pictures you removed two 6 volt batteries correctly wired in series and replaced with two 12 volt batteries. The 12 volt batteries need to be wired in parallel. let me find a picture.

Here, you need to be wired like the batteries in the LEFT picture. Your old wiring is in the right picture.

Hopefully you did not blow any fuses. But you'll find out after you correct the battery wiring.
Munk888
Explorer
Jan 12, 2020
Thank you very much for your reply! Good to know that the slightly less amperage set of batteries is not a culprit. Wiring. I duplicated the original exactly to the original as far as I can tell. In the pictures I shared there on Imgur, on the right battery, the negative terminal has a small white and small black wire co-mingling with the big power cable. Do those need to stack in a specific way? I'm also fairly certain that at no time I did a neg/pos tap tap. But, who knows? Maybe I did booger something up unknowingly...thanks again!
DrewE
Explorer II
Jan 12, 2020
The converters are not battery size specific, at least not in terms of everything working or not working. (If you were to change to a much larger battery bank, a larger converter would be sensible so it doesn't take forever to recharge.) Most likely something is not wired correctly, or a connection isn't sound, or possibly the battery disconnect switch is set to storage mode, or something of that ilk. If things were connected improperly, there is the chance that you may have damaged something in so doing.

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