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Old 07-31-2021, 09:40 AM   #1
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Battery question

I currently have 2 6 Volt deep cycle batteries wired in series for my house batteries.

Can I install two 12 Volt AGM Deep Cycle Batteries and wire them in parallel without damaging my coach?
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Old 07-31-2021, 09:42 AM   #2
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Of course.

But, look at amp-hrs @ 12 VDC and $$ of deep cycle 12 VDC batteries and you may stay with the 6 VDC in series.
Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
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Old 08-01-2021, 07:52 AM   #3
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Are both sets of batteries AGM? If you're mixing wet cell with AGM on the same charger, you'll need to make sure it supports both types.

It will probably need to be set for AGM as that lower charge voltage won't boil the AGM but it will still charge the wet cell.

I've been told not to mix them, but that isn't expert advice.
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Old 08-01-2021, 09:46 AM   #4
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Not the optimum setup but it won't damage the RV in any way.

Mixing different type and age batteries together will give you more capacity but may not give the longest life.
With proper care you will still get years of service out of them.

Whenever the RV is running, and on many RVs when on shore power, both chassis and house batteries are connected anyway.
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