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Old 05-08-2016, 08:28 AM   #1
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Battery Question

Currently my 2016 rv has two 6V house batteries. I'd like to add either two more 6v batteries or one 12v battery.
Opinions welcome!
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Old 05-08-2016, 08:32 AM   #2
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2 six volt if you have the room.
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Old 05-08-2016, 08:40 AM   #3
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I am not sure adding a 12 volt to your already two 6 volt batteries is a good choice. You would be best to put in more 6 volts if you have the room. It is best to have all batteries the same from what I have learned.
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Old 05-08-2016, 08:48 AM   #4
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A 12 volt and a 6 volt battery are two totally different batteries. Usually the 12 volt batteries have a lot of plates. The reason for all the plates is to give a lot of energy in a quick burst. (starting the engine.) 6 volt batteries designed for house batteries are made with less plates and heavier plates. They have heavier and thicker seperators. They are designed for long slow discharge. The 6 volt will give more cycles and more amp hours. Always go with 12 volts for engine and 6 volt for house.
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Old 05-08-2016, 08:49 AM   #5
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Lots of conversation on the forum these days about batteries. New types of bats like AGM and most recently, lithium, make it harder to decided what is "best" for your application. Generally speaking, wet cell, 6-volt bats seem to be better for deep-cycle apps like house bats. Installed in series, the thicker plates and more lead gives them good performance at reasonable cost. Available space and cost may dictate using a single 12v bat, or one of the more expensive but less maintenance "new" bat types......good luck....
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Old 05-08-2016, 09:01 AM   #6
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Roada-

It would help to know what you're trying to accomplish by adding more batteries. Could you describe your thinking in general, and then perhaps answer some of the following questions?

1) Do you know your current electrical demands?
2) Do you expect to be off of shore power often, or for extended periods?
2) Does your Challenger have an inverter?
3) Does it have a battery monitor, such as the Trimetric 2030, the Magnum BMK or the Xantrex LinkPRO?
5) Does it have solar panels and a solar controller? Are you interested in getting a solar charging system?
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Old 05-08-2016, 05:59 PM   #7
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Quote:
A 12 volt and a 6 volt battery are two totally different batteries. Usually the 12 volt batteries have a lot of plates. The reason for all the plates is to give a lot of energy in a quick burst. (starting the engine.) 6 volt batteries designed for house batteries are made with less plates and heavier plates. They have heavier and thicker seperators. They are designed for long slow discharge. The 6 volt will give more cycles and more amp hours. Always go with 12 volts for engine and 6 volt for house.
You are confusing the voltage with deep cycle vs starting batteries. While the typical 6v golf car battery is indeed a deep cycle, so are the 12v batteries from Trojan, Lifeline, etc. And not all 6v batteries are deep cycles.
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Old 05-09-2016, 05:21 PM   #8
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Battery response
I would either install two 6v deep cycle batteries wired in series or one 12v deep cycle battery wired in parallel----not car batteries.
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Old 05-11-2016, 11:33 PM   #9
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Battery response
I would either install two 6v deep cycle batteries wired in series or one 12v deep cycle battery wired in parallel----not car batteries.
If you go with single 12V make sure it is a True Deep Cycle, NOT a marine deep cycle. The marine deep cycle is a hybrid battery of deep cycle and automotive starting battery and doesn't do either very well.
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Old 05-11-2016, 11:51 PM   #10
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Originally Posted by ga traveler View Post
A 12 volt and a 6 volt battery are two totally different batteries. Usually the 12 volt batteries have a lot of plates. The reason for all the plates is to give a lot of energy in a quick burst. (starting the engine.) 6 volt batteries designed for house batteries are made with less plates and heavier plates. They have heavier and thicker seperators. They are designed for long slow discharge. The 6 volt will give more cycles and more amp hours. Always go with 12 volts for engine and 6 volt for house.
Not totally right. Check out 12 Volt 8D batteries, they can be starting batteries, deep cycle or AGM batteries. We have four of them with room for two more in the battery tray. They weigh over 120 #'s each and are usually bigger than most rigs have space for. Our four starting batteries are no maintenance 12 V 925 CCA.
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