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Open Roads Forum  >  Class A Motorhomes

 > Adding house batteries to late model HR

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Count_D_Money

Western MI

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Posted: 02/10/09 02:22pm Link  |  Quote  |  Print  |  Notify Moderator

Has anyone added house batteries to the standard 4 6 volt batteries that come with the Endeavor/Scepter; Diplomat/Camelot (and probably others).

I have an 06 Scepter with 4 house batteries in an outside compartment with a slide out tray with no more room. I have AGM's and want to add four more probably in the pass through bay with the converter, water heater, water pump, etc in it. Just need to know how I would "tie" them in to existing 12 volt supply/inverter/charger, etc. Any thoughts?

blousteau

Baton Rouge, Louisiana

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Posted: 02/10/09 02:54pm Link  |  Quote  |  Print  |  Notify Moderator

I don't know if that is the best place to put them. To much equipment that could cause a spark and ignite any hydrogen gas that would build up during charging, etc. Other than that you would wire them the same as your others, then connect the pos leads from bank one and two together and the neg from bank one and two together (or attach both Neg to the frame), make sure you put a DC fuse or breaker close to the 2nd set of batteries on the Pos Cable that matches your cables amp carrying capacity. Then they will be tied into the 12 volt supply / inverter and charger. If you wanted you could also add in a battery selector switch allowing you to choose between banks. Whatever you do, don't skimp on the battery cables. We used 00 welding cable when we changed ours out last, and put in our inverter. There are several charts out there on the internet for sizing cables based on Amp draw, Fuse Size, and battery bank Ah capacity.

wilpower

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Posted: 02/10/09 03:02pm Link  |  Quote  |  Print  |  Notify Moderator

There should be plenty of room on the battery trays. Ours has room for at least 2 more, on the "house" tray, and 2 on the "chassis" tray.


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OnaQuest

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Posted: 02/10/09 03:43pm Link  |  Quote  |  Print  |  Notify Moderator

blousteau wrote:

I don't know if that is the best place to put them. To much equipment that could cause a spark and ignite any hydrogen gas that would build up during charging, etc.


AGMs don't gas. put them where you want them.


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Ivylog

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Posted: 02/10/09 04:36pm Link  |  Quote  |  Print  |  Notify Moderator

I was able to get a second rack in my battery compartment by lowering the rack that was in there. It was several inches off the bottom and now I have room for 8.


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flhtci-rider

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Posted: 02/10/09 07:24pm Link  |  Quote  |  Print  |  Notify Moderator

I'm thinking of doing the same thing. What I think I will do is take the 2 engine batteries out of the first shelf and install the 4 6 volt there. Then in the engine compartment on the 2" x 2" bar that crosses from left to right weld a box there for the 2 engine batteries. What do you think of that idea. If you want pm me on this.


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The Beave

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Posted: 02/10/09 09:49pm Link  |  Quote  |  Print  |  Notify Moderator

My inverter installation required that I select the type of batteries being charged, wet cell or AMG etc. If I were you I would verify if you can charge both types of batteries at the same time as they each have unique charging profiles.


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Count_D_Money

Western MI

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Posted: 02/11/09 08:32am Link  |  Quote  |  Print  |  Notify Moderator

flhtci-rider wrote:

What I think I will do is take the 2 engine batteries out of the first shelf and install the 4 6 volt there. Then in the engine compartment on the 2" x 2" bar that crosses from left to right weld a box there for the 2 engine batteries. What do you think of that idea.


Not being a mechanic, it sounds like a very good idea. Would the road spray that may infiltrate the engine compartment pose any problems?

Count_D_Money

Western MI

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Posted: 02/11/09 08:35am Link  |  Quote  |  Print  |  Notify Moderator

wilpower wrote:

There should be plenty of room on the battery trays. Ours has room for at least 2 more, on the "house" tray, and 2 on the "chassis" tray.


My Scepter is not a tag and only 40 feet long. Trust me, the battery compartment is full.

blousteau

Baton Rouge, Louisiana

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Posted: 02/11/09 09:39am Link  |  Quote  |  Print  |  Notify Moderator

My bad, didn't see the AGM part! Sorry.

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