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Old 07-04-2014, 07:41 PM   #1
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Expanding battery box

I am new to this forum so I hope I am posting to the correct message board. I have a 31ft 2006 Class C Jayco Greyhawk. I am in the process of planning the installation of a solar system for the RV. My first challenge is to expand the battery storage compartment so that I can install two 6V golf cart batteries. The current box holds a single 12V battery. In planning a new box I will be able to use some of the existing mounting bolts but will need to have additional support to hold the additional battery weight. I do not know the typical thickness of the plywood subfloor for an RV and am wondering if I could use lag screws into the subfloor. A more complicated solution would be to weld brackets to the cross members for the additional support. I would appreciate any suggestions about how to accomplish adding extra support for the new battery box.

Tim
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Old 07-04-2014, 08:26 PM   #2
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Tim, I have a 2005 Greyhawk. I don't know if yours is the same as mine, I moved my batteries (added 4 instead of two) into the basement compartment to the rear of the battery compartment. On my model this is the compartment that goes all the way thru. I sealed the compartment to that side and put a vent in the door. You don't want the gases to float around. I put in a heavy duty slide-out tray with a heavy plywood base so I could more easily check or work on the batteries. They batteries weigh about 40 pounds each so I made sure it was right. I was right next to the batteries compartment so the wiring was close enough where I did not have to expend the leads running into it. I also have the solar and it keeps all four batteries charged. t is really nice when you are boondocking with out having power being one of the possible problems. Remember there are no dumb questions, so ask if you don't understand.
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Old 07-05-2014, 02:19 PM   #3
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ChuckD37

Thanks for the reply. Unfortunately my battery box is about half way along the driver side and under the slider section. I am trying to stay as close to the original box as possible.
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Old 07-05-2014, 08:51 PM   #4
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That is a good idea. Amazing how they change in only a year.
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Old 07-07-2014, 10:51 PM   #5
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My battery box is behind the rear wheels on the drivers side. I attached extra support to the frame to gain room for another battery.. Even though I had a welder handy I bolted everything. With a good sharp drill bit it isn't a problem. I don't think I would use lag bolts in to the floor. Going over a large bump they may pull out. Maybe if you can go through the floor under a cabinet then a bolt with washers should be good. Stan
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Old 07-10-2014, 02:20 PM   #6
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Have you looked at battery boxes that will fit in the existing section? I'd start there and probably re-use the existing hardware. Do note that the ventilation isn't great in that area...
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