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Old 07-08-2009, 06:05 PM   #11
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Re: SMB dual aux battery setup/inverter

hey jc ed here just starting my build just wondering why nobody else is using 2 6v batteries is there any draw backs if you could send any battery or wiring pics or diagram that would be great thanks ed
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Old 07-08-2009, 07:06 PM   #12
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Re: SMB dual aux battery setup/inverter

Those are mostly golf cart batteries hooked in series. They off gas more than AGM's (AGM's don't in normal situations) and you always have to monitor the water levels. My personal opinion would be never to have a wet cell battery in living quarters. Most big RV's have a properly vented cabinet; SMB's as a rule don't and are exposed to extreme temps. AGM's seem to charge up faster where lead acid batteries are better suited to be charged for longer times at lower rates to keep from boiling. AGM's can sit with no load for a long period w/o loosing any charge; not so with lead acid batteries. Also AGM batteries are some of the most rugged batteries able to handle extreme off roading. But 6v golf cart type batteries can be discharged much deeper than an AGM w/o harm. There are automatic water minders (as the previous post stated) for wet cell batteries that are used on many coach RV's.
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Old 07-18-2009, 09:51 AM   #13
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Re: SMB dual aux battery setup/inverter

Hey Jason

Would you mind posting pics of your batter box build?

Thanks

Tom
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Old 07-18-2009, 03:55 PM   #14
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Re: SMB dual aux battery setup/inverter

I am currently in the process of completing my project. I want a simlar system. I can post a drawing but it wont be until monday. I will be using a 2000W inverter, with automatic transfer switch that will automaticly pick AC power, inverter power. Also, I chose to go with a EU1000 generator for size and weight. I have it hooked to a 30 amp battery charger that keeps batteries up in the event I need to use the micro for 20-30 min.
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Old 07-20-2009, 09:15 AM   #15
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Re: SMB dual aux battery setup/inverter

http://www.bestconverter.com/ITS-30R-30 ... p_332.html

This is another relay transfer unit that can be used when installing an aftermarket inverter. Click on the "Product Manual" box and it will bring up some wiring diagrams. posting.php?mode=quote&f=14&p=19616#
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Old 07-23-2009, 07:13 AM   #16
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Re: SMB dual aux battery setup/inverter

Quote:
Originally Posted by bluedog225
Hey Jason

Would you mind posting pics of your batter box build?

Thanks

Tom

Tom,

Here are 3 of the pics of the battery box build...more to come. It's just 1/4" aluminum plate welded together to fit both 6V batteries. I drilled and tapped the frame rail on the driver's side 3 places just in front of the gas filler for 5/8" (or 1/2") fine thread studs and machined standoffs so the box does not interfere with the E-brake cables. A few little L-brackets hold the batteries down and some rubber toolbox lining pads the inside of the box. I also drilled several holes in the bottom just in case there was any moisture collection. It's been about 6 months now and is working great! This way I am able to run the high amp hour 6V batteries and not have to worry about outgassing inside the cab! I figured it was the best of both worlds. Plus the automatic fill is effortless! I check it every other month or so and only have to add a tiny bit of distilled water.

I am trying to find the "final" wire diagram I sketched up to post it here as well...if I can not find it, I'll just re-sketch it and post it.

Jason
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IMG_4257.jpg   IMG_4258.jpg   IMG_4259.jpg  
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Old 07-23-2009, 07:16 AM   #17
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Re: SMB dual aux battery setup/inverter

Quote:
Originally Posted by bluedog225
Hey Jason

Would you mind posting pics of your batter box build?

Thanks

Tom

Here's 3 more...
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IMG_4260.jpg   IMG_4261.jpg   IMG_4262.jpg  
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Old 07-23-2009, 07:19 AM   #18
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Re: SMB dual aux battery setup/inverter

Quote:
Originally Posted by bluedog225
Hey Jason

Would you mind posting pics of your batter box build?

Thanks

Tom

Final 2 pics...
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IMG_4263.jpg   IMG_4264.jpg  
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Old 08-14-2009, 07:15 AM   #19
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Re: SMB dual aux battery setup/inverter

The 6v golf cart batteries out gas a lot as previously mentioned. That requires that their water level be checked frequently and topped off as required. I think I see an "extra" hose in your neat set up is that a battery water fill tube?
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