6 or 12 volt

[Sooners]

I am new to RV'ing and need to replace the batteries in a 30' TT. it has two- 12 volt Interstate Marine Deep Cycle. I'm thinking of changing to two 6 volt Trojan or Crown batteries. what do I need to do or thnk about before doing this?

[the_happiestcam]

Get the 6 volt - and get the sealed ones so you don't have to worry about water.

[donn0128]

Call a local golf cart repair facility and ask about buying batteries from them. Usually because they buy in such volume you can get a decent price from them. Also remember that 90% of the batteries sold in the US are made by one of two companies. So paying for a name is not really as smart as it sounds.

[BobsYourUncle]

I would stick with the Interstate Batteries;

In 2005 I bought 2 - 6V U2200 golf cart batteries for my TT. 8 years later they are still going strong and offering plenty of juice for my TT needs.

I just sold my old TT and bought a replacement so decided to let the 8 year old batteries go with the trailer and buy new ones. My replacement TT has 2 near new 12V batteries, different brands and ages. I much prefer the 2 - 6V over the 2 - 12V. More oomph out the 6V setup.

Yesterday I bought 2 new Interstate GC2-XHD-UTL deep cycle RV batteries. They are designed and built for the usage we put our rigs through.

I did not even want to check out other brands due to the awesome service I got out of the U-2200's. I would have bought the same ones but they don't offer that model anymore. The GC2's are an updated version of the U2200.

As mentioned, the 6V batteries are a bit taller. My battery box houses them with an inch to spare.

[Golden_HVAC]

The 6 volt battery is typically a little larger and might require a larger battery box.

My motorhome came with 6 volt batteries and they lasted 13 years, and I gave them to a friend who kept using them. Keeping them full of water is a good way to make them last over 10 years. My replacements only lasted 6.5 years, I was not taking good care of them, so they did not last long.

The pair of 6 volt batteries are just like one 130 pound battery, in two easy to lift sections, you will need to install one wire between the two batteries.

I bought my last batteries from Costco. They are only 2 months old, so far they are 100% reliable.

Fred.

[2oldman]

12v vs 6v batteries 2013

12v vs 6v 2010
Why 2 6? 2006