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Old 02-10-2016, 04:57 PM   #1
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Curiosity killed the cat

Just wanted to know why there two poles on each side of my TT battery. One is very small and all my trailer wires are hooked to them; however there is a normal size pole also. Why is there two poles on each side whereas on my truck it has a negative and positve only.
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Old 02-10-2016, 06:12 PM   #2
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Multi use batteries. One is a bolt for RV type connections and some other uses, and a standard POST for use as a starting battery..

NOTE: Not the best choice in batteries. Since a "Dual Purpose" battery is not the best at either use.
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Old 02-10-2016, 10:41 PM   #3
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no choice

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Originally Posted by wa8yxm View Post
Multi use batteries. One is a bolt for RV type connections and some other uses, and a standard POST for use as a starting battery..

NOTE: Not the best choice in batteries. Since a "Dual Purpose" battery is not the best at either use.

Battery came with TT it is only 3 weeks old

thanks for your reply
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Old 02-11-2016, 12:02 PM   #4
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As I said, NOT the best choice in batteries (The best is a DEEP CYCLE type like the GC-2 Six volt pairs) But it is still one many Makers put in their RV's.

But think about it.. A dual purpose battery is a comprimise between Starting and Deep cycle ability.. And thus not good at either job.

That said. Keep them till it's time to replace them, then consider Golf Car batteires, if you have the room you can get those in 12 volt or six volt sizes
=6V+-6V+= 12 volt (Treat a pair of six volt as you would a single 12 volt size 4D or 8D. cause once installed, that is what they are).
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Old 02-11-2016, 01:05 PM   #5
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What I did with my batteries that came with my trailer (I received two group 24 marine/dual purpose batteries, boxes and straps installed when I picked it up).

The batteries were brand new, so I thought I could sell them. I researched true deep cycle batteries, and decided that the GC-2 batteries wired for 12 volts was going to be a good way to provide power for my needs. I bought two Interstate GC-2 batteries after I discovered that the ones Costco sold had pretty low amp/hr ratings, but their prices reflected that. I have 220 amp/he batteries.

After buying the GC-2's, I put the dual-purpose batteries up for sale on Craigslist. They were sold by the next morning, with no haggling over my price, which paid for one of the better GC-2 batteries I'd already bought.

Now I can go for two to three days without even thinking about needing a charge. The longest I've gone without charging is three full days, and the voltage was 12.2 when I fired up the gennie. This is using the water pump, lights, and the furnace a little at night.

And, in case it matters to anyone reading this, I am a full timer.
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Old 02-12-2016, 07:11 AM   #6
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1bigmess:
The GC2 look like 6V correct? So I would wire them in parallel to get the same as a single 12V cell ? I am picking up my first TT and and wanting to get it set up correct at first.

Also on the website I looked it up it stated Capacity: 232Ah so if there are 2 batteries is it 464Ah?

I see the official number is GC2-XHD-S about $130 each?
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Old 02-12-2016, 08:27 AM   #7
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If not dry camping marine type combo batteries are fine, IMHO. Inexpensive, maintenance free, readily available, and get the job done. If dry camping true deep cycle batteries and a good multistage charger are the way to go.
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Old 02-12-2016, 08:31 AM   #8
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Quote:
Originally Posted by Dr-G View Post
1bigmess:
The GC2 look like 6V correct? So I would wire them in parallel to get the same as a single 12V cell ? I am picking up my first TT and and wanting to get it set up correct at first.

Also on the website I looked it up it stated Capacity: 232Ah so if there are 2 batteries is it 464Ah?

I see the official number is GC2-XHD-S about $130 each?

No! You wire them in series to obtain 12 v. If wired in parallel you only have 6 v.
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Old 02-12-2016, 09:50 AM   #9
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1bigmess:
The GC2 look like 6V correct? So I would wire them in parallel to get the same as a single 12V cell ? I am picking up my first TT and and wanting to get it set up correct at first.
Ok, you want to do this right. So did I. I was told to read this lesson on batteries, charging, and 12 volt RV systems. I'm glad I did.

The 12volt Side of Life (Part 1)

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Also on the website I looked it up it stated Capacity: 232Ah so if there are 2 batteries is it 464Ah?
When you put two 6v batteries together to get 12 v, you double the output voltage, not the capacity. When you put two batteries together for the same output voltage, you double the capacity.

What you do get with the two GC batteries are true deep cycle batteries with thicker plates that can be brought down to 50% State of Charge and recharged without reducing battery life the way it would with the Dual Purpose batteries you can use. There is all kinds of info about this in the website I linked to above. Good info to help you run your batteries well and last years.

Quote:
I see the official number is GC2-XHD-S about $130 each?
Those are my batteries. I'm happy with them.

I full time, and dry camp >75% of the time. I made an investment in how I live, how I want to live, where I want to go and visit. If I only used the trailer as a weeklong getaway rig, I wouldn't have invested as much for batteries, solar, gennies, etc. Folks that just take a few shorter trips a year or never leave the RV park don't have to be quite as concerned about their batteries.
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Old 02-12-2016, 10:26 AM   #10
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Don't worry about the battery. If you camp were there's elec most the time then you'll be fine. You don't need two GC 6V batteries for that. However if you mostly dry camp without power then adding another battery of the same size would greatly help.
You only need two golf cart batteries if you are serious about dry camping. I've been running my two G24 12V batteries for 3+ seasons without issues. Yes they don't hold up as long as two GC batteries and I have to run my gen for a couple hrs a day.
I had to do the same with our last TT that I put two GC 6V batteries in too. It really depends on how much power draw you have each day. I could get by with less gen time on the 6Vs but still needed to run it.
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Old 02-12-2016, 12:44 PM   #11
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Quote:
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1bigmess:
The GC2 look like 6V correct? So I would wire them in parallel to get the same as a single 12V cell ? I am picking up my first TT and and wanting to get it set up correct at first.

Also on the website I looked it up it stated Capacity: 232Ah so if there are 2 batteries is it 464Ah?

I see the official number is GC2-XHD-S about $130 each?
The amp hours don't double. Only the voltage.
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Old 02-13-2016, 08:58 AM   #12
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Thanks for the info guys!

Thanks for the link. I will research it a bit more. I am just getting this TT in maybe the next month. I already have a bunch of supplies etc to outfit it with and was coming across all these threads about batteries.

I am not sure if it will come with a true deep cell or a dual purpose. The dealer said "deep cycle".

I plan on mostly camping at out campsites but on occasion will be off the grid. I may go out to WY this fall and would like to be able to pull in somewhere where there is no hookup. I am planning to get the solar panel which the TT is pre-wired for from a company called Furrion.

I have two generators at home. One is 9000 Watts and the other is a small Champion 1800W. One seems to be overkill (and heavy!!) the other may not be up to par (looking at some other threads).

I just want to be prepared for any situation as best as I could be.

Between this thread & the thread about new tires being worthless

Any info advice is appreciated - don't get me wrong.
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Old 02-13-2016, 09:22 AM   #13
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I have two generators at home. One is 9000 Watts and the other is a small Champion 1800W. One seems to be overkill (and heavy!!) the other may not be up to par (looking at some other threads).
The 9000 is overkill. Could you even get that thing in and out of the back of your pickup without help? The 1800 will do everything you need to do in the trailer except run the air conditioner, or a hair dryer and drip coffeemaker at the same time. Except for the air conditioner, it's fine.

Quote:
I just want to be prepared for any situation as best as I could be.
IMO, you really can't, but you can go broke trying. It's just a camping trip. Not the apocalypse.

Quote:
Between this thread & the thread about new tires being worthless
The brand of tires that came with my trailer is "Sierra". No website, and only a single page that has very little info from what I assume is the US importer or distributor. On their "face", they are the dreaded "China Bombs" that every is warning you about. I got TPMS for them before I went on my first trip, I inspect them every driving day, and I keep them at max inflation because there is no inflation chart for them. They have been fine.

But you have to do what you believe you need to do to be more comfortable with your rig, especially while driving.
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