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Old 12-17-2015, 12:15 PM   #1
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Which battery to buy?

I have searched, read, and still haven't found recommendations on which brand of battery to buy.

So, what say you?

Also, what are the advantages of 2 6v vs a 12 v? Can't seem to find that answer either.

I have spent 2 days of searching and reading and can't find it. I apologize if i have missed it, but I need a new battery for the upcoming season and am trying to get my plan together.

Thank you
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Old 12-17-2015, 12:56 PM   #2
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Please check-out this thread https://www.jaycoowners.com/forums/f3...rade-2752.html and Google RV BATTERIES, there is a wealth of information out there.

I'm the DW, and left the research to the DH ~ as Tim Allen says, argh! argh! argh! more power! In November 2014 we took our new TT on a 3-day shakedown at the beach where it was wicked-cold, we were running the furnace and drained the "off the lot" batteries down to the point where the alarm went off at 5:30am on Sunday morning. Couldn't brew coffee so packed-up and left - 'nuf said! We primarily 'dry camp' (no hook-ups) at state and national parks so last year Santa brought generators, this year he's bringing two Trojan T-145 6v deep cycle batteries.
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Old 12-17-2015, 01:05 PM   #3
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If you boon dock a lot, 2 6v batteries is the way to go. If you mostly use shore power just get a cheap 12v RV deep cycle battery. It's really only for the breakaway cable to set the brakes in the event the trailer decouples from your truck.
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Old 12-17-2015, 01:13 PM   #4
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Quote:
Originally Posted by Hattie View Post
Last year Santa brought generators, this year he's bringing two Trojan T-145 6v deep cycle batteries.
Hattie is getting a GREAT set of 6 Volt batteries for Christmas. I am looking at getting myself the 2nd SOLAR Panel for my present. I had the same experience as she did with the original battery supplied by the Dealer (Interstate 85Ahr (43Ah usable). Ran out of POWER on the first night. I upgraded to 2 T145 batteries 3 years ago and have no regrets. They are rated at 260Ah (130Ah usable), are True Deep Cycle batteries. I added SOLAR and rewired the TT's battery charge controller to another AC 110VAC breaker so I could turn it off when using SOLAR, well I have yet to turn it back on. A GREAT combination SOLAR and T145 batteries.

BUT.. with that being said, everyone has their favorites and if you go with a TRUE DEEP CYCLE BATTERY (no CCA ratings), a reputable manufacture, enough Ah's, proper size cabling, a good battery maintenance plan, you can not go wrong. Trojan is probably the most favorite brand for RVing.

If you are not going to be dry-camping a regular 12 volt Marine/RV battery will do. Dry-camping you are better off going with the (2) 6 battery volt setup.

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Old 12-17-2015, 01:14 PM   #5
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One thing to keep in mind with dual 6v batteries is if for some reason one of them goes bad you won't have any power to the trailer. This is the reason I run dual 12v even though it's not as good.
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Old 12-17-2015, 01:15 PM   #6
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Perhaps there's TOO much information out there. Well, there's a LOT anyway, here and elsewhere.

Anyway, I researched this not long ago, and the best value I could come up with was Trojan. I was looking for a single 12V replacement and their price and reputation are what attracted me. There are many dealers out there, so you'll have to shop. Shipping is the killer, but there are many who will ship for free.

I went back and forth between 2-6V and 1-12V or 2-12V. Eventually I came to the conclusion that I don't boondock enough to justify a 2-6V system. Perhaps a 2-12V system? At the most, maybe? More likely I'll just end up replacing my dealer-supplied Interstate with one good quality Trojan 12V battery. I wouldn't even be replacing that except that the dealer killed it (pretty much all the way) when I had the trailer in for service, and now it won't take a full charge.

A lot of what you choose depends on your usage. We VERY RARELY, if ever, use our trailer without being hooked up to power of some kind, so our battery really just needs to actuate the trailer brakes in the event of a disconnect. Even my damaged battery will do that easily. I won't look seriously at replacing my battery as mentioned above until we have plans for a trip where we'll need it. For now, the one we have is sufficient, and I have other things I need to spend that money on.
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Old 12-17-2015, 01:24 PM   #7
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My problem is mine Interstate dealer battery was drained at the dealer, now if it sits for a week, the jack won't work. I have just been backing up the truck close enough to get it high enough (I like to keep it level when parked), then hook up. I don't think we'll ever boondock. I'm getting a new one and want to do it right. I am getting a Battery Doctor shut off too. I think the drain from the radio face, propane sensor, and alarm are more than it can handle now.
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Old 12-17-2015, 01:33 PM   #8
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Trojan 27 TMX Deep Cycle Battery Free Delivery most locations in the lower 48*.

This is the one I was going to get from this vendor. It was about the best price I could find, and shipping is free to most places. IMO $160 for a good quality true deep cycle battery (not dual purpose) is a decent deal.

This is what I would get if I were in your shoes. Further, I would get a "Battery Tender" brand battery maintainer (can be had for around $25) and pull the battery when you store the trailer. Store the battery on the Battery Tender in your garage, and forget the cut-off switch.
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Old 12-17-2015, 01:34 PM   #9
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Quote:
Originally Posted by sugarray View Post
I am getting a Battery Doctor shut off too. I think the drain from the radio face, propane sensor, and alarm are more than it can handle now.
All you need is the standard 12Volt marine/RV battery.

If the battery Doctor shut of switch is the one that mounts on the battery terminal with a knob, there have been complaints about it not working after awhile. You may want to look into a marine type cut off switch that is designed for wet weather.
Don
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Old 12-17-2015, 02:59 PM   #10
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I bought a Crown deep cycle 12 volt. S0 far has worked well.
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