Battery

I have been using 2x6V Rolls Surette deep cycle batteries for the last 4 years. No issues to this point. I'm about 50/50 shore power/boondock.
Rolls

Before that, I used a couple of Trojan T105's and replaced them after almost 4 years of 60/40 Boondock/shore power.
Trojan

Before that I had a single (cant remember the brand exactly, but well known) Marine deep cycle (they say) which I used for one season only before upgrading to a true deep cycle battery as opposed to more of a starting battery.

Either Rolls or Trojan work well IMO. I used a 1500W inverter with both setups.

I would never go back to a marine "deep cycle", but that's just me................

“I will be be relying on it heavily for use” - “I am usually connected to shore power“
To me, those two statements are contrary to each other, it should be one or the other.

joelc wrote:
As you can see I have a fifth wheel, and I am trying to find a replacement Deep Cycle battery. Who out there has had good luck with a particular brand for their 5er that lasts. Please include brand and Amp hours or name on battery so I can look it up. The one I have now is less than 2 years old and I believe it is causing me problems.
I have a 12V Dometic fridge, so I will be be relying on it heavily for use. I am usually connected to shore power.

Do an energy audit. Design a system with 3 days capacity.

Add solar

For battery and solar surf here:

https://freecampsites.net/adding-solar/

Interstate

This is the battery we used in a bank of 4 on our 5th wheel. They lasted 6 years and were still working but getting weak.

Ken

The question is whether or not you have room enough for 2 batteries. Most true wet cell deep cycle batteries are 6 volt which means 2 of them will be required.

My Costco GC2 served me very well. Lithium battery is even better.

Had 8 Trojan 105s in the mh for 14 yrs and looked after them untill 1 shorted out takin with it the controller, mh was plugged into power twice in all that time, 640 watts of panel, so if you look after them they will last, never let them get below 12.2 volts, run 6 of the same in the fw and same results.480 watts of panel.

Look at the LifeLine AGM Batteries -

GPL-31XT AGM Battery
Cold Cranking Amps

68F 950

32F 800

0F 650

Rated Cap. Amps Hours @ 20hr Rate
125

Minutes of Discharge


25 Amps
230

15 Amps
455

8 Amps
910

Currently I have 1 12V unit and can not fit another. It is a Super Start SSB 31DCM. I power a 12V compressor type fridge and all other 12V RV lights, etc. So I need 1 reliable 12V battery. 2 large wont fit. I am looking for something under $200.00. Brand and Model please as there are different models of specific brands of 12V Deep Cycle. I dont think 2 6V will fit.

If you are looking for a single marine/rv type 12v, I'd suggest a group 27, or 31, if it fits. My dealer recommends the interstate brand, and mine is still in use, since Aug 2012.

IMO, the secret to longevity is to not discharge these battery types to near 50% often. Mine is connected to shore power, or gen, most times, other than when towing.

Jerry