Duracell Golf Car Battery, Group Size EGC2

I installed 4 of these in a 5th wheel about three years ago. WORK GREAT. Boon-docking and generator starting and have never missed a beat. There is some poor to bad information on this page about batteries. Research on Youtube from only people that sell campers so that you get it correctly. DO NOT go off of someones opinion. ( if you research my info, you will find it to be true) Also NEVER replace only one battery in a group of a series or parallel configuration as your power will ONLY be as high as the weakest battery. REPLACE THEM ALL and they will serve better and last longer. Also when you install a group, either in parallel or series, ALWAYS buy batteries with the same manufacturing date. It matters especially for longevity. I have NEVER known the folks at Sam’s to not be of help. They want to keep there jobs and they do have managers. I also have the Duracell batteries in three of our cars. GREAT QUALITY PRODUCT. The 5th Wheel came with 2 12V (volts) batteries of which I gave to my daughter and replaced them with 4 Duracell 6V DEEP CYCLE batteries in a Parallel, Series configuration. If your battery has a CCA, Cold Cranking Amps, reading, it is NOT a TRUE deep cycle battery. You want low power draw over a period of time. Not HIGH power on a short burst. Two 12v batteries in Parallel @ 120A (amps) each = 240A, Two 6V batteries in series @ 230A each = 460A giving you much more usable power. If you have the room, with FOUR 6V's in Series and Parallel, you double it. I am also a big proponent of solar on an RV. If you can afford it, go with a MPPT charge controller as it gives a higher percentage, approx. 15%, of power, especially in low sunlight. Even on a hundred watt panel in low sunlight you will be trickling your batteries. HAPPY CAMPING!

I replaced a pair of 4 year old Trojan standard T-105's with a pair of these batteries, about 18 months ago. These are re-labled DEKA GC-15 batteries made by East Penn. They are a couple of pounds heavier than the T-105 but the performance has been comparable in a small solar application. I do watch the water levels closely, and have a 3 stage charger to top them up monthly and never go below 50% capacity. Cons: Warranty ends at 12 months, with no proration to 24 like Trojan. Can't use the Trojan HydroLink watering system. In my application these are just as good as the T-105 Trojan.