which is better, 2 6v deep cycle batteries or 2 12v deep cycle batteries?

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robobd
1988 22l
1999 ford f250 7.3 diesel

There are two ways of thinking on this from what I have been told. Two 6 volt batteries can give you more capacity than two 12 volt batteries. But, when you have batteries in series, when one goes down it can take the other battery with it and you will have to replace both. Even with one still good you will only have 6 volts which is worthless to you. With two 12 volt batteries you can loose one and still have the needed 12 volts.

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My Great Wife Joyce
2018 Jayco Jay Flight 21QB
Formerly owned 1705T and 2310H
2012 F150 4X4 SuperCrew EcoBoost w/Leer Cap
Reese WD Strait-Line Hitch
Amateur Radio K3EXU

I also remember one of our members trying 6 volts and the batteries being too tall and the battery compartment lid contacted the terminals. I have dual 12 volt deep cycles on my hi-lo and have been pretty happy with them.

I'm happy with my 2, 12V batteries in parallel too. Since I've started using a 1000 W generator to keep them charged, I've never had a problem.

I suppose you could always carry a 12V backup battery along if you adopted the 2, 6V in series approach.

- Jack

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Hi-Lo 1707T - Tire Minder TPMS on Tow Vehicle and Trailer, 300W Solar Battery Charger, Equal-i-zer WDH, Progressive Dynamics Converter, Fan-Tastic Fan, LiFePO4 battery 12V DC Electrical System
2014 F150 Platinum 4x4 3.5L EcoBoost SCrew

In my trailer, the guys building my trailer took up way too much space in the middle of the compartment for me to drop in even another Grp 24 battery.

I'd have to rework the hydralic lines in order to fee up enough space for another Grp 24 battery.

People have re-configured battery boxes and , even, installed new ones on hi-los. Do a search on battery boxes, maybe, to see if you can find the threads. I've been living with two group 24s and i think I could go 27s when these die. I have been messing with solar quite a bit this summer and am leaning towards a 100watt + system that I move around the camp site . So far all I have is a 18w which isn't good enough for extended discharge- but i use hardly any power in summer except for fantastic fan and water pump. I use Dcell lanterns inside and a couple small dcell fans plus I switched to leds for inside lights. For a good quiet generator- I think I can construct a good size solar system for same cost.

Rick

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2201 TL

2010 Nissan Titan king cab SE
4x4

I had to bend the hydraulic line out of the way on my 2209, in order to fit the second battery. I have a 100 watt solar panel, it produces about 5 amps in full bright sun light, I started out moving it around to face the sun but I was afraid to leave it out when I wasn't there for fear it would walk off. Putting it in and out became to much for me to do. We unhook and take trips a lot, fishing and site seeing. I just recently mounted it on the roof, but lying flat the output is not very good, I am going to angle it some but then it will only work when facing the sun. I will have to try and park the trailer the right way. I do have a generator but was trying to get away from using it. The solar panel did supply my needs when I kept it facing the sun all day.

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Rich
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(215TL) - 1995 21' TowLite
(2209T) - 2009 22' TowLite
(2510 ) - 2010 25'

Rich, I had the same experience with a 60 Watt solar panel for my trailer. As long as the sun shone and I could reposition it during the day to track the sun, it maintained the battery. Like you, I didn't want to leave it out when not at the trailer. It became too much trouble and I got a generator.

- Jack