Go Back   iRV2 Forums > iRV2.com COMMUNITY FORUMS > iRV2.com General Discussion
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 11-23-2014, 01:39 PM   #1
Junior Member
Winnebago Owners Club
Join Date: Sep 2013
Location: Voss,texas
Posts: 13

Which is better? 2 12v or 2 6 v for inverter.

Cevans69 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 11-23-2014, 02:51 PM   #2
Senior Member
wa8yxm's Avatar
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 23,955
Non sufficient information:
What is better is AMP HOURS, the more the merrier, and you likely want a DEEP CYCLE design too (NOT MARINE/deep cycle

So why did I say non sufficient info?

Group 24 batteries are typically around 75 amp hours at the C/20 rate and like all "Group" batteries I will discuss are usually MARINE/deep cycle as opposed to DEEP CYCLE /Trolling.

Group 27 are just shy of 100 (Say 95)
Group 29 are just over 100 (Say 105)
Group 31 are around 130

A Size 4D is 230
An 8D is even bigger

These can be had in DEEP CYCLE if you look for them but they are big and heavy.

So how can we get 230 amp hours in a package that will NOT give us a hernia (Ok, a 4D won't give me a hernia, Do not know about you)

Simple, a pair of GC-2 Golf car batteries, Specifically DEKA G-20s, also give you the exact same 230 amp hours that the 4D gives.

And on that note: I have used 12 volt batteries that weighed close to a thousand pounds and make a colleciton of all the above put together looks small. .

The bit attraction of six volt GC-2:
COST: they are very very popular, Golf courses from sea to sea and beyond buy them by the pallet load for their golf cars This means that the unit cost is lower.

WEIGHT: they weigh almost exactly half what a 4D weighs.. Though I can carry a 4D wrangling it onto the battery tray. NOT going to happen.

And when you put two six volt batteries in series, You get one 12 volt battery.

So what is best: Most likely two 12 volt batteries each of which is made up of two six volt batteries in series
(Think of each six volt pair as though it were a 4D, Would you want a 4D where half was new and half was years old? See how that question went POOF (Can I replace just one of 'em)

Home is where I park it!
wa8yxm is offline   Reply With Quote
Old 11-23-2014, 03:17 PM   #3
Senior Member
Papa_Jim's Avatar
Outdoors RV Owners Club
Join Date: Oct 2009
Location: Manitoba,Canada
Posts: 2,667
I just had an operation to fix my belly button hernia. I don't think I'll be lifting a 4D battery any time in the rest of my lifetime.

I keep hearing people say that 6V golf cart batteries are the way to go. But the battery tray in my coach isn't tall enough, so I'm stuck using two 4D batteries. I added two more 4D batteries up front. So, I figured I have 200 X 4 = 800 Amp hrs. If the 4D battery will actually give me 230 amp hrs., then even better. 230 X 4 = 920 Amp hrs.

All I need to do now is figure out how to hook up solar.

Jim & Kate
2016 Creekside 23RKS
2014 Ram 1500 4X4 Eco Diesel
Canada, eh?
Papa_Jim is offline   Reply With Quote
Old 11-23-2014, 07:32 PM   #4
Senior Member
SKP Kirk's Avatar
Join Date: May 2010
Location: Part-time out of Bass Lake Retirement Community
Posts: 328
I prefer pairs of 6V, golf cart batteries, but like Jim they were too tall for the space where my batteries were stored. The difference is not huge but it is significant in my opinion.
Good Travelin! Kirk
Full-time 11 years, now part-time.
Kirk & Pam's Great Adventure!
SKP Kirk is offline   Reply With Quote
Old 11-24-2014, 01:27 AM   #5
Senior Member
r___r's Avatar
Vintage RV Owners Club
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Mar 2013
Location: Nor Cal
Posts: 1,325
Subscribing for future reference.

Great information Wa8yxm.

Thanks for posting,

Rich & Patricia
00 F350 7.3L___89 Terry Resort 25.5
___03 Klamath 30hp

r___r is offline   Reply With Quote
Old 11-24-2014, 03:06 AM   #6
Senior Member
wa8yxm's Avatar
Damon Owners Club
Workhorse Chassis Owner
Join Date: Mar 2009
Posts: 23,955
Thank you Rick, have spent quite a bit of time researching things... (I actually like doing that).

As I said though when you say Which is better 12s or 6s,, The problem is 12's come in different sizes, 12 volt peas, or 12 volt watermelons, makes a difference.
Home is where I park it!
wa8yxm is offline   Reply With Quote
Old 11-24-2014, 07:23 AM   #7
Moderator Emeritus
Gary RVRoamer's Avatar

Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 18,640
It also makes a big difference whether those 12v's are deep cycles (like the GC2 6v's are), or vanilla car or marine batteries. The voltage itself is irrelevant.

For many people, 6v is a convenient shorthand for a high amp-hour deep cycle battery, because the 6V's they are talking about are the GC2 golf cart 6v battery. Other types/sizes of 6v would not be anywhere near as good, but those are mostly specialty types that aren't readily available anyway.

Last, the much higher production volumes of the GC2 6v golf cart battery generally make it less expensive than the equivalent 12v deep cycle. I've written an article of choosing a battery for an RV - it's available on another site, at Choose battery

Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
Gary RVRoamer is online now   Reply With Quote


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Starting Batteries Joedean Class A Motorhome Discussions 6 12-12-2014 01:21 PM
Coach Batteries kketterling Monaco Owner's Forum 11 11-03-2014 05:03 PM
Maybe Bad Batteries - Getting Them Tested Sky_Boss RV Systems & Appliances 1 09-05-2014 03:39 PM
House Batteries cooked on us! RV1597 RV Systems & Appliances 13 07-05-2014 01:26 PM
House batteries making buzzing noise Furniss Class A Motorhome Discussions 10 06-21-2014 10:46 AM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:21 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.