Go Back   iRV2 Forums > MOTORHOME FORUMS > MH-General Discussions & Problems
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 03-14-2013, 09:52 AM   #1
Senior Member
Camper Ken's Avatar
Join Date: Oct 2012
Location: Oregon
Posts: 362
6 volt house batteries to start generator?

I considering switching out my two 12volt marine/rv house batteries for two 6volt true deep cycle batteries like the Trojan T-105 or equivalent Interstate batteries.

Is it ok to use 6volt deep cycle batteries to start a generator? My coach has an Onan 5500 watt gen.

Camper Ken 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 03-14-2013, 10:08 AM   #2
Registered User
KSCRUDE's Avatar
Join Date: Aug 2012
Location: The Land Of Oz RVM17
Posts: 1,592
Yes they will start the geny but you would have to rewire everything in a series instead of the parallel you have now. You can still start the geny with just one twelve volt battery if one goes bad, not so with just one 6 volt as it takes two six volts to make 12 volts. My 13 3209 Baystar has 2 12 volts and they work great and I will never go to six volts as no need. All semi trucks back in the sixties and seventies had 4 six volt batteries wired to put out 12 volts. Since the eighties they have all gone to twelve volt batteries and some only use three batteries, but I still spec or change mine to 4 just for extra power. No way to use 3 six volt batteries to put out 12 volts but they can use 3 twelves and it saves them money!

KSCRUDE is offline   Reply With Quote
Old 03-14-2013, 04:28 PM   #3
Senior Member
Camper Ken's Avatar
Join Date: Oct 2012
Location: Oregon
Posts: 362
Thanks for sharing your thoughts and opinion.

I also have a 2013 model 3209.

I'm switching over to 6 volt true deep cycle batteries because we dry camp the majority of the time. The factory installed 12 volt batteries on our Bay Stars work very well but don't offer the same capacity for dry camping. They're "hybrid" batteries, made for a moderate amount of deep cycling and for starting. They are ideal for a marine application, and that's exactly what it says on my 12 volt Interstate batteries ... "Marine/RV". I read your post to my other battery question, so I'm sure you're aware of this.

We installed a solar panel and are somewhat frugal with our electric use when dry camping and would rather not run the generator on a daily basis if we can avoid it.

I switched to 6 volt true deep cycle batteries on my previous motorhome and it definitely made a difference when dry camping.

Thanks again.
Camper Ken is offline   Reply With Quote
Old 03-15-2013, 08:46 AM   #4
Moderator Emeritus
Gary RVRoamer's Avatar

Fleetwood Owners Club
Freightliner Owners Club
Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 16,436
You can get quality 12v deep cycle batteries with capacity similar to the 6v golf cart batteries. For example, a Group 27 12v deep cycle from Trojan, the model 27TMH battery, produces 115 amp-hours, so a pair is 230, just like a pair of 6v golf cart deep cycles. The slightly larger group 30 Trojan 30XH produces 130 AH each, for a total of 260. These are true deep cycles, not marine hybrids.

However, the Trojan 12v's will probably cost you more than the 6v golf cart batteries, so it may be worthwhile to re-wire for 6v series operation.
Gary Brinck
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL
Gary RVRoamer is offline   Reply With Quote

batteries, generator

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

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:56 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.