Thread Tools Search this Thread Display Modes
Old 01-20-2008, 07:30 PM   #1
2 Rivet Member
2007 22' International CCD
Tunbridge , Vermont
Join Date: Jan 2008
Posts: 23
Adding 2nd Battery--Any problems?

I just bought a new 22-ft International, primarily for myself on multiple-day flyfishing trips and week-long shooting competition trips. My former 32-ft Excella had two batteries but the new rig has one.

Has anybody experienced building a special box to add a second battery in parallel with the factory-supplied battery? My new unit does have the solar charging system and I do carry a 1000-watt semi-silent Honda generator for recharging, but a single battery doesn't last long on a week-long trip in the hinterlands.

Would there be any problems with the Airstream charging system? If wired in parallel, it wouldn't it be just iike having ONE battery with larger capacity?

Pete in Vermont

Pete Vermont is offline   Reply With Quote
Old 01-20-2008, 07:55 PM   #2
Well Preserved

1974 31' Sovereign
1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 19,570
two smaller batteries would be like one bigger one. Depending on how much sunlight you are going to be involved with, it may be bettr to get the largest AGM battery that will fit in the tray, and a good-sized solar panel. Cost would probably be similar if you have someone else do the work, and you wouldn't have to worry about containing and venting the second battery.
(BTW, AGM batteries don't vent hydrogen like a wet acid battery).

Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
overlander63 is offline   Reply With Quote
Old 01-20-2008, 09:15 PM   #3
3 Rivet Member
Kajtek1's Avatar
1965 22' Safari
Currently Looking...
Orinda , California
Join Date: Dec 2007
Posts: 217
2 different (different age) batteries are not recommended to be wired together, because having different voltage the worse will pull the better one down.
Saying that I never had any problem for running 2 different batteries while in constant use of discharging/charging. In the past when I had trailer in the storage 1/2 from the lake, I put older motorcycle battery in it just for the brakes and water pump on those short trips from the site to the storage.
Than driving SUV for weekends I was bringing big battery charged at home, that I put under the trailer and hooked up to the small battery with alligator clips. On longer stays, I was taking the big battery into SUV when we drove somewhere and was charging it there with cigarette plug adapter.
Worked as a charm. Never had a need for generator at those times. Even at 110F spending few hours in the water made AC unnecessary.
Kajtek1 is offline   Reply With Quote
Old 01-20-2008, 09:40 PM   #4
Rivet Master
davidz71's Avatar
1986 25' Sovereign
Southern Middle , Tennessee
Join Date: Mar 2002
Posts: 3,119
Images: 23
I'm contemplating just such an addition to my '86 Sovereign. I have a metal box sitting between the tongue frame rails now for tools, ramps, etc. I plan on having it removed and a deeper as well as a slightly taller box welded in. It will be large enough to house two Trojan 27TMH 12 volt batteries. Since the battery lug on the positive post has cracked, I intend to replace both cables after the box is built and welded in. This probably won't be done until the middle of the summer. Like you, I have solar on the roof and a generator should I need it. It would be nice to have that extra cushion of battery power since the trailer is without shore power the month of April and for several months starting in September.

AIR #0078
'01 2500hd ext. cab, 8.1 litre gas, 5 sp. Allison auto
3.73 rear end
Mag-Hytec rear diff cover
Amsoil Dual by-pass oil filtration system
Amsoil synthetics all around
265 watt AM Solar, Inc. system
davidz71 is offline   Reply With Quote
Old 01-20-2008, 09:51 PM   #5
4 Rivet Member
wbrownrr's Avatar
2002 22' International CCD
San Luis Obispo , California
Join Date: May 2005
Posts: 415
I've done this very thing to our 22' CCD. I had a new battery tray fabricated at a local muffler shop which holds two group 24 batteries. I give credit for the idea to rseagle, who has posted often on this forum and has some excellent pictures of his set up. Search the following threads, although there are others discussing the addition of batteries:

Upgrade to 2 x 6v Batteries on 2005 Int'l 22'


2nd Battery?

Hope this is helpful.
2002 22' CCD
2008 Dodge Ram 1500 5.7L Hemi
wbrownrr is offline   Reply With Quote
Old 01-23-2008, 11:18 PM   #6
2 Rivet Member
2007 22' International CCD
Tunbridge , Vermont
Join Date: Jan 2008
Posts: 23
Thanks for the comments folks. I think the way to go is to fabricate a bracket, weld it on and install two AGM batteries. During a few years with a 20 ft "other brand" trailer i had one battery and it was always running down in the middle of a rainstorm or other time when going outside to rig the generator was difficult. Nearly ALL my use is boon-docking, so dependable battery life is important.

HAS ANYBODY also tried upgrading the two 20# propane tanks on these smaller AS models to 30# bottles? Is there room and what about the affect on the tongue weight, assuming I'd also go with two batteries?
Pete in Vermont

AIR 26504
WBCCI 2980
2007 22 ft International CCD
2007 Tahoe 4X4
Hensley Arrow
[prior AS: 1986 Excella 32 ft ]

Whoever said "Money can't buy happiness" never owned a custom made bamboo fly rod.
Pete Vermont is offline   Reply With Quote
Old 01-24-2008, 12:28 AM   #7
3 Rivet Member
Kajtek1's Avatar
1965 22' Safari
Currently Looking...
Orinda , California
Join Date: Dec 2007
Posts: 217
I had originally 30 lb propane tanks on my Safari, but I am going with 20 lb now. You might find a space for bigger tanks and probably batteries as well on your tongue and you can control the tongue weight by moving heavy items to the rear, but having most of the weight away from the axles will make the set more prone to proportioning (?) and fishtailing.
Hard decision.
Kajtek1 is offline   Reply With Quote
Old 01-24-2008, 02:38 AM   #8
Rivet Master
rseagle's Avatar
2004 22' International CCD
Spotsylvania , Virginia
Join Date: Mar 2004
Posts: 663
Images: 33
Deka 12vdc 212 Ah Deep Cycle


Here is what I did for my 22 footer.
Attached Thumbnails
Click image for larger version

Name:	CCD 212 AH Battery Bracket.jpg
Views:	100
Size:	98.4 KB
ID:	53096   Click image for larger version

Name:	Finished Battery Cover 1 small.JPG
Views:	90
Size:	79.7 KB
ID:	53098  

2004 22' CCD
1997 F-150
AIR# 4749
ex WBCCI# 1430
rseagle is offline   Reply With Quote
Old 01-24-2008, 03:20 AM   #9
1 Rivet Member
2005 28' International CCD
Stanwood , WA
Join Date: Oct 2004
Posts: 11
Send a message via MSN to Bill M Send a message via Skype™ to Bill M
Yes, one Bat would not last the night in our 05 28''CCD. We simply strapped a battery box over the metal box with a Group 31 yellow top Optima ( already had the battery) and it just fit behind the propane locker. We also added a 1000 W Yahama lightweight generator (converted to propane since we tow with a diesel Excursion. This gives us some AC when we need it and charges the batteries. We don't reall have enough battery power to use a functional inverter. Our old 1976 25' had two 4D AGM's over the wheel well and a 1500W inverter charger.
Our new system worksfine, just doesn't support the AC, which iswn't too important for us WA/MT travelers.

Bill M
05' CCD 28 foot# 2905
04 Excursion Dsl.
7 kitties
Stanwood WA & Whitefish Mt
Bill M is offline   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
Adding a Second Battery davesid 2002 Safari 6 12-15-2014 02:16 PM
2nd Battery? cyclesurfer 2002 - 2005 International 19 02-27-2007 09:20 AM
Adding 2nd battery to 16 CCD? smccollister 1997 - 2004 Bambi 33 01-21-2007 07:33 PM
2nd Battery/7-way connector wbrownrr Electrical - Systems, Generators, Batteries & Solar 8 05-19-2005 05:22 PM
Adding a second battery... drboyd Electrical - Systems, Generators, Batteries & Solar 3 07-28-2003 12:45 PM

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 10:06 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.