Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-28-2008, 06:59 PM   #1
2 Rivet Member
 
2008 25' Safari SS SE
Longview , Washington
Join Date: Aug 2007
Posts: 48
Images: 2
Batteries and converters

I would like to install a second battery on my 2005 22 foot Safari LS. I was wondering how to mount it, and the best way to wire it with my other battery. Any help would be appreciated.

Matt
__________________

__________________
msmst25 is offline   Reply With Quote
Old 05-28-2008, 07:22 PM   #2
Rivet Master
Commercial Member
 
lewster's Avatar
 
Vintage Kin Owner
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 7,282
Quote:
Originally Posted by msmst25
I would like to install a second battery on my 2005 22 foot Safari LS. I was wondering how to mount it, and the best way to wire it with my other battery. Any help would be appreciated.

Matt
Hi Matt,

IIRC, you have a single group 24 battery up front on the tongue. Problem is that when you add another battery, have potential charging challenges because both batteries are not of the same age and charge retention rate. This leads to uneven charging.

Basically, you need to either get a larger external box fabricated, or go with a sealed, vented box for the inside of the trailer as close to the existing battery as possible. You then connect them in parallel, or (+) to (+) and (-) to (-) with at least '0' AWG cables.

I would also change out your converter to a modern 3-stage unit that will keep your batteries much happier than with the stock converter.

While you're at it, why not look into AGM batteries. They do not out-gas like liquid cell batteries (the kind you have to fill) and last longer with better draw-down characteristics. Plus, they re-charge faster due to their lower internal resistance.

Now that I've probably thoroughly confused you.......try the search function for several of the many posts on selecting the proper batteries for your trailer.

If you can't find answers....just ask away!
__________________

__________________
Lew Farber...ABYC Certified Master Marine Electrician...RVIA Certified Master Tech ...AM Solar Authorized Installation Center...AIRSTREAM Solar & Electrical Specialist...Micro Air 'Easy Start' Sales and Installations
lewster is online now   Reply With Quote
Old 05-28-2008, 07:30 PM   #3
Rivet Master
 
1975 29' Ambassador
Reno , Nevada
Join Date: May 2003
Posts: 1,351
If you don't have a proper battery compartment for a second battery, you will need to create one. Folks get all kinds of creative on this problem including using AGM's in unvented inside compartments which is contrary to code.

Easiest is to install another 12v battery just like the one you have and wire it in parallel. Some will try to give you a spiel about 6v in series and true deep cycle - see Configuration for some reality on these ideas.
__________________
bryanl is offline   Reply With Quote
Old 05-28-2008, 07:33 PM   #4
Rivet Master
 
Jim Foster's Avatar
 
1965 17' Caravel
1983 27' Excella
Walnut Grove/Laguna Woods , California
Join Date: Jun 2004
Posts: 1,615
Send a message via Yahoo to Jim Foster
Never mix old and new batteries, or batteries of a different type. Either of these conditions will cause improper charging, drain from one battery to the other, and premature battery failure. Not great on the charger either.

Best if you mount the batteries side by side avoiding long cables attaching the batteries together.
__________________
Jim Foster is offline   Reply With Quote
Old 05-28-2008, 07:42 PM   #5
Well Preserved

 
1993 21' Sovereign
Colfax , North Carolina
Join Date: Jun 2003
Posts: 20,193
Is there a reason you can't simply go get a plastic battery tray and cover, like in a boat, and put it on the tongue behind the LP tanks?
__________________
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
Terry
overlander63 is offline   Reply With Quote
Old 05-28-2008, 08:06 PM   #6
Rivet Master
 
Jim Foster's Avatar
 
1965 17' Caravel
1983 27' Excella
Walnut Grove/Laguna Woods , California
Join Date: Jun 2004
Posts: 1,615
Send a message via Yahoo to Jim Foster
Quote:
Originally Posted by overlander63
Is there a reason you can't simply go get a plastic battery tray and cover, like in a boat, and put it on the tongue behind the LP tanks?
Not at all as long as tongue weight is not an issue. I had a single 12v so mounted with such a box, sitting on framework, in a frame made of 3/4 inch angle. I took that loose, turned it 90 degrees, moved it to one side, made and installed another 3/4 inch angle framework next to it. Then installed two 6v Trojan 105s in plastic battery boxes with a hold-down for the whole works.
I also had to move the LP tanks about two inches forward.

Very careful measuring is needed to assure proper fit and clearance.

This setup has worked very well for us. Lots of battery power, no charging problems.
__________________

__________________
Jim Foster is offline   Reply With Quote
Reply


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
curious about converters Annemac Batteries, Univolts, Converters & Inverters 6 08-01-2007 12:12 PM
Converters / univolts 101 59er Batteries, Univolts, Converters & Inverters 7 07-29-2007 12:40 PM
Atwood Converters to replace Univolt????? leefields Electrical - Systems, Generators, Batteries & Solar 2 05-08-2006 10:27 PM
Converters On Sale 68 Overlander Commercial Listings 18 06-26-2005 09:05 PM
When did Catalytic Converters Show Up? swebster Mechanics Corner - Engines, Transmission & More... 2 10-07-2003 06:07 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:54 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

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