Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-09-2010, 04:12 PM   #1
Formally 'tiger'
 
GeocamperAS's Avatar
 
1974 Argosy 28
1978 Argosy Minuet 6.0 Metre
Wauwatosa , Wisconsin
Join Date: Oct 2010
Posts: 526
Images: 37
adding a second battery

I plan to add a second battery with a marine switch. (off - 1 - 2 - both)
I plan to use one at a time when camping.
My question is, when towing is it ok to charge both at the same time or one at a time?
__________________

__________________
GeocamperAS is online now   Reply With Quote
Old 11-09-2010, 06:01 PM   #2
Rivet Master
 
SteveH's Avatar

 
2008 34' Classic S/O
Common Sense , Texas
Join Date: Sep 2007
Posts: 4,140
Technically, it will work either way. But, with the two in parallel, they won't get much of a charge because it will be devided between the two, and with the resistance in the wire from the front of the tow vehicle back added in, it's even worse.

So, it would be better to charge one, and then the other assuming you have far enough to drive.
__________________

__________________
Regards,
Steve

"The further a society drifts from the truth, the more it will hate those that speak it." George Orwell

'08 34' SO, '12 Ram 2500 4X4, Big 6 cylinder sludge burner.
SteveH is offline   Reply With Quote
Old 11-10-2010, 05:07 AM   #3
Formally 'tiger'
 
GeocamperAS's Avatar
 
1974 Argosy 28
1978 Argosy Minuet 6.0 Metre
Wauwatosa , Wisconsin
Join Date: Oct 2010
Posts: 526
Images: 37
Do newer AS have two batteries? Do they use a switch? Or is there a better way of adding a second battery?
__________________
GeocamperAS is online now   Reply With Quote
Old 11-10-2010, 06:06 AM   #4
Rivet Master
 
SteveH's Avatar

 
2008 34' Classic S/O
Common Sense , Texas
Join Date: Sep 2007
Posts: 4,140
Most newer Airstreams have two batteries and they don't get much of a charge when driving.
__________________
Regards,
Steve

"The further a society drifts from the truth, the more it will hate those that speak it." George Orwell

'08 34' SO, '12 Ram 2500 4X4, Big 6 cylinder sludge burner.
SteveH is offline   Reply With Quote
Old 11-10-2010, 07:22 AM   #5
Rivet Master
 
Zeppelinium's Avatar

 
1975 31' Sovereign
1973 27' Overlander
1977 23' Safari
Palmer Lake , Colorado
Join Date: Oct 2005
Posts: 3,818
Send a message via Skype™ to Zeppelinium
get a quiet generator!

Another caution when using two [lead-acid] batteries: if they are used in parallel, their must be very closely matched. You cannot use an older battery with a newer one--the new one will very rapidly deteriorate to the condition of the old one.

If you have two new batteries and charge (or discharge) them separately, you have to keep very careful track of the charge and discharge cycles if you intend to parallel them at other times. If they get out of whack, they both head south.

My recommendation is start with two new batteries and keep them in parallel all the time. This sort of defeats a possible benefit of using one at a time, where you get a heads up when you've used half your juice, but I guarantee you will quickly ruin the batteries if you sometimes use them separately and sometimes in parallel. It's just too hard to keep up with them.

I've added a second battery to two of my Airstreams and then a year or two later got rid of the second one and got a Honda 2000i instead. You will be far ahead of the game to have a single battery [that's good for 2-4 days] and a generator, than having two batteries to get you through a week. Plus, you'll be able to run a microwave! The weight of a second battery is also a problem, especially if you have a longer Airstream. Put the generator in the back of the tow vehicle.

Zep
Zeppelinium is offline   Reply With Quote
Old 11-10-2010, 10:07 AM   #6
Formally 'tiger'
 
GeocamperAS's Avatar
 
1974 Argosy 28
1978 Argosy Minuet 6.0 Metre
Wauwatosa , Wisconsin
Join Date: Oct 2010
Posts: 526
Images: 37
I would be concerned that a generator would be to loud and get other campers mad at me.
__________________

__________________
GeocamperAS is online now   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
Adding Battery? Roadrunner Batteries, Univolts, Converters & Inverters 1 10-19-2009 08:24 PM
adding battery bikeguy Batteries, Univolts, Converters & Inverters 4 07-07-2008 10:42 PM
Help - Adding Battery Mookie Electrical - Systems, Generators, Batteries & Solar 3 04-10-2006 04:32 PM
Adding a battery (or two) DocBear Electrical - Systems, Generators, Batteries & Solar 2 03-30-2006 08:15 PM
Adding a second battery... drboyd Electrical - Systems, Generators, Batteries & Solar 3 07-28-2003 12:45 PM




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

RV & Travel Trailer Communities

Our RV & Travel Trailer sites encompasses virtually all types of Recreational Vehicles, from brand-specific to general RV communities.

» More about our RV 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 2002-2012 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:49 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.

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

Airstream News Delivered to your Email!

Stay up-to-date with Airstream news in your inbox!

unsusbcribe at anytime with one click

Close [X]