Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  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 12-28-2014, 08:32 AM   #1
Junior Member
 
Join Date: Dec 2014
Posts: 7
2nd Coach Battery Bank

I've got 2 new 6V golf cart batteries that I'd like to add to my Winnebago 27N. They would fit nicely in the front pass compartment about 2-3ft back from the standard coach/house & chassis batteries. Anyone familiar w the procedure for adding a 2nd battery bank & potential issues/ problems?
__________________

__________________
GGrab 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 12-28-2014, 08:58 AM   #2
Senior Member
 
wb7auk's Avatar
 
National RV Owners Club
Join Date: Feb 2012
Location: Spokane Valley, Wa
Posts: 1,987
Quote:
Originally Posted by grabowski972 View Post
I've got 2 new 6V golf cart batteries that I'd like to add to my Winnebago 27N. They would fit nicely in the front pass compartment about 2-3ft back from the standard coach/house & chassis batteries. Anyone familiar w the procedure for adding a 2nd battery bank & potential issues/ problems?
As long as you have a lot of ventilation in the compartment you plan to
install the batteries in other wise you will be building a bomb.
Use 4/0 cable to make all your connections which will be connecting the 6 volt new batteries in series and then parallel them to the 12 volt point of the other batteries.
Depending on your charger you may have to reset it for the total battery capacity the new system has.
__________________

__________________
Art
1999 Trade Winds 7371 Cat 3126B w/current upgrades
1990 D 250 Dodge Ram Cummins Turbo
wb7auk is offline   Reply With Quote
Old 12-29-2014, 09:03 AM   #3
Member
 
CaptainJerry's Avatar
 
Newmar Owners Club
Workhorse Chassis Owner
Join Date: Dec 2011
Location: SW VA
Posts: 87
You did not indicate, but I will assume that your existing house battery bank is two 6 volts. Apparently you want to add two more 6 volt batteries to have a total of four 6 volt batteries for the house connected in series. Correct?

My understanding is that a group of however many batteries connected in series should have all of the connecting cables between batteries the same length to avoid making one or more batteries work harder.

I have a similar situation in that I have no more room in the compartment where the house batteries are located to add another two 6 volt batteries to add to the series. I would have to run cable much longer than the existing connecting cables to reach another compartment where I could position another two batteries, and choose not to do that and have an unbalanced system of batteries.
__________________
Jerry, Georgia (DW) and Bailey (yellow Lab)
2003 Mountain Aire 3778 8.1 L, Workhorse W-22
2015 GMC Canyon All Terrain 4 down
CaptainJerry is offline   Reply With Quote
Old 12-29-2014, 09:45 AM   #4
Senior Member
 
wb7auk's Avatar
 
National RV Owners Club
Join Date: Feb 2012
Location: Spokane Valley, Wa
Posts: 1,987
My understanding is that a group of however many batteries connected in series should have all of the connecting cables between batteries the same length to avoid making one or more batteries work harder.

I have a similar situation in that I have no more room in the compartment where the house batteries are located to add another two 6 volt batteries to add to the series. I would have to run cable much longer than the existing connecting cables to reach another compartment where I could position another two batteries, and choose not to do that and have an unbalanced system of batteries.[/QUOTE]

To avoid a system unbalance the connecting cables need to be large to avoid voltage and current drops.
The reason I stated to use 4/0 cable which will have almost no loss at these voltage and current demands for the distance being used.
__________________
Art
1999 Trade Winds 7371 Cat 3126B w/current upgrades
1990 D 250 Dodge Ram Cummins Turbo
wb7auk is offline   Reply With Quote
Old 12-30-2014, 07:28 AM   #5
Junior Member
 
Join Date: Dec 2014
Posts: 7
Thanks, My existing bank is 2 6v. The compartment is only 2-3ft back & I can isolate & vent them so sounds like it will be ok if I use the 4 wire. Is there any issues with the charger as far as adding the additional batteries?
__________________
GGrab is offline   Reply With Quote
Old 12-30-2014, 07:53 AM   #6
Senior Member
 
wb7auk's Avatar
 
National RV Owners Club
Join Date: Feb 2012
Location: Spokane Valley, Wa
Posts: 1,987
Quote:
Originally Posted by grabowski972 View Post
Thanks, My existing bank is 2 6v. The compartment is only 2-3ft back & I can isolate & vent them so sounds like it will be ok if I use the 4 wire. Is there any issues with the charger as far as adding the additional batteries?
Make sure you use 4/0 gauge wire NOT 4 gauge.
What make and model of charger do you have presently?
With your new system your charger should be set to handle 100 amps
charge however if your charger is only able to charge less it will just take
longer to recharge the batteries.
Make sure you have plenty of fresh air venting the new batteries so you do not
end up with a H Bomb waiting to go off.
__________________
Art
1999 Trade Winds 7371 Cat 3126B w/current upgrades
1990 D 250 Dodge Ram Cummins Turbo
wb7auk is offline   Reply With Quote
Old 12-30-2014, 12:37 PM   #7
Senior Member
 
tderonne's Avatar
 
Join Date: Dec 2003
Location: Motor City, Mich
Posts: 2,303
Many threads here at irv2.com about adding batteries. Lots of people have 4 6-volt batteries under the step in Winnebagos. I gathered some photos in this thread:

Battery additions and upgrade
__________________
Tim.

tderonne is offline   Reply With Quote
Old 12-30-2014, 02:08 PM   #8
Senior Member
 
Join Date: Feb 2010
Posts: 4,493
Wire length does NOT need to be the same as this is DC!

Just make sure it is good size for low resistance.

Some REQUIREMENTS...
1. Proper overcurrent protections at BOTH ends of the hot sides if the connecting cables go through any holes( batteries not in same place).
2. Be sure all connections are good and solid.
3. Insure easy to turn off or disconnect for service.
4. Be sure proper ventelation for gassing.
5. Proper battery trays to support the weight and contain any spillage.
__________________
Tony & Lori
1989 Country Coach Savannah SE
TQ60 is offline   Reply With Quote
Old 12-30-2014, 02:46 PM   #9
Senior Member
 
rodz's Avatar
 
Join Date: Nov 2008
Location: Michigan
Posts: 710
I have 2 12V batteries. Would there be a problem adding 2 6V to what I have?
__________________
2009 Ventana 3933
rodz is offline   Reply With Quote
Old 12-30-2014, 03:03 PM   #10
Senior Member
 
wb7auk's Avatar
 
National RV Owners Club
Join Date: Feb 2012
Location: Spokane Valley, Wa
Posts: 1,987
Quote:
Originally Posted by rodz View Post
I have 2 12V batteries. Would there be a problem adding 2 6V to what I have?
If your 12 volt batteries are deep cycle and not the marine / starting type
and you series the 6 volt batteries then parallel that bank to the others.
Mixing deep cycle and regular batteries should not be done.
__________________
Art
1999 Trade Winds 7371 Cat 3126B w/current upgrades
1990 D 250 Dodge Ram Cummins Turbo
wb7auk is offline   Reply With Quote
Old 12-30-2014, 09:28 PM   #11
Senior Member
 
Join Date: Mar 2009
Location: Florence, Oregon
Posts: 227
It is not good practice to mix battery types .
__________________
Ed & Lynn on the Oregon Coast
2013 Tiffin Allegro 34TGA
2006 Scion xA toad
Ed_G is offline   Reply With Quote
Old 12-30-2014, 10:54 PM   #12
Senior Member
 
vsheetz's Avatar


 
Fleetwood Owners Club
Ford Super Duty Owner
Join Date: Jun 2012
Location: SoCal
Posts: 11,799
I have a pair of six volt batteries in the original under steps location. Plus an added pair in a storage compartment on the other side rearward. Heavy wire connecting the two pairs. Inverter and solar charger connected to the added second pair. Works fine.

Only issue encountered is if wanting to connect a shunt for a Trimetric or similar meter there is not one connection point that flows all current in/out the battery bank.
__________________
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.
vsheetz is offline   Reply With Quote
Old 01-02-2015, 05:29 PM   #13
RRR
Senior Member
 
Ford Super Duty Owner
Join Date: Mar 2009
Posts: 353
Here are two sites that may help answer your questions.

SmartGauge Electronics - Interconnecting multiple batteries to form one larger bank

The 12volt Side of Life (Part 1) there is two pages so read both.
__________________

__________________
RRR is offline   Reply With Quote
Reply

Tags
battery



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
Unique type of Battery Failure teddyu Class A Motorhome Discussions 10 09-27-2014 10:29 AM
Coach Battery Question soundwve Vintage RV's 1 04-06-2014 08:40 PM
Question about building a battery bank and using 24v system Jasper7821 RV Systems & Appliances 42 02-13-2014 04:45 PM
Cleaning Coach Battery Terminals Alan Wilson Class A Motorhome Discussions 15 02-10-2014 06:49 PM
Coach battery replacement bill6525 Winnebago Industries Owner's Forum 4 11-21-2013 07:09 PM

» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:57 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.