RV Trip Planning Discussions

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 06-26-2019, 02:44 PM   #1
Junior Member
 
Join Date: Sep 2016
Posts: 7
Battery disconnect on or off when on shore power

I have been wondering: does it make any difference if you leave the battery disconnect switch on or off when you are plugged into shore power?
__________________

Brutas 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 06-26-2019, 02:49 PM   #2
Senior Member
 
Tha_Rooster's Avatar
 
Join Date: Aug 2008
Location: Georgia
Posts: 5,595
If you turn it off nothing works no matter if itís plugged including fridge. If your going to leave it turn it off.
__________________

__________________
2007 Fleetwood Revolution LE 40V
Tha_Rooster is offline   Reply With Quote
Old 06-26-2019, 02:50 PM   #3
Senior Member
 
Join Date: Oct 2017
Location: Elk Grove CA
Posts: 641
It may depend on your make/model/year, but, in most cases, your battery switch needs to be on in order for your converter/charger (or inverter/charger as the case may be) to be online. This means that, if it's off, you won't be charging and won't have 12V power to your lights, etc.
__________________
BobC
2002 Itasca Suncruiser 35U
BCam is offline   Reply With Quote
Old 06-26-2019, 02:52 PM   #4
Senior Member
 
Join Date: Nov 2015
Posts: 9,698
Battery disconnect is for Storage ....OFF in storage
Otherwise ON


AC Power provides means of charging/maintaining battery
__________________
Is it time for YOUR medication or MINE
2007 Dodge 3500 w/Tractor Motor & NUWA 5vr
US NAVY---USS Decatur DDG-31
Old-Biscuit is offline   Reply With Quote
Old 06-26-2019, 08:31 PM   #5
Senior Member
 
Outbound's Avatar
 
Join Date: Jun 2012
Location: NorCal
Posts: 1,250
Ditto for on unless in storage.
__________________
Outbound
2002 Monaco Executive 500 ISM
2004 GMC 2500HD 4X4
Outbound is offline   Reply With Quote
Old 06-26-2019, 08:48 PM   #6
Senior Member
 
Join Date: Jun 2017
Posts: 1,537
If you "disconnect" the batteries when plugged into SP they will not charge. All the DC loads will work though as the converter will supply the DC buss.

A good rule of thumb is to leave the batteries connected at all times EXCEPT when stored with no SP connected.
tfryman is offline   Reply With Quote
Old 06-26-2019, 09:52 PM   #7
Senior Member
 
FIRE UP's Avatar


 
Join Date: Dec 2009
Location: Out there, somewhere
Posts: 7,689
Quote:
Originally Posted by tfryman;4838212[B
]If you "disconnect" the batteries when plugged into SP they will not charge.[/B] All the DC loads will work though as the converter will supply the DC buss.

A good rule of thumb is to leave the batteries connected at all times EXCEPT when stored with no SP connected.
"....they will not charge...."
Wellllllllll, not exactly. It all depends on how the system was built and, whether or not it's a diesel coach or a gas and, what kind equipment is installed. For instance, our coach, an '04 Itasca Horizon 36GD with the CAT C-7 330HP, DOES charge the house (and chassis) batteries with the House battery switch in the OFF position. Now, again, it's a diesel unit. But, I cannot speak for gas coaches as, it's been over 8 years since we've had one and, I cannot remember if it even had a house battery cut-off switch.
Scott
__________________
2004 ITASCA HORIZON 36GD, 2011 GMC Sierra 1500 4x4 Toad '08 GL 1800 Gold Wing
Retired-29.5 yrs, SDFD, Ham - KI6OND
Me, Karla and the Sophie character, (mini Schnauzer)
FIRE UP is offline   Reply With Quote
Old 06-26-2019, 11:09 PM   #8
Senior Member
 
Join Date: Jul 2014
Posts: 17,550
Its not gas or diesel, in most cases, its Inverter/ charger OR converter/charger.

Inverter chargers charge thru the large inverter cables, often hooked directly to the batteries, bypassing the battery disconnect switch.

With converter/chargers, they power the 12 volt system at the 12 volt fuse/breaker center and back feed thru the disconnect to the battery for charging.
twinboat is offline   Reply With Quote
Old 06-27-2019, 01:54 AM   #9
Senior Member
 
AKIQPilot's Avatar
 
Join Date: Mar 2017
Location: Alaska in Summer Snow Birds in Winter
Posts: 1,415
Quote:
Originally Posted by FIRE UP View Post
"....they will not charge...."
Wellllllllll, not exactly. It all depends on how the system was built and, whether or not it's a diesel coach or a gas and, what kind equipment is installed. For instance, our coach, an '04 Itasca Horizon 36GD with the CAT C-7 330HP, DOES charge the house (and chassis) batteries with the House battery switch in the OFF position. Now, again, it's a diesel unit. But, I cannot speak for gas coaches as, it's been over 8 years since we've had one and, I cannot remember if it even had a house battery cut-off switch.
Scott
Yep. It all depends on what brand and model coach you have. Our gas powered Winnebagos also charge the batteries and run all the systems even with the coach battery disconnect switch in the Off position.

There are just too many different configurations to give a perfect answer to the OP. Some coaches need the coach battery switch in the on position when plugged in to shore power and some don't.

Neither of my coaches need the coach battery switch on to operate properly when plugged in to shorepower. .
__________________
Tom and Sherry W.
06 Winnebago Adventurer 38J Workhorse W24 Lots of motor and suspension mods in the works
02 Itasca Suncruiser 35U. Workhorse W22 w/Safe-T-Plus, Koni FSDs, UltraTrac, etc, etc.
AKIQPilot is online now   Reply With Quote
Old 06-27-2019, 03:47 AM   #10
Senior Member
 
richard5933's Avatar
 
Join Date: May 2019
Posts: 322
The question of whether or not your batteries will still charge depends on which side of the disconnect switch your charger is connected to. Our charger is connected to the battery side of the disconnect, so the batteries will charge regardless.

You can check this for yourself with a multimeter. Measure the voltage at the batteries with the batteries turned 'on' and with shore power connected. Voltage should be over 13.2v if charger is working. Turn batteries 'off' and check voltage again. If it starts dropping, then you know that you're not charging with switch in 'off' position.

Our charger is connected to the battery side of the disconnect for a specific reason. We've got an automatic battery disconnect in the system which will disconnect if the battery voltage drops below a preset state of charge. This is to protect batteries from damage if they drop too low.

If the automatic disconnect should trigger, we've got to have a way to get power to the batteries to recharge them, which means the charger has to be on the battery side of the disconnect.

There are many variable to these systems, even within the same brand. A wiring diagram and multimeter will be a good friend to you in these projects.
__________________
Richard
1974 GMC 4108 - Custom Coach Conversion
richard5933 is offline   Reply With Quote
Old 06-27-2019, 05:43 AM   #11
Senior Member
 
Join Date: Aug 2017
Posts: 1,262
Quote:
Originally Posted by FIRE UP View Post
"....they will not charge...."
Wellllllllll, not exactly. It all depends on how the system was built and, whether or not it's a diesel coach or a gas and, what kind equipment is installed. For instance, our coach, an '04 Itasca Horizon 36GD with the CAT C-7 330HP, DOES charge the house (and chassis) batteries with the House battery switch in the OFF position. Now, again, it's a diesel unit. But, I cannot speak for gas coaches as, it's been over 8 years since we've had one and, I cannot remember if it even had a house battery cut-off switch.
Scott

My 93 Allegro also charges the batteries with the disconnect in the off position. None of the DC loads will work.
The only sure way is to measure the battery voltage with the disconnect off and shore power connected.
__________________
1993 Tiffin Allegro Bay 32'
Soppy is offline   Reply With Quote
Old 06-27-2019, 05:48 AM   #12
Senior Member
 
spdracr39's Avatar


 
Monaco Owners Club
Join Date: Jul 2016
Location: Cabot, Arkansas
Posts: 1,785
What is your reason for wanting to turn it off? If there is no reason just leave it on.
__________________

__________________
2004 Beaver Monterey Laguna/2015 Chevy Equinox
2014 Chaparral 327RLKS 5'er (FOR SALE)
2017 GMC 2500HD SLE 6.0L Z71 4x4 Standard Bed
https://wordpress.com/posts/enjoying-life.net
spdracr39 is online now   Reply With Quote
Reply

Tags
battery, battery disconnect, power, shore power



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
House Batteries Removed & Shore Power & Battery Disconnect switches on Run? CoachStreamr Gulf Stream Owner's Forum 7 10-16-2017 11:26 PM
Battery Disconnect while on shore power? DHart Newmar Owner's Forum 17 05-19-2016 06:14 AM
Battery Disconnect BD1 only Operates when coach plugged into shore power kcolivier Newmar Owner's Forum 5 10-13-2015 10:18 PM
No power when I disconnect from shore power. Raining Star iRV2.com General Discussion 11 10-14-2013 01:36 PM
Disconnect chassis battery when on shore power? artgpo Winnebago Industries Owner's Forum 20 02-16-2013 07:42 PM

» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:06 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.