Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-09-2015, 05:28 PM   #1
Rivet Master
 
Mrjkq's Avatar
 
2016 25' Flying Cloud
Venice , Florida
Join Date: Apr 2015
Posts: 982
Battery Voltage

QUESTION: My AS when not in use is stored away from our home, as of yet I've not pulled the trigger on a generator. My voltage now reads 11.9, how low can I SAFELY let it drop before rechargeing?
__________________

__________________
Joe
Venice, FL
2016 FC 25RTB
TAC FL-47
2016 Nissan Titan XD Cummins Diesel
Mrjkq is offline   Reply With Quote
Old 11-09-2015, 05:43 PM   #2
Overland Adventurer
 
AtomicNo13's Avatar
 
1991 34' Excella
2009 34' Panamerica
Telluride , Colorado
Join Date: May 2012
Posts: 1,885
You are already there....
Name:   ImageUploadedByAirstream Forums1447112576.253737.jpg
Views: 274
Size:  113.7 KB
__________________

__________________
AtomicNo13 is offline   Reply With Quote
Old 11-09-2015, 05:51 PM   #3
Rivet Master
 
2014 20' Flying Cloud
Long Island , New York
Join Date: Jun 2015
Posts: 6,357
Quote:
Originally Posted by Mrjkq View Post
QUESTION: My AS when not in use is stored away from our home, as of yet I've not pulled the trigger on a generator. My voltage now reads 11.9, how low can I SAFELY let it drop before rechargeing?
It is my understanding that 11.9 is already too low, and that you have started to damage your battery.
__________________
OTRA15 is offline   Reply With Quote
Old 11-09-2015, 06:47 PM   #4
Rivet Master
 
Mrjkq's Avatar
 
2016 25' Flying Cloud
Venice , Florida
Join Date: Apr 2015
Posts: 982
Thanks, bringing it home tomorrow for an over night charge.
__________________
Joe
Venice, FL
2016 FC 25RTB
TAC FL-47
2016 Nissan Titan XD Cummins Diesel
Mrjkq is offline   Reply With Quote
Old 11-09-2015, 08:22 PM   #5
Rivets?
 
nvestysly's Avatar

 
1992 29' Excella
2010 22' Interstate
Van By The River , Georgia
Join Date: Feb 2002
Posts: 1,522
Quote:
Originally Posted by Mrjkq View Post
Thanks, bringing it home tomorrow for an over night charge.
Your plan sounds like a good one. You may need to bring it home now and then to charge the batteries until you purchase a generator.

Some related comments...

Are you disconnecting the batteries when you put the trailer in storage? I'm not entirely familiar with the new model trailers but there is some type of switch (typically near the door) that connects/disconnects the batteries from the system. During storage it makes sense to disconnect the batteries.

The little bit I know about new Airstreams indicates that even when you "disconnect" the batteries with the switch by the door you haven't really completely disconnected all parasitic loads. I'm sure somebody else with chime in here but I'd suggest a manual switch that connects and disconnects the positive terminal of the battery system. You can find this type of switch at an auto parts store or RV dealer.

Unless something has changed for new Airstreams, the 24V converter (it's also the charger for your batteries) leaves a bit to be desired. As recently as 2012 Airstreams were sold with single-stage converters and these don't do a great job charging and maintaining your battery voltage. Check other threads on the subject of multi-stage chargers. I'm not aware that Airstream has started building trailers with multi-stage units so it's likely that your trailer will benefit from an upgrade.
__________________
Lucius and Danielle
1992 29' Excella Classic
1996 GMC Suburban C2500 7.4L
2005 Chevrolet Suburban K2500 8.1L
Got a cooped-up feeling, gotta get out of town, got those Airstream campin' blues...
nvestysly is offline   Reply With Quote
Old 11-09-2015, 09:33 PM   #6
Rivet Master
 
Mrjkq's Avatar
 
2016 25' Flying Cloud
Venice , Florida
Join Date: Apr 2015
Posts: 982
Aware of disconnect etc, also aware of the draw from the propane detector & appreciate above comments. My plan tomorrow is to fully charge the battery's then return the AS to storage, disconnect the - cable & see how it goes. I'm putting off buying that 2000w generator until next spring as I won't need it until then aside from this charging situation. Again everyone, thanks for your in put.
__________________
Joe
Venice, FL
2016 FC 25RTB
TAC FL-47
2016 Nissan Titan XD Cummins Diesel
Mrjkq is offline   Reply With Quote
Old 11-09-2015, 10:38 PM   #7
Rivet Master
 
2015 30' Classic
Pleasanton , California
Join Date: Jan 2015
Posts: 618
Always safer to disconnect the negative terminal, not the positive terminal. By disconnecting the negative terminal you eliminate the possibility of shorting the positive terminal to the chassis, thus causing a dead short across the battery.
__________________
Al, K6IV
2015 30' Classic, "Chez Nu"
2014 RAM 2500 w/Cummins Diesel
ProPride Hitch, 400 W Solar
alano is offline   Reply With Quote
Old 11-10-2015, 01:32 PM   #8
Rivet Master
 
Mrjkq's Avatar
 
2016 25' Flying Cloud
Venice , Florida
Join Date: Apr 2015
Posts: 982
Quote:
Originally Posted by alano View Post
Always safer to disconnect the negative terminal, not the positive terminal. By disconnecting the negative terminal you eliminate the possibility of shorting the positive terminal to the chassis, thus causing a dead short across the battery.
Is it necessary to disconnect both negative terminals or just one?
__________________
Joe
Venice, FL
2016 FC 25RTB
TAC FL-47
2016 Nissan Titan XD Cummins Diesel
Mrjkq is offline   Reply With Quote
Old 11-10-2015, 01:43 PM   #9
Rivet Master
 
Mrjkq's Avatar
 
2016 25' Flying Cloud
Venice , Florida
Join Date: Apr 2015
Posts: 982
I brought the AS home this afternoon. When I left the storage facility my voltage was still at 11.9. I drove the 6 miles to my house, unplugged the umbilical & checked it again, this time it read 12.1. I've noticed in the past that even after an overnight charge (& unplugging) it still only reads only 12.6 to 12.8, its been like that since I picked up the coach in July. It's been in storage for over 6 weeks unplugged so I guess the voltage drop should be expected.
__________________
Joe
Venice, FL
2016 FC 25RTB
TAC FL-47
2016 Nissan Titan XD Cummins Diesel
Mrjkq is offline   Reply With Quote
Old 11-10-2015, 02:06 PM   #10
Rivet Master
 
KJRitchie's Avatar

 
2008 25' Classic
Wichita Falls , Texas
Join Date: Nov 2012
Posts: 4,218
12.6 to 12.8 is the resting voltage and indicates 100% charge. If you disconnect the negative battery terminal it should stay that way well over a month. If you are not planning to use the trailer for several months pull the batteries and take them home and put on a maintenance charger. Its probably a good idea while at home to check the specific gravity of each cell with a hydrometer.

Kelvin
__________________
2008 Classic 25fb "Silver Mistress"
2015 Ram 2500 6.7L Cummins. Crew Cab, 4x4, Silver
KJRitchie is offline   Reply With Quote
Old 11-10-2015, 02:35 PM   #11
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 2,321
Quote:
Originally Posted by Mrjkq View Post
Is it necessary to disconnect both negative terminals or just one?
If you have two batteries, you can leave the cable between the two negative posts, but any wire going away from the batteries should be disconnected.

Al
__________________

"You cannot reason someone out of a position they have not been reasoned into"

Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
2001 Safari 25 RB Twin (Gone, but not forgotten)
WBCCI 1322, TAC FL-39, AIR 82265

Al and Missy is offline   Reply With Quote
Old 11-11-2015, 03:03 PM   #12
Rivet Master
 
Mrjkq's Avatar
 
2016 25' Flying Cloud
Venice , Florida
Join Date: Apr 2015
Posts: 982
Well, after charging overnight I returned the AS to storage. I checked the voltage & it read 12.9, so I disconnected the negative battery cable before leaving. Hopefully they will maintain that level or close to it until our next trip in early February.
__________________

__________________
Joe
Venice, FL
2016 FC 25RTB
TAC FL-47
2016 Nissan Titan XD Cummins Diesel
Mrjkq 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
Battery State of Charge-Voltage Chart Mexray Batteries, Univolts, Converters & Inverters 1 09-08-2010 02:21 PM
Too High Battery Voltage? TankerIP Batteries, Univolts, Converters & Inverters 14 08-08-2010 09:58 PM
Low voltage... converter or battery problem? patrickdylan Batteries, Univolts, Converters & Inverters 5 08-22-2009 10:24 PM
Low-Voltage Battery Alarm rseagle Electrical - Systems, Generators, Batteries & Solar 14 04-19-2006 09:19 PM
voltage at battery? 3Ms75Argosy Electrical - Systems, Generators, Batteries & Solar 1 07-27-2005 05:25 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:27 AM.


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.