Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-17-2021, 12:18 PM   #1
New Member
 
2007 19' Safari SE
Burke , Virginia
Join Date: Sep 2007
Posts: 2
Battery Storage

I apologize in advance if this has been covered before. We have a 2015 23' Flying Cloud. I replaced the factory converter with a Progressive Dynamics multi voltage stage converter. We have 20/30/50 amp RV shore power hookups at our house where we park our Airstream. We live in the southwest corner of New Mexico where the temperature will dip below freezing at night (into the 20's and occasionally the teens) but the average winter daytime highs are in the 50's. Is there any reason I can't leave the batteries in the trailer and just keep it hooked up to 30 amp shore power?
knbrown is offline   Reply With Quote
Old 10-17-2021, 01:20 PM   #2
Rivet Master
 
2020 23' Flying Cloud
Sebastian , Florida
Join Date: Nov 2019
Posts: 854
Knbrown,
You aren’t delighted to live somewhere with weather like that? Lookin’ for issues?
The biggest risk for a battery is for it to be run down and then exposed to temperature below the freezing point of the depleted electrolyte. Not likely at all for you. If they are lithium without internal heaters, you can’t charge them below 32 F or so.
Do you take the battery out of your car at night? Course not! Relax and enjoy your trailer!
Happy camping!
__________________
-Don
(That man in that tiny can)
(Same man, Bigger can)
GetawA-S is offline   Reply With Quote
Old 10-17-2021, 03:14 PM   #3
Half a Rivet Short
 
2017 30' Classic
2022 Interstate 24X
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 12,709
Hi

Simple / safe / easy answer:

Charge the batteries up.

Unhook the negative lead(s) to the battery(s)

Walk away

Hook back up next spring.

Unless it gets down to -80F, your lead acid batteries will not be damaged. For Lithiums the number is more like -50F.

Having the trailer plugged in all winter means taking all sorts of interesting risks. Much easier to simply not take them.

Bob
uncle_bob is offline   Reply With Quote
Old 10-18-2021, 05:00 PM   #4
Rivet Master
 
ts8501's Avatar
 
2022 25' International
Savage , Minnesota
Join Date: Dec 2007
Posts: 675
Images: 7
Quote:
Originally Posted by uncle_bob View Post
Hi

Simple / safe / easy answer:

Charge the batteries up.

Unhook the negative lead(s) to the battery(s)

Walk away

Hook back up next spring.

Unless it gets down to -80F, your lead acid batteries will not be damaged. For Lithiums the number is more like -50F.

Having the trailer plugged in all winter means taking all sorts of interesting risks. Much easier to simply not take them.

Bob


Bob:

Is this also the case for AGMs? (Good to Negative 80). I like the idea of not pulling them, but I do live in Minnesota.
__________________
"I've got aluminum fever, and the only prescription, is more AIRSTREAM!!!"

'64 Safari Resoration Blog ("May"):
https://ts8501.blogspot.com/

TAC MN-6
WBCCI/VAC 11736
AIR 25979
ts8501 is offline   Reply With Quote
Old 10-19-2021, 10:11 AM   #5
Half a Rivet Short
 
2017 30' Classic
2022 Interstate 24X
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 12,709
Quote:
Originally Posted by ts8501 View Post
Bob:

Is this also the case for AGMs? (Good to Negative 80). I like the idea of not pulling them, but I do live in Minnesota.
Hi

Yes, fully charged lead acids, AGM or flooded are good to insane temperatures. If you run them flat ( as in short one post to the other and leave it that way) they are good to just below freezing. Since a battery in good condition discharges *very* slowly in the cold, you aren't going to run into much trouble over a normal winter.

You will find all sorts of different numbers for freezing point of a fully charged cell. Some show a -92F freeze point. Those same papers also show a -67F freeze point at 85% charge. They then to to -16F at 62% charged.

https://www.trojanbattery.com/pdf/WP...orage_0512.pdf

It does get cold in Minnesota ( been there ....). I don't recall it ever getting below -40F for a full day. Batteries take a while to cool down ....

Bob
uncle_bob is offline   Reply With Quote
Old 10-19-2021, 03:45 PM   #6
Rivet Master
 
ts8501's Avatar
 
2022 25' International
Savage , Minnesota
Join Date: Dec 2007
Posts: 675
Images: 7
Quote:
Originally Posted by uncle_bob View Post
Hi



Yes, fully charged lead acids, AGM or flooded are good to insane temperatures. If you run them flat ( as in short one post to the other and leave it that way) they are good to just below freezing. Since a battery in good condition discharges *very* slowly in the cold, you aren't going to run into much trouble over a normal winter.



You will find all sorts of different numbers for freezing point of a fully charged cell. Some show a -92F freeze point. Those same papers also show a -67F freeze point at 85% charge. They then to to -16F at 62% charged.



https://www.trojanbattery.com/pdf/WP...orage_0512.pdf



It does get cold in Minnesota ( been there ....). I don't recall it ever getting below -40F for a full day. Batteries take a while to cool down ....



Bob


Thank you; this saves me work. I will fully charge the AGMs, and then Pull the negative posts on both batteries. Very simple, very easy.
__________________
"I've got aluminum fever, and the only prescription, is more AIRSTREAM!!!"

'64 Safari Resoration Blog ("May"):
https://ts8501.blogspot.com/

TAC MN-6
WBCCI/VAC 11736
AIR 25979
ts8501 is offline   Reply With Quote
Old 10-19-2021, 03:52 PM   #7
Rivet Master
 
richard5933's Avatar
 
1994 25' Excella
Waukesha , Wisconsin
Join Date: Sep 2020
Posts: 883
Quote:
Originally Posted by knbrown View Post
I apologize in advance if this has been covered before. We have a 2015 23' Flying Cloud. I replaced the factory converter with a Progressive Dynamics multi voltage stage converter. We have 20/30/50 amp RV shore power hookups at our house where we park our Airstream. We live in the southwest corner of New Mexico where the temperature will dip below freezing at night (into the 20's and occasionally the teens) but the average winter daytime highs are in the 50's. Is there any reason I can't leave the batteries in the trailer and just keep it hooked up to 30 amp shore power?
If you have power available to the trailer through the winter there is absolutely no reason you can't continue to let the Progressive Dynamics unit do its job.

My coach batteries have been connected to a PD converter/charger for over 4 years. They stay that way through Wisconsin winters which are much harsher than what you describe. On the occasional warmer (40F or more) day in the winter, I'll run out and check the water level. Otherwise they get no attention from me at all and are good to go in the spring.
__________________
Richard
11018
1994 Excella 25 Follow the build on Gertie!
1999 Suburban LS 2500 w/7.4L V8
1974 GMC 4108a - Custom Coach Land Cruiser
richard5933 is offline   Reply With Quote
Old 10-20-2021, 08:24 AM   #8
Half a Rivet Short
 
2017 30' Classic
2022 Interstate 24X
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 12,709
Hi

Risks of keeping things hooked up:

1) Lighting. Might not be a big deal in January, but it could be in the spring. Even with a surge suppressor a nearby hit can create a mess in a plugged in trailer. Of course it hits the trailer, you have a mess hooked up or not.

2) Converter failure. I've had several converters fail and the trailer is only 5 years old. In one case the DC bus went high voltage and took this and that with it.

3) Mice and wires. Mouse decides to snack on a wire ... odd things happen. Some of those things could be really nasty.

4) Converter dries out the batteries.

5) This or that runs into / runs over the power cord. Sparks can fly when this happens. I have empirical data on that.

None of these are high probability items. However each of them *has* happened and there are threads here documenting it happening. Costs of this or that happening could be pretty crazy ( like if there's a fire ... yikes ... ). Better to be safe.

Bob
uncle_bob is offline   Reply With Quote
Old 10-20-2021, 09:54 AM   #9
CLOUDSPLITTER "Tahawus"
 
ROBERT CROSS's Avatar

 
2003 25' Classic
Zanadude Nebula , Milky Way
Join Date: Jun 2007
Posts: 18,431
Images: 1
Our Lifeline AGM's lasted 11 Seasons fully charged/disconnected in the AS.
The BB Lithium's are under the same routine.

Actually there no reason to power the AS thru the Winter storage months, especially if not being used/checked daily.

Another TETO AS option....

Bob
🇺🇸
__________________
Tahawus

Love for the Adirondacks

Instead of going to ’Starbucks…I make my own Coffee at home, yell out my name rong, then light a five dollar bill on fire.
RLC
ROBERT CROSS is offline   Reply With Quote
Old 10-21-2021, 08:23 AM   #10
Rivet Master
 
ts8501's Avatar
 
2022 25' International
Savage , Minnesota
Join Date: Dec 2007
Posts: 675
Images: 7
Question; after I have fully charged my AGMs, and I have disconnected the negative posts on my batteries, do I need to do anything with the Victron Solar controller?
__________________
"I've got aluminum fever, and the only prescription, is more AIRSTREAM!!!"

'64 Safari Resoration Blog ("May"):
https://ts8501.blogspot.com/

TAC MN-6
WBCCI/VAC 11736
AIR 25979
ts8501 is offline   Reply With Quote
Old 10-21-2021, 09:44 AM   #11
Rivet Master
 
richard5933's Avatar
 
1994 25' Excella
Waukesha , Wisconsin
Join Date: Sep 2020
Posts: 883
Quote:
Originally Posted by ts8501 View Post
Question; after I have fully charged my AGMs, and I have disconnected the negative posts on my batteries, do I need to do anything with the Victron Solar controller?
If you have disconnected the batteries, the solar charge controller is not doing anything. You can just turn off the disconnect/breaker on both the in & out of that if you want.
__________________
Richard
11018
1994 Excella 25 Follow the build on Gertie!
1999 Suburban LS 2500 w/7.4L V8
1974 GMC 4108a - Custom Coach Land Cruiser
richard5933 is offline   Reply With Quote
Old 10-21-2021, 12:07 PM   #12
Half a Rivet Short
 
2017 30' Classic
2022 Interstate 24X
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 12,709
Quote:
Originally Posted by richard5933 View Post
If you have disconnected the batteries, the solar charge controller is not doing anything. You can just turn off the disconnect/breaker on both the in & out of that if you want.
Hi

..... assuming you *have* a disconnect on the "in" side of the controller. If not, this is a great excuse to install one.

Bob
uncle_bob is offline   Reply With Quote
Old 10-21-2021, 12:11 PM   #13
Rivet Master
 
ts8501's Avatar
 
2022 25' International
Savage , Minnesota
Join Date: Dec 2007
Posts: 675
Images: 7
Factory installed Victron, so I do not know if the disconnect is on the “in” side or not.
__________________
"I've got aluminum fever, and the only prescription, is more AIRSTREAM!!!"

'64 Safari Resoration Blog ("May"):
https://ts8501.blogspot.com/

TAC MN-6
WBCCI/VAC 11736
AIR 25979
ts8501 is offline   Reply With Quote
Old 10-21-2021, 04:18 PM   #14
Rivet Master
 
richard5933's Avatar
 
1994 25' Excella
Waukesha , Wisconsin
Join Date: Sep 2020
Posts: 883
Quote:
Originally Posted by uncle_bob View Post
Hi

..... assuming you *have* a disconnect on the "in" side of the controller. If not, this is a great excuse to install one.

Bob
Agree.

There are times when you want to be able to turn off all incoming power, and having disconnects in the proper places make this possible.

On my Victron solar charge controller I followed the Victron wiring diagram. There is a manual battery disconnect between the panels and the controller, and between the controller and the bus bar there is a circuit breaker. With both in place, it's possible to totally isolate the controller from both ends should I ever need to make any tweaks.
__________________
Richard
11018
1994 Excella 25 Follow the build on Gertie!
1999 Suburban LS 2500 w/7.4L V8
1974 GMC 4108a - Custom Coach Land Cruiser
richard5933 is offline   Reply With Quote
Old 10-21-2021, 06:57 PM   #15
2 Rivet Member
 
2021 16' Bambi
Ft Thomas , Kentucky
Join Date: Mar 2021
Posts: 33
Just following along on disconnecting batteries during winterization. I also have AGM's with a solar panel on top. If I leave the AGM's in place, won't the solar panel keep them sufficiently charged? I keep my Bambi outside and it gets slightly filtered sunlight.
Capt Blue is offline   Reply With Quote
Old 11-01-2021, 07:55 AM   #16
2 Rivet Member
 
2016 25' Flying Cloud
Houston , Texas
Join Date: Aug 2015
Posts: 26
It is simple, if you keep your unit connected to shore power, even 15A circuit, your converter will keep your batteries topped off. A smart converter will have a trickle charge and your batteries will be fine. No need to disconnect anything. During winter I keep my motorcycle connected to a Battery Tender and it keeps the battery safely topped off all winter. Your converter will do the same. If lightening hits near your home it can blow out circuits in your house and trailer connected or not.
robearl733 is offline   Reply With Quote
Old 11-01-2021, 08:57 AM   #17
Site Team
 
Rich W's Avatar

 
2006 23' Safari SE
I'm In , Kentucky
Join Date: Dec 2012
Posts: 3,987
Images: 5
Quote:
Originally Posted by Capt Blue View Post
Just following along on disconnecting batteries during winterization. I also have AGM's with a solar panel on top. If I leave the AGM's in place, won't the solar panel keep them sufficiently charged? I keep my Bambi outside and it gets slightly filtered sunlight.
We have AGMs with a factory installed solar panel on top and use a storage lot. We've not had any problems and we don't disconnect anything and Use/Store is in Store position. The batteries stay topped off. Just check on them periodically to confirm the voltage
__________________
-Rich
Rich & Yvonne
2006 Safari SE -Dora-
2004 4Runner SE 4.7L V8
Rich W is offline   Reply With Quote
Old 11-01-2021, 10:37 AM   #18
CLOUDSPLITTER "Tahawus"
 
ROBERT CROSS's Avatar

 
2003 25' Classic
Zanadude Nebula , Milky Way
Join Date: Jun 2007
Posts: 18,431
Images: 1
Well...45yrs of bucklenusting was taught me...the best way to 'store' a battery that's not being used.
Charge it fully and leave it alone with NO load.

Bob
🇺🇸

Today....
Attached Thumbnails
Click image for larger version

Name:	2D1E287C-8DD4-4E53-8154-ECB254BF09AB_1_201_a.jpg
Views:	5
Size:	131.7 KB
ID:	407326  
__________________
Tahawus

Love for the Adirondacks

Instead of going to ’Starbucks…I make my own Coffee at home, yell out my name rong, then light a five dollar bill on fire.
RLC
ROBERT CROSS is offline   Reply With Quote
Old 11-01-2021, 11:59 AM   #19
Site Team
 
Rich W's Avatar

 
2006 23' Safari SE
I'm In , Kentucky
Join Date: Dec 2012
Posts: 3,987
Images: 5
As long as the battery remains at full charge, sulfation doesn't occur. The problem is that parasitic loads or even just aging in place will allow a battery to slowly discharge.

My Lifeline AGMs, and the previous set as well (which I still have), drop to 75% charge if I don't keep them topped off with either the solar panel or the charger in the garage.

In my boat I have regular lead-acid batteries. Marine batteries have a 1 year warranty, probably because the manufacturers got tired of replacing batteries that died in the second winter. To avoid that problem I keep mine on a timer to kick off a charger twice a day, to simulate a car that's started and run each day. That has really improved their lives.

So if your batteries will hold a 100% charge without any maintenance, you're in great shape. YMMV
__________________
-Rich
Rich & Yvonne
2006 Safari SE -Dora-
2004 4Runner SE 4.7L V8
Rich W 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
"PVC" Styled Sewer Storage/Rear Bumper Storage Repair Frank&Mike Bumpers & Bumper Storage 5 11-04-2010 09:30 PM
Battery Storage Location mwells4654 Batteries, Univolts, Converters & Inverters 4 10-07-2010 07:18 PM
71 battery storage trim batt Exterior Storage Compartments & Access Doors 7 08-03-2010 08:44 AM
Battery Storage luckydc Batteries, Univolts, Converters & Inverters 2 11-07-2004 09:34 PM
Battery Storage JAG Electrical - Systems, Generators, Batteries & Solar 2 07-05-2002 03:06 PM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.



All times are GMT -6. The time now is 11:48 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.