RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×

Thread Tools Search this Thread Display Modes
Old 11-08-2012, 04:44 PM   #21
Rivet Master
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 6,130
I have the old univolt power supply and I leave it on all the time and have never cooked the battery. The trailer sits a lot.

perryg114 is offline   Reply With Quote
Old 11-08-2012, 05:11 PM   #22
Rivet Master
robert claus's Avatar

2000 19' Bambi
mt. Prospect , Illinois
Join Date: Oct 2006
Posts: 803
Images: 19
My trailer stays plugger in to shore power when not being used. In 5 years of ownership, I only had to water the battery once. The original battery (there's just one) lasted about 7 years, and the next one five (replaced this fall). So, the charger seems to do a respectable job. I run a small electric heater to keep the interior temp at about 50 degrees. I haven't winterized yet, as we've not had a significant cold snap - only a few nights dipping just below freezing - trying to get out for one more weekend!
robert claus is offline   Reply With Quote
Old 11-08-2012, 06:49 PM   #23
Rivet Master
A W Warn's Avatar

2000 25' Safari
1999 34' Excella
Davidson County , NC Highlands County, FL
Join Date: Aug 2006
Posts: 4,324
I leave my trailer plugged in all of the time while stored at home or when camping. I turn off the breaker that controls the circuit that powers the converter. A few days before I leave I turn on that breaker. If I do not travel I'll turn it on over night once or twice a month.

The reason I leave my trailer plugged in is to power a mouse repeller. Have not had a mouse in my trailer since I got this. And, I run a small electric heater fall and spring so I do not need to winterize before traveling south for the winter.
2014 Silverado LTZ 1500 Crew Cab 5.3L maximum trailering package
A W Warn is offline   Reply With Quote
Old 11-08-2012, 10:13 PM   #24
Rivet Master
SuperTrouper's Avatar

2008 27' International FB
Petaluma , California
Join Date: May 2011
Posts: 807
Images: 5
Originally Posted by Alumaholic
We leave our Airstream plugged into shore power all winter while it is parked in Mesa, AZ, December through March.
Airstreams still come equipped with a Univolt converter/charger, an inferior choice in my opinion that is hard on batteries.
So, this summer I replaced the Univolt with an Iota DLS-55. It's great! Two things I have noticed are no more dry batteries, and much more efficient charging when using a generator.
Hope this helps!
The IOTA is quieter too! No hums and a variable fan that is controlled by current draw not simply temp of power supply.

SuperTrouper is offline   Reply With Quote
Old 11-09-2012, 06:15 PM   #25
Rivet Master
2011 23' Flying Cloud
Durango , Colorado
Join Date: Oct 2010
Posts: 614
You can leave the shore power connected, just flip the battery disconnect switch (ours is right by the entry door) to 'STORE' to isolate the batteries from the single stage converter/charger. This will prevent overcharging while leaving power (110v & 12v) energized. You might flip it to 'USE' for an hour or so once a month to maintain your batteries, or better yet, get a BatteryMinder to maintain the batteries. Ultimately, changing to a three stage converter/charger might be the best route. There is a three stage conversion kit for the Parallax converter available:
Magnetek/Parallax 6300/7300 Upgrade Kit
Safe Travels,
Joe & Joan Donnaway
Durango, CO
JamuJoe is offline   Reply With Quote
Old 11-12-2012, 04:32 PM   #26
Wise Elder
Jammer's Avatar
2010 30' Classic
Vintage Kin Owner
South of the river , Minnesota
Join Date: Dec 2009
Posts: 4,166
Um, Joe, that link is for "upgrading" the Parallax converter by replacing it with a converter from the World Friendship Co. (WFCO).
To learn to see below the surface, you must adjust your altitude
Jammer is offline   Reply With Quote
Old 11-12-2012, 05:33 PM   #27
Rivet Master
Steelegood's Avatar
2005 31' Classic
Cleveland , Tennessee
Join Date: Nov 2007
Posts: 1,499
Images: 19
If you don't have a three stage converter, I'd disconnect & pull the batteries unless you keep furnace, fridge etc. going all winter and use it occasionally. IMO.

I know you think you understand what you though I said, but I'm not sure that what you heard is what I actually meant!

"If you don't know where you are going, any road will take you there." Lewis Carroll

AIR #38011
Steelegood is offline   Reply With Quote
Old 11-12-2012, 06:59 PM   #28
Rivet Master
Commercial Member
Andrew T's Avatar

2019 27' Tommy Bahama
London , Ontario
Join Date: Aug 2007
Posts: 1,196
What we recomend to customers that are able to store where there is a power connection is to plug the trailer or the convertor in with a cheap basic light timer. You don't want a fancy digital one just one where you slide the pin out. Set it to run one hour per day. That will top up the battery without putting constant pressure on it and save your power bill as well.

Andrew T
Andrew Thomson
London, Ontario

"One test is worth a thousand expert opinions."
Tex Johnston, Boeing 707 test pilot
Andrew T is offline   Reply With Quote
Old 11-13-2012, 08:31 AM   #29
Rivet Master
2011 23' Flying Cloud
Durango , Colorado
Join Date: Oct 2010
Posts: 614
Um, Joe, that link is for "upgrading" the Parallax converter by replacing it with a converter from the World Friendship Co. (WFCO).

Correct, Jammer. This is what was recommended to me by Randy at bestconverter.
Safe Travels,
Joe & Joan Donnaway
Durango, CO
JamuJoe is offline   Reply With Quote
Old 05-27-2013, 05:19 PM   #30
Rivet Master
SteveSueMac's Avatar

2012 27' Flying Cloud
W , New England
Join Date: Oct 2012
Posts: 7,397
So now I'm slightly confused (why should today be different?).

I have the Magnatek/Paralllax 7300 which is spoken of in this thread has having and not having multiple stage charging capability.

The AS user manual implies it does but doesn't say it outright.

I ask because I checked out the batteries today and added distilled water to each cell (first time I've done that since picking it up on April 6). Before doing that, I used a 12v meter to test their voltage and they were at 12.51 which I believe means 90% charged and we've been disconnected for a week (it was 100% when we parked it last week).

So what do I actually have? There is no documentation from Magnatek/Parallax in the briefcase that comes with the trailer.

SteveSueMac is offline   Reply With Quote
Old 05-29-2013, 05:16 PM   #31
New Member
2013 28' Flying Cloud
2006 39' Land Yacht 390 XL
Austin , Texas
Join Date: May 2013
Posts: 1
Same here, mine is always plugged in and I don't have problems
rnaser is offline   Reply With Quote
Old 05-29-2013, 06:01 PM   #32
3 Rivet Member
2004 30' Classic
Hillsborough , New Jersey
Join Date: Apr 2009
Posts: 195
Blog Entries: 1
AS plugged in while in storage

My trailer is parked close to the house so I run an extension cord to a timer which then connects to the trailer cord. I set the timer for about 2 or 3 hours each day. When I come home from a camping trip I automatically connect the timer each and every time. I check the battery level several times a year. I have used this technique for about 25 years. Wolf146
wolf146 is offline   Reply With Quote
Old 05-30-2013, 06:30 AM   #33

2003 25' Classic
Zanadude Nebula , Milky Way
Join Date: Jun 2007
Posts: 16,541
Images: 1
Thumbs up

If anyone has questions about converters I would call Randy.

We use an Iota DLS 55a IQ4.....the IQ4 is an integrated four stage unit. It has worked flawlessly for 5 Seasons with no concerns for extended periods on shore power.

"Any nation that can survive what we have lately in the way of government, is on the high road to permanent glory."
Molly Ivins

“Change is the new normal, if nothing changes, nothing is normal, everything changes, everything is normal.”

ROBERT CROSS is offline   Reply With Quote

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

Featured Campgrounds

Reviews provided by


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 11:38 AM.

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