Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-29-2006, 10:26 AM   #1
3 Rivet Member
 
Join Date: Apr 2005
Posts: 159
Battery chargers

I posted this thread in another location and did not get any comments so again here is the question I need an answer to.
Many As readers have experience with microprocessor controlled chargers with 2/3/4 stages. My question is "if one is installed and set properly for a particular type of battery such as AGM and the input power (shore power) in temporarely interrupted, when the input power is restored, does the charger need to be manually reset or does it restart on it's own in the proper mode? If your model does restart automatically please let me know the brand and model number.
__________________

__________________
Live and LET live
FrenchBern is offline   Reply With Quote
Old 07-29-2006, 10:42 AM   #2
VAC President
 
Buttercup's Avatar
 
1977 27' Overlander
1954 25' Cruiser
1990 34.5' Airstream 345
VC Highlands , Nevada
Join Date: Mar 2005
Posts: 2,149
Send a message via Skype™ to Buttercup
Quote:
Originally Posted by FrenchBern
I posted this thread in another location and did not get any comments so again here is the question I need an answer to.
Many As readers have experience with microprocessor controlled chargers with 2/3/4 stages. My question is "if one is installed and set properly for a particular type of battery such as AGM and the input power (shore power) in temporarely interrupted, when the input power is restored, does the charger need to be manually reset or does it restart on it's own in the proper mode? If your model does restart automatically please let me know the brand and model number.
I never heard of asnything that needs to be reset. They just work.
__________________

__________________
Buttercup's Web Site. WBCCI #17330, 11281 & 7830. VAC Past President, TAC NV-2 & NV-3
Buttercup is offline   Reply With Quote
Old 09-01-2006, 08:00 AM   #3
3 Rivet Member
 
Join Date: Apr 2005
Posts: 159
Can someone tell me why I can't have a reply to this simple question?
__________________
Live and LET live
FrenchBern is offline   Reply With Quote
Old 09-01-2006, 10:32 AM   #4
Rivet Master
Airstream Dealer
 
Inland RV Center, In's Avatar
 
Corona , California
Join Date: Feb 2002
Posts: 16,499
Images: 1
Quote:
Originally Posted by FrenchBern
Can someone tell me why I can't have a reply to this simple question?
Airstream does not use "battery chargers". Their name for the charger is "Univolt".

They do use "converters", which is an automatic charging system.

That being the case, there is nothing to set or adjust, as it's completely automatic.

However there are other charging systems available as well. You are on your own should you purchase one of those, since some do have adjustmenets and/or settings.

Andy

,
__________________
Inland RV Center, In is offline   Reply With Quote
Old 09-01-2006, 12:18 PM   #5
_
 
. , .
Join Date: Dec 2004
Posts: 8,812
Quote:
Originally Posted by FrenchBern
Can someone tell me why I can't have a reply to this simple question?
yes they restart 'on their own' no need to reset.
a/s brands models are listed in the owners/service manuals
but i'm not aware of any modern units that don't work automatically.
cheers
2air'
__________________
all of the true things that i am about to tell you are shameless lies. l.b.j.

we are here on earth to fart around. don't let anybody tell you any different. k.v.
2airishuman is offline   Reply With Quote
Old 09-02-2006, 07:08 AM   #6
3 Rivet Member
 
Join Date: Apr 2005
Posts: 159
I guess I have been unlucky so far. I have purchased 2 different chargers/converters and tested a third one and none of them restarted in the same mode they were set. All I was asking for is a brandname that does for sure. Thank you for response.
__________________
Live and LET live
FrenchBern is offline   Reply With Quote
Old 09-02-2006, 07:14 AM   #7
3 Rivet Member
 
Join Date: Apr 2005
Posts: 159
Andy, Some modern chargers/converters can be set for the type of batteries you are using such as AGM/deep charge/standard etc and when restarted they default to standard or preset setting instead of owner settings. I have seen one that did not start on its own after power failure.
__________________
Live and LET live
FrenchBern is offline   Reply With Quote
Old 09-02-2006, 10:45 AM   #8
Rivet Master
Airstream Dealer
 
Inland RV Center, In's Avatar
 
Corona , California
Join Date: Feb 2002
Posts: 16,499
Images: 1
Quote:
Originally Posted by FrenchBern
Andy, Some modern chargers/converters can be set for the type of batteries you are using such as AGM/deep charge/standard etc and when restarted they default to standard or preset setting instead of owner settings. I have seen one that did not start on its own after power failure.
Airstream's charger, called a "Univolt" has been used for many years, with tremendous success.

Nothing to adjust, nothing to set.

The only setting is to "sit back" with a cool one, and enjoy.

No problems, no headaches, no worries, just plug the trailer into city power and relax.

Andy
__________________
Inland RV Center, In is offline   Reply With Quote
Old 09-02-2006, 11:23 AM   #9
Rivet Master
Commercial Member
 
lewster's Avatar
 
Vintage Kin Owner
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 7,279
Quote:
Originally Posted by FrenchBern
I guess I have been unlucky so far. I have purchased 2 different chargers/converters and tested a third one and none of them restarted in the same mode they were set. All I was asking for is a brandname that does for sure. Thank you for response.
FB,

If you are looking for a converter/charger for your Airstream, check into the WFCO and Iota brands. They are both fully automatic 3-stage chargers and are very well made.
__________________
Lew Farber...ABYC Certified Master Marine Electrician...RVIA Certified Master Tech ...AM Solar Authorized Installation Center...AIRSTREAM Solar & Electrical Specialist...Micro Air 'Easy Start' Sales and Installations
lewster is offline   Reply With Quote
Old 09-02-2006, 11:37 AM   #10
Rivet Master
 
1975 29' Ambassador
Reno , Nevada
Join Date: May 2003
Posts: 1,351
Quote:
Can someone tell me why I can't have a reply to this simple question?
Now you are starting to sound like my sister ;-)

Sometimes a proper answer isn't as simple as the question.

Most new generation 'smart' automatic battery chargers start out in a 'safe mode' when powered up. This is usually a trickle charge. You then have to set the battery type and initial charge rate manually.

A converter designed for 12v RV service 'knows' what it is (supposed to be) connected to so its power on mode starts with the assumption that it needs to bring an RV battery up to snuff and then maintain it properly.

In the old days, battery chargers had no smarts other than manual switches on the front panel (maybe) to set current. Converters were much the same except usually at a bit lower voltage. These didn't charge batteries very efficiently and could boil the battery dry if left connected for any legth of time.

It is very handy to have a good battery charger in the garage for when some battery needs a bit of help. But you also need a good modern converter in your RV that knows about proper charging and maintenance to keep your RV battery in top shape, too.
__________________
bryanl is offline   Reply With Quote
Old 09-02-2006, 12:05 PM   #11
2 Rivet Member
 
janetbjt's Avatar
 
1976 21' Globetrotter
eugene , Oregon
Join Date: Jan 2006
Posts: 66
Images: 4
frenchbern,
i'm leipper's sister that he is referring to. in the 54 years i have know him, he has yet to awnser a simple question with a simple awnser...
good luck to you in finding the info you requested.
__________________
janetbjt is offline   Reply With Quote
Old 09-02-2006, 02:28 PM   #12
3 Rivet Member
 
Join Date: Apr 2005
Posts: 159
Leipper, I have agreed with all your answers in the elctronic field so far.After 50 years working in this field it's very rare that I do.
The intelligent chargers I have tested so far did not restart in the proper mode for maintaining a battery if the battery type is set to AGM for instance. I believe you will agree that an AGM battery voltage is different than a regular or deep charge battery for full charge status. My problem is if I set the charger for an AGM battery type and after a power outage the charger restart in the state for a regular battery the battery will be overcharged I think. Is my thinking wrong? we have a lot of power outage in SC and I don't like to remember to go reset the charger. My present $22 charger has been maintaining my battery for 3 years now without intervention. I would like to upgrade it with a 40 amps capacity 3 stages since my cheapy has only 8 amps and 2 stages.
Janetjt, I know what you mean by getting simple answers. I have been accused often bout not giving simple answers myself. lol. Unfortunatly I give too many details.
__________________
Live and LET live
FrenchBern is offline   Reply With Quote
Old 09-02-2006, 03:53 PM   #13
2 Rivet Member
 
wlj1943's Avatar
 
1970 18' Caravel
Currently Looking...
Mulino , Oregon
Join Date: Sep 2005
Posts: 88
Charger versus Converter(Univolt)

Hello FrenchBern,
Your question I think was specific to chargers, not specifically converters, but it raises an issue that many on the forum may have missed, and as I have experience with both boats and RV's, I find sometimes these items are confused by many.
First some differences. Most boats (lets keep it simple for now and use motor-sailers as an example) have room for and use very large storage batteries, often 6 D aor 8 D because weight can help a boat if it is in the right place and usually there is the space, so by and large they run off the batteries and charge while under way using high amp output constant duty cycle alternators. Chargers (which work when connected to an AC source) are most often lower output; IE 15 to 50 amps per battery bank and are intended for long term maintenance and slow charging when tied up or for dock storage. Boats usually have a dual redundant DC battery/charger/alternator system; not so with most RV's. AC power connections to both may be similiar in voltage and capacity between dock and a RV park, but different connectors, wiring and standards are used.
Airstreams and most other other trailers use converters, which supply all or most of the DC load when connected to AC (park) power, and also act as a charger anytime the trailer is connected to an AC source. Airstream had a company develop the first sucessful RV converter in the late 50's ( I think it maybe was Arnold Magnetics) and it was trademarked Univolt, and with many trademarked items (like coke) the term univolt was used (incorrectly) for any type or brand of converter. Newer electronic microprosser equipped IGBT based converters are capable of both charging and supplying power for extended periods of time without damaging deep discharge batteries as the ferroresonant transformer (EG old univolt, Magnetech, many others) transformer type convertors and constant current type battery chargers are known to do. I might add we have the off grid folks to thank for driving demand and technology for new battery, convertor/inverter, and related technologies which are now appearing in the RV and boating worlds.

I am fairly sure there are some of the marine chargers and wind/solar charger/ regulator products available that can remember the settings following a loss of incoming line power, but the ones that do so are generally more costly and complex than those sold in the consumer market or via RV supply shops. One good source for DC power system is West Marine technical notes; probably the best discussions of various battery types I have seen. Another resource is Harold Barre's book "Managing 12 volts" but be sure to get the second edition. Also surf the off grid resources.

Bottom line; surf and ye shall find.
WLJ1943
__________________
wlj1943 is offline   Reply With Quote
Old 09-02-2006, 05:48 PM   #14
DFK
2 Rivet Member
 
DFK's Avatar
 
Join Date: Mar 2005
Posts: 49
What am I missing here folks? The several web businesses I've checked in the past that sell batteries and 12v system components all point out that one of the advantages of AGM batteries is that they can use the same charge settings as flooded cell batteries. This is a quote from one of the sites, "In addition, AGM technology batteries can be charged at normal lead-acid regulated charging voltages, therefore, it is not necessary to recalibrate charging systems or purchase special chargers."(www.dcbattery.com). It would seem to me that if you have a charger or converter that is set to flooded cell that setting would be fine for AGMs as well. I use an Intellipower converter with the separate Lead Acid Charge Wizard. (They also have a Charge Wizard with a GEL Battery setting). With the lead acid Charge Wizard I can use either flooded cell or AGM batteries without changing any settings.

DFK
__________________

__________________
DFK 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 Location uwe 1970-79 Tradewind 23 12-02-2015 08:41 AM
igniton switch and the mystery of the dead battery Curtis-79MH Airstream Motorhome Forums 3 10-25-2002 03:58 PM
Extra Battery Placement JaceBeck 1999 Safari 16 10-02-2002 02:03 PM
Battery Dead/Power jack question jcanavera Jacks, Stabilizers, Lifting and Leveling 34 08-16-2002 02:51 PM
Battery drained while on shore power 68International Electrical - Systems, Generators, Batteries & Solar 4 07-15-2002 03:51 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:33 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.