Reply
 
Thread Tools Search this Thread Display Modes
 
Old 01-13-2004, 12:44 PM   #15
2 Rivet Member
 
Stinky's Avatar
 
Join Date: Oct 2003
Posts: 39
inteli-power

This is the one I saw http://www.campingworld.com/browse/s...m?skunum=17299
__________________

__________________
Stinky is offline   Reply With Quote
Old 01-13-2004, 12:55 PM   #16
Rivet Master
Airstream Dealer
 
Inland RV Center, In's Avatar
 
Corona , California
Join Date: Feb 2002
Posts: 16,499
Images: 1
For another $20.00 you can get an Airstream univolt that puts out 55 amps.

A 40 amp converter would be considered light duty for 1969 and up coaches.

Andy
__________________

__________________
Inland RV Center, In is offline   Reply With Quote
Old 01-13-2004, 01:01 PM   #17
2 Rivet Member
 
Stinky's Avatar
 
Join Date: Oct 2003
Posts: 39
Univolt

Even if I only have a 30 amp AC service I can use a 55 amp univolt? I am totally new on this DC stuff.
__________________
Stinky is offline   Reply With Quote
Old 01-13-2004, 01:17 PM   #18
Rivet Master
Airstream Dealer
 
Inland RV Center, In's Avatar
 
Corona , California
Join Date: Feb 2002
Posts: 16,499
Images: 1
Stinky.

30 amp city power service is 3600 watts.

40 amps at 12 volt DC is 480 watts, and 55 amps is 660 watts.

Don't confuse city power with 12 volts. They are two very different animals.

Andy

__________________
Inland RV Center, In is offline   Reply With Quote
Old 01-13-2004, 05:34 PM   #19
2 Rivet Member
 
wannabefulltime'n's Avatar
 
Currently Looking...
Weirton , West Virginia
Join Date: Dec 2002
Posts: 52
Andy,

What is the pros and cons of NOT using a converter, just using an automatic smart charger (automotive type) to maintain your deep cycle batteries?
__________________
wannabefulltime'n is offline   Reply With Quote
Old 01-13-2004, 06:40 PM   #20
Rivet Master
Airstream Dealer
 
Inland RV Center, In's Avatar
 
Corona , California
Join Date: Feb 2002
Posts: 16,499
Images: 1
The so called smart chargers, do not have an internal brain.

Therefore they don't know when to trickle charge or full charge.

A univolt has the brain, and keeps the battery or batteries topped off. When a load is applied, the univolt provides the current for that load, without depleting the battery charge.

If you have a 40 amp charger, the excess current must come from the battery.

Airstream concluded that a 55 amp charger was the most ideal to use. It is for that reason that Airstream has used the same univolt for several years.

Andy
__________________
Inland RV Center, In is offline   Reply With Quote
Old 01-13-2004, 06:53 PM   #21
2 Rivet Member
 
Stinky's Avatar
 
Join Date: Oct 2003
Posts: 39
univolt

Thank you Andy, for the info you will be hering from me in the next few weeks for this and a few other items.
__________________
Stinky is offline   Reply With Quote
Old 01-13-2004, 08:14 PM   #22
Rivet Master
 
davidz71's Avatar
 
1986 25' Sovereign
Southern Middle , Tennessee
Join Date: Mar 2002
Posts: 3,150
Images: 23
wannabe,
Not to take away from Andy's business, Inteli-powers are made in 30, 40, 55 and 80 amp models. The univolt is a good unit and so is the Inteli-power.
__________________
Craig

AIR #0078
'01 2500hd ext. cab, 8.1 litre gas, 5 sp. Allison auto
3.73 rear end
Mag-Hytec rear diff cover
Amsoil Dual by-pass oil filtration system
Amsoil synthetics all around
265 watt AM Solar, Inc. system
davidz71 is offline   Reply With Quote
Old 01-14-2004, 05:27 AM   #23
Rivet Master
Commercial Member
 
New Borockton , Alabama
Join Date: Sep 2002
Posts: 1,288
Images: 21
Inteli-Power

Actually, PD has stopped making the 55 amp but there are a few left out there on dealer shelves. The 60 AMP replaced it and the price did not increase. We sell the 60 amp for $184.95 including the Charge Wizard. We usually have the 55 amp Parallax (7455) in stock also but it just doesn't sell like the Inteli-Power with Charge Wizard, except to a few Airstream people that insist on it because Airstream used it and calls it the Univolt. Most prefer the reliability of the Inteli-Power along with the control of the Charge Wizard. The Charge Wizard does have an "internal brain" and varies the output based on the battery state. Camping World charges $233 for either unit.
Randy
__________________
Randy...Converters, Inverters, Trimetric, Surge Protectors, Zamp Solar, AGM Batteries
www.bestconverter.com
68 Overlander is offline   Reply With Quote
Old 01-14-2004, 08:20 PM   #24
2 Rivet Member
 
wannabefulltime'n's Avatar
 
Currently Looking...
Weirton , West Virginia
Join Date: Dec 2002
Posts: 52
Thanks Everyone,

I just ordered the Inteli-power 60Amp with the Charge Wizard from Randy. It sure is great to have "fellow streamers who have been there ... done that" to get good information from.
__________________
wannabefulltime'n is offline   Reply With Quote
Old 01-14-2004, 09:18 PM   #25
2 Rivet Member
 
Join Date: Dec 2002
Posts: 58
Univolt Biography needed

Our Univolt 5 is we guess the factory installed one. It is in a darn awful place to investigate.

Do any of you know if there is info available to determine the different models?
Were all 74 univolts #5 or did the model # depend on the size of the trailer?

Was there a Univolt 6 ,7, 8, etc. how bout 1, 2, 3, as well?

Is the company or its decendent still in business?
Litton Industries had something to do with it in 74 apparently as I see their logo on the Univolt cover.
Is Litton still around?
Has anyone tried to contact them for old literature and data?

We are a long way off on Univolt but I feel it will need repair too.

TIA
$&V
__________________
Sue&Von is offline   Reply With Quote
Old 01-20-2004, 07:37 PM   #26
2 Rivet Member
 
wannabefulltime'n's Avatar
 
Currently Looking...
Weirton , West Virginia
Join Date: Dec 2002
Posts: 52
Randy,
Just received my Intelli-power and Charge Wizard! Compared to the Univolt in apprearance, they sure have came a long way in 30 years. I will not install it until I have completed the re-insulating and re-placed the interior panels. Hopefully within the next month. Thanks for your input again, good price, timely delivery, and the lady that took my order was very friendly. That is what I like when dealing with ANY business.

Sue&Von
I looked in my Service Manual and my Owners Manual, no mention of a Univolt "5" "6 - 7 - 8 - etc." Maybe you can get an answer from A/S or from Andy @ Inland RV. He gives great information and has plenty of experience to back it up.

Ray
__________________
wannabefulltime'n is offline   Reply With Quote
Old 01-21-2004, 09:37 AM   #27
Rivet Master
Airstream Dealer
 
Inland RV Center, In's Avatar
 
Corona , California
Join Date: Feb 2002
Posts: 16,499
Images: 1
Univolt numbers stopped at 5.

Litton has nothing to do with Univolts at this time.

Will your power on light work correctly with the Intelli-power?

Andy
__________________
Inland RV Center, In is offline   Reply With Quote
Old 01-21-2004, 11:48 AM   #28
Rivet Master
 
Janets Husband's Avatar
 
1977 Argosy Minuet 6.0 Metre
1964 26' Overlander
1977 25' Tradewind
Eastern , Washington
Join Date: Jan 2004
Posts: 865
Images: 6
Power sizing

In my other life (Not the wife's Trailer repair guy) I maintain and install DC power systems for Communications sites. These systems work 24/7, 365 days a years for 20 years straight.
The theory is the same for a trailer.
I hope this will shed a little light on this subject.
Design questions for a system are:
1.) What is the load on the battery going to be?
2.) What is the expected growth?
3.) How long does the system need to run on the battery?
4.) How much space is available for the battery set?
In a trailer this would also include a.)weight, b.) weight distrbution.
Once you know these factors you are ready to make a determination on what size your battery plant and (Charger/Converter) should be.
Storage Batteries are usually rated at a 8 hour discharge rate
[the maximum current flow that can be supplied for 8 hours], look for this rating to tell you how much power the battery will supply. The (Cold Cranking Amps) does not really mean much in this useage of a battery.
Example: Your rig will draw 300 Watts when at full load. 12/300=25 amps (E/P=I Wattage devided by Voltage equals Current) you want to be able to run for 16 hours on battery. The battery should be rated at 55 Amp Hours at a 8 hour rate. You should always derate your battery by 10% for lost capacity, this will always happen.
That should help you get the correct size of your battery needed for your rig.

Now for the Charger/Converter.
I like to look at this question from 2 directions.
1.) How long do I want to take to recharge my battery plant after a deep discharge?
2.) How good is the equipment at correctly "Floating" my battery?

Question 1: How long do I want the recharge to take?
For example, take the total capacity of the battery say 125Ahr8, this would take about 12.5 hours to rechage at a 10Amp charge rate. a 50 amp charger would take about 1 1/4 hours to charge the battery.
Also you must subtract any other load you have running from the current available for the battery charge. I also derate the system by 3% for losses and age.

Question 2: How good is the Charger/Converter at Floating the battery? A car battery charger is not a device I would use to maintain a trailer battery, most of them are constant current and you want a constant voltage device for Floating a battery. The charger must be able to provide a constant voltage while providing variable current to the battery while charging.
This type of device is made to keep a battery at a fixed charge(full) without boiling away its battery electrolite.

One other issue that is often overlooked. Wire.
I don't care what anyone says use the largest gauge wire that is practicle. We use 4/0 and 2/0awg when ever possible even though it will never carry that amount of load. We look at the voltage drop of the wire loop( total length of the wire to and from the battery plant. The larger the wire the less loss (heat/voltage drop).

I know this is rather long but it will work for you if you work the hype.

That's my $0.02
__________________

__________________
Peace
Gary
Janets Husband 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



Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 11:13 PM.


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.