Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-02-2015, 12:43 AM   #15
Rivet Master
Commercial Member
 
lewster's Avatar
 
Vintage Kin Owner
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 7,278
Optimas in the Group 24 size typically have a 55 amp/hour capacity. Compare this to a Lifeline GPL-24T which has an 80 amp/hour capacity and you can see where the differences begin. A pair of Lifeline golf cart 6VDC batteries (GPL-4CT) have the same footprint as a group 24 battery but being taller, have a 220 amp/hour capacity. Plates on a golf cart style battery are twice the thickness as a group 24, which is where the extra durability is realized.

Lifelines are heavier (more lead), have larger plate surface areas (solid rectangular plates vs. the '6 pack' Optimas) and have a 5 year pro-rated warranty. They are also available in a variety of sizes and voltages.
__________________

__________________
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 07-02-2015, 05:14 PM   #16
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 2,256
Quote:
Originally Posted by c21bill View Post
I have a 14 AI with the 50w panel. How difficult (& costly) would it be to upgrade to the 100w panel that comes on the 15's?
Thanks

That should be an easy straight forward upgrade. You can likely stay with the same wiring and controller as I'm sure that is what Airstream did.


- - Mike
2013 Interstate Lounge EXT on 2012 Sprinter
__________________

__________________
- - Mike
--------------------------
2013 Airstream Interstate Lounge EXT
Boxster1971 is offline   Reply With Quote
Old 07-02-2015, 05:51 PM   #17
Rivet Master
 
73shark's Avatar
 
2011 Interstate Coach
Overland Park , Kansas
Join Date: Aug 2011
Posts: 2,748
Might want to verify that the existing wire gauge is sufficient to handle the increased current.

You could also speak w/ Robert Kendall (800-261-3602) at Atkinson Electronics that makes the solar controller and display.
__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
Upfitted Transit 350 sitting in driveway.
73shark is offline   Reply With Quote
Old 07-02-2015, 06:12 PM   #18
4 Rivet Member
 
Currently Looking...
Rockwell , North Carolina
Join Date: Sep 2014
Posts: 308
Quote:
Originally Posted by lewster View Post
Lifelines are heavier (more lead), have larger plate surface areas (solid rectangular plates vs. the '6 pack' Optimas) and have a 5 year pro-rated warranty. They are also available in a variety of sizes and voltages.
I have suspected for some time that my batteries have not been holding a charge. When we recently returned from an overnight camping trip, the batteries were completely charged. I turned off the power and did not plug in just to see what would happen. Less than 24 hours later, they were down to a little over 10 volts.

I found a distributor less than 20 miles away so I removed the batteries. This was a bit more complicated for me as I had to remove the cabinet I had installed on that side. After unloading the cabinet, I removed six screws to unfasten it. I was able to slide it over far enough to get to the battery box.



On the battery box is a sticker warning about live voltage and a recommendation to unhook the ground from the van battery and to unhook the ground wire next to the gas pedal.





The batteries are in a tray. I had a bit of trouble pulling the tray out because the batteries were bulged out on the sides.







The distributor checked the batteries and found one to be down to a little over 9 volts while the other one was a little over 10. They called the Lifeline rep and told them that I had a 2013 AI. They put me on the phone with the rep whose first question was, "Do you always have the motor home plugged in when you are not using it?" When I answered yes, he asked again to be sure. He then proceeded to tell me that Lifeline was somewhat unhappy that Airstream wired the inverter/charger outside the cutoff switch circuit. So the charger is always on and will run down the batteries. Having the AI plugged in all the time was the answer he was looking for. He then said he would ship two new batteries to my house and charge me $139.95 each. I thought that was very fair. I had them the next day.

The rest of the story is that when I bought the AI used the house batteries and the truck battery were both dead. Mercedes replaced the truck battery but the dealer told me that since the house batteries were deep cycle batteries, they would be fine once charged. Also, to complicate matters, I later discovered that the alternator was not charging the house batteries while I was driving due to a blown fuse. If I had known then what I know now, I would have insisted that the dealer replace the house batteries.

My unit is an early 2013 so it has the Tripp Lite inverter. After my conversation with the Lifeline rep, I called Tripp Lite to ask if it was OK to always have the AI plugged in while in storage. They said it would be fine to do that as it has a sensor so keep if from overcharging. That goes against some of the things I have read here. I am assuming the factory knows their equipment well enough to give me a straight answer. I did not tell them what had prompted the call.
jerhofer is offline   Reply With Quote
Old 07-02-2015, 06:31 PM   #19
Rivet Master
 
73shark's Avatar
 
2011 Interstate Coach
Overland Park , Kansas
Join Date: Aug 2011
Posts: 2,748
Make sure the A1 dip switch is in the up position for AGM batteries.

So the 2013 has moved the batteries out of the hole and put them on the floor level? Did they remove the battery box?
__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
Upfitted Transit 350 sitting in driveway.
73shark is offline   Reply With Quote
Old 07-02-2015, 10:04 PM   #20
Rivet Master
Commercial Member
 
lewster's Avatar
 
Vintage Kin Owner
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 7,278
Quote:
Originally Posted by 73shark View Post
Make sure the A1 dip switch is in the up position for AGM batteries.

So the 2013 has moved the batteries out of the hole and put them on the floor level? Did they remove the battery box?
Nope,

The black steel battery box is still there.....vented thru the sidewall of the van. I typically remove it, as it allows for the installation of larger AGMs with no issues. You will have to elevate the space in the floor that accommodated the steel box....... and don't forget that your generator positive cable runs thru the floor in the same location and IS NOT MARKED.

PS: if you upgrade to the Magnum MMS-1012, you won't have to worry about leaving in plugged in 24/7/365, as it's charging section is a lot smarter than the TrippLite's.
__________________
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 07-02-2015, 10:15 PM   #21
4 Rivet Member
 
Currently Looking...
Rockwell , North Carolina
Join Date: Sep 2014
Posts: 308
Quote:
Originally Posted by lewster View Post
Nope,PS: if you upgrade to the Magnum MMS-1012, you won't have to worry about leaving in plugged in 24/7/365, as it's charging section is a lot smarter than the TrippLite's.
Is there a large enough advantage to justify the cost? How difficult is the installation? Does the installation involve changes to the control panel in the overhead cabinet?
jerhofer is offline   Reply With Quote
Old 07-03-2015, 10:43 AM   #22
Rivet Master
Commercial Member
 
lewster's Avatar
 
Vintage Kin Owner
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 7,278
Quote:
Originally Posted by jerhofer View Post
Is there a large enough advantage to justify the cost? How difficult is the installation? Does the installation involve changes to the control panel in the overhead cabinet?
Hey Jerry,

That depends on what you consider advantage. Cost of batteries, time spent worrying about proper charging from the TrippLite, not getting sufficient charge from 'dip switch settings', etc would be enough for me to pull the trigger on a Magnum. Basically, plug in the coach and forget it's there and have the batteries at 100% when you are ready to use it.

The swap under the lounge is fairly simple. You will need their ME-RC remote for proper monitoring and programming of the charger section, but the communication cable is re-usable. Upgrading the cables to 1/0 would be required as well, and I use a class 'T' inverter fuse to replace the little ANL type that Airstream uses.

You can even add Magnum's ME-BMK, which is a shunt controlled full function battery monitor which reads directly thru the new remote panel.

Best part........it is fully compatible with the new lithium battery charging requirements should you decide to go in that direction in the future.
__________________
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 07-03-2015, 11:05 AM   #23
2 Rivet Member
 
2015 Interstate Ext. Coach
New Orleans , Louisiana
Join Date: May 2015
Posts: 33
Magnum Fan Runs Constantly

Hi,

I managed to drain the house batteries on my 2015 Grand Tour. They recharged yesterday. I'm trying to figure out what pulled them down in a few days. I left it unplugged last night and the batteries were down a bit this morning. I have noticed that the Magnum fan (in this unit behind the power distribution panel on the street side seat) runs constantly. It's hot and quite humid here, but is this normal? The battery disconnect switches off all of the usual suspects (propane valve, sensor, tv signal boost). Any guidance on tracking down other potential parasitic draws?

We've also few sunny days, so I'm not getting a lot of help from the solar...

thanks/r
__________________
NOLA_russ is offline   Reply With Quote
Old 07-03-2015, 11:44 AM   #24
Rivet Master
 
UKDUDE's Avatar
 
2014 Interstate Ext. Coach
Sedona , Arizona
Join Date: Jul 2008
Posts: 1,037
Quote:
Originally Posted by NOLA_russ View Post
Hi,

I managed to drain the house batteries on my 2015 Grand Tour. They recharged yesterday. I'm trying to figure out what pulled them down in a few days. I left it unplugged last night and the batteries were down a bit this morning. I have noticed that the Magnum fan (in this unit behind the power distribution panel on the street side seat) runs constantly. It's hot and quite humid here, but is this normal? The battery disconnect switches off all of the usual suspects (propane valve, sensor, tv signal boost). Any guidance on tracking down other potential parasitic draws?

We've also few sunny days, so I'm not getting a lot of help from the solar...

thanks/r
Are you perhaps leaving the inverter on - from the Magnum control panel? That would drain the batteries pretty quickly and would probably cause the Magnum fan to run excessively. Even using the battery disconnected switch, it doesn't disable the Magnum and several other monitoring and system resources, and it's easy to leave the inverter on.
__________________
UKDUDE is offline   Reply With Quote
Old 07-03-2015, 11:48 AM   #25
2 Rivet Member
 
2015 Interstate Ext. Coach
New Orleans , Louisiana
Join Date: May 2015
Posts: 33
I thought as soon as I hit send that I needed to add that the inverter is off. You're right though, it's an easy one to miss. It'd be great to have a "turn everything off, really" button....
__________________
NOLA_russ is offline   Reply With Quote
Old 07-03-2015, 12:42 PM   #26
Rivet Master
Commercial Member
 
lewster's Avatar
 
Vintage Kin Owner
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 7,278
Do you not have an inverter disconnect switch in the positive inverter feed between the fuse and inverter? I add this to all of my inverter installations.

Great to isolate the inverter for hard re-sets and isolation purposes.


Lew Farber
RVIA/RVDA Nationally Certified Master Tech
Master Tech Energy Systems, Inc.
AM Solar Certified Installation Center
Lifeline Batteries**Magnum Inverters
541-490-6357
__________________
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 07-03-2015, 02:41 PM   #27
Rivet Master
 
Boxster1971's Avatar

 
2013 Interstate Coach
Fulton , Maryland
Join Date: May 2010
Posts: 2,256
Airstream does not install an inverter cut off switch. The battery cut off they do install cuts off very little. I plan to rewire mine so the battery cut off shuts off all house battery functions. I also have a cut off for my solar panels as recommended by AM Solar when I bought my system form them.


- - Mike
2013 Interstate Lounge EXT on 2012 Sprinter
__________________

__________________
- - Mike
--------------------------
2013 Airstream Interstate Lounge EXT
Boxster1971 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
How Amazingly Stupid (on my part) DryFly Electrical - Systems, Generators, Batteries & Solar 2 08-04-2013 01:01 AM
Very Pleased Sbb Our Community 5 05-28-2013 09:18 PM
Pleased with how she shines!! airstrmkids Cleaning, Stripping & Polishing 4 05-12-2011 01:39 AM
Amazingly designed full-time homes audiv8q Full-Timing, Winter Living & Workamping 32 05-11-2011 03:13 PM
Very pleased rgyhiljoy Member Introductions 0 05-13-2006 12:34 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:57 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.