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Old 08-09-2015, 08:49 AM   #15
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Originally Posted by sneebot View Post
Looks like the house batteries are indeed completely dead. What is the recommended replacement for a 2009-- Lifeline AGM 24T??
As long as they'll fit the battery box, that is the best choice. Which brings up the question, where are the house batteries on a 2009? I'm not familiar with the 2009 models, so I'll run through the litany of pre-2012 locations that I know of from others here on the Forums

If memory serves, on the Interstate that started life as a Sprinter 2500 (no dual rear wheels), there is one house battery under the passenger-size front seat.

On an Interstate that started as a Sprinter 3500 with twin beds, they're easily accessible and side-by-side under one of the beds.

On an Interstate that started life as a Sprinter 3500 and has the sofa/lounge layout (like mine), it's on the passenger side under the sofaŚ and you can't access the battery box without power to the sofa. Which means hooking up to shore power since with dead house batteries you don't have enough power to start the generator. If this is what you have, let me know and I'll tell you how to disassemble the sofa.
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Old 08-09-2015, 09:54 AM   #16
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This is a 2009 3500. It is set-up like yours with the house batteries under the rear sofa. I read your description of the sofa removal--but I haven't dug into it yet...


Quote:
Originally Posted by Protagonist View Post
As long as they'll fit the battery box, that is the best choice. Which brings up the question, where are the house batteries on a 2009? I'm not familiar with the 2009 models, so I'll run through the litany of pre-2012 locations that I know of from others here on the Forums

If memory serves, on the Interstate that started life as a Sprinter 2500 (no dual rear wheels), there is one house battery under the passenger-size front seat.

On an Interstate that started as a Sprinter 3500 with twin beds, they're easily accessible and side-by-side under one of the beds.

On an Interstate that started life as a Sprinter 3500 and has the sofa/lounge layout (like mine), it's on the passenger side under the sofaŚ and you can't access the battery box without power to the sofa. Which means hooking up to shore power since with dead house batteries you don't have enough power to start the generator. If this is what you have, let me know and I'll tell you how to disassemble the sofa.
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Old 08-09-2015, 10:54 AM   #17
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We have an Interstate battery in our Interstate , a marine battery if I recall.

I couldn't tell you the number, but it is a good battery.....might be on the Airstream Interstate Maintenance & Upkeep thread, in the Sprinter and B Van Forum here.

I think I posted it there, and you may find some other helpful info in that thread.


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Old 08-09-2015, 11:49 AM   #18
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This is the link to that thread

http://www.airforums.com/forums/f240...ep-110840.html

It was an AGM battery, from Interstate Batteries.


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Old 08-09-2015, 12:58 PM   #19
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The stacked battery setup comes standard with two 24-series AGM batteries. I did a replacement using two Lifeline GPL-24T that give you 160AH total, but when I did the inverter upgrade, I replaced those with two Lifeline GPL-6CT's for 300AH total. Here are the pictures. A tight fit but worth it for multi-day boondocking. I suppose 4CT's, (220AH total), but it depends on how you are going to use the van.

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Old 08-09-2015, 03:59 PM   #20
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Quote:
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Doesn't appear to be anything in the manual about them. The lightning bolt switch turns on the electric side of the heater while the flame switch turns on and ignites the propane side of the heater.

I was told that since it's only six gallons, that it heats the water very hot so that it will go farther. It's stated somewhere that it's the equivalent to nine gallons. I know that you can take at least two consecutive showers w/o running out.
Just another example of the poor Owner's Manual provided by Airstream. The new 2016 manual describes the water heater switch but it has a different look. Page attached FYI.

- - Mike
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Attached Files
File Type: pdf 2016-Airstream-Interstate_page5-28.pdf (130.8 KB, 20 views)
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Old 08-10-2015, 07:47 AM   #21
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FYI
I found the answer to question '3' of the original post. This white box (and switch) is an additional control for the power step. I believe it provides redundant functionality to the switch located on the lav wall.
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