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Old 07-15-2016, 03:12 PM   #15
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Also, when not in AI, turn off EVERTHING, including the main disconnect switch and the propane on/off switch on outside, (low to ground, behind rear wheel, curb side).
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Old 07-15-2016, 06:27 PM   #16
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Welcome and congrats! You may want to read through the Forum Thread Boondocking in an Airstream GT. There is good advice on battery managemetn in there as well.
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Old 07-15-2016, 06:38 PM   #17
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Sounds like you've just started to have fun w/ your new AI.

My five year old batteries will still run the frig all nite w/ everything else off and still be at 75% to 80% the next morning. By everything, I mean the inverter, propane valve, TV antenna booster, fans, and lites.

When you ran the TVs w/o the generator and the batteries dropped fairly rapidly, was anything else on like the frig, propane valve, etc? Also nothing to be gained by shutting pump off as it is an "on-demand" pump. But it's worth noting that one must turn the galley sink to Cold before closing to prevent the lid from turning the valve on and draining your fresh water tank. Don't ask me how I know this.

Don't get discouraged as someone else mentioned, these are a relatively complicated piece of equipment. Lots of info on the forum for new owners and some of it is concentrated in one thread while a lot of it is spread out thru-out.

IMHO, the best first mod you can make is to add a toggle switch inside in series w/ the outside propane switch. Not sure why after all this time, Airstream hasn't done this.
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Old 07-15-2016, 09:24 PM   #18
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Sounds like you've just started to have fun w/ your new AI. ...
This was awesome remark

You have to love it for doing something on AI every day ))))

Welcome to this world!
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Old 07-16-2016, 09:52 PM   #19
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My husband and I are differing on batteries and placement. He says the walk through with the dealer specifically said there is a battery under the hood that you see when you open the hood. It is used for backup emergency chassis use only. There is another battery under the drivers feet that you access through the floorboard. This is the main battery that starts the sprinter and makes the lights turn, runs the fridge, etc in the actual house portion. That is all.

I am trying to convince him there is a third battery that controls the house. From reading, it is under the back side seat.

Who is correct?
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Old 07-16-2016, 10:17 PM   #20
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I am trying to convince him there is a third battery that controls the house. From reading, it is under the back side seat.
House battery placement differs on various NCV3 Interstate models, but they're always Group 24 AGMs, located somewhere behind the rear axle.

As for the Group 49 AGM battery under the hood, some Interstates don't even have one. Mine, for instance. It's not a house battery.
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Old 07-16-2016, 10:39 PM   #21
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In my 2016 Grand Tour 24.5" Ext. AI, there are 2 house batteries underneath the back of the coach and behind the axles. My batteries are Lifeline AGM (gel cell). These batteries run all the coach/house functions.

There are also, in chassis, one battery under hood ( in front of driver) and one battery under driver side floor mat. These are for the Mercedez-Benz chassis functions. This was told to me by the customer warranty service representative at Jackson Center factory.
This information, I take to be true fact....not supposition.
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Old 07-16-2016, 11:46 PM   #22
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Perfect. Thanks.
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Old 07-16-2016, 11:51 PM   #23
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Originally Posted by sillyRVmom View Post
My husband and I are differing on batteries and placement. He says the walk through with the dealer specifically said there is a battery under the hood that you see when you open the hood. It is used for backup emergency chassis use only. There is another battery under the drivers feet that you access through the floorboard. This is the main battery that starts the sprinter and makes the lights turn, runs the fridge, etc in the actual house portion. That is all.

I am trying to convince him there is a third battery that controls the house. From reading, it is under the back side seat.

Who is correct?

If you have a battery under the hood that sits on a tray on driver's side you actually have four batteries. The one under the hood is a Mercedes optional Auxiliary 12V battery that only powers the 12V outlet on the inside corner on the driver's seat base. The outlet is under the ultra-leather cover on the seat base. The main starter battery is in a space right under the driver's feet that can only be reached by removing the floor covering and removing the metal cover over the battery. For house power your 2015 LoungeEXT model has two 12V batteries in a metal box under the rear lounge seat on the passenger (curb) side. I'm attaching a diagram of the Lounge model battery box from the 2015 InterstateClick image for larger version

Name:	ImageUploadedByAirstream Forums1468731101.711194.jpg
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ID:	267025 parts book available on the Airstream web page under service/manuals tab.

https://www.airstream.com/service/manuals/


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Old 07-17-2016, 01:21 AM   #24
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Yes.
And to get house batteries open rear doors of the van, remove the vertical carpet cover on the very right corner under the sofa, and unscrew 8 screws (# 1 on the Mike's diagram) of the vertical rectangular metal cover (# 2b ).
The tray with two AGM batteries are there.
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Old 07-17-2016, 11:10 AM   #25
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Here is the page from the Sprinter owner's manual that shows both the starter and auxiliary batteries.
Click image for larger version

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ID:	267062


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Old 07-18-2016, 09:39 AM   #26
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Those resources help so much!! Thank you! Today is the day we will pull them out and inspect/check them. And replace if necessary.

I think we have a small propane leak. I keep smelling small whiffs of propane around the outside. So, once we get these two things taken care of, we are off on our first adventure.
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Old 07-20-2016, 12:53 AM   #27
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Well. So far owning our Airstream has definitely been an adventure!

We finally got the batteries removed today. Surprise!! We have bulging Lifeline batteries.
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