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Old 08-15-2014, 10:28 AM   #1
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House (not starting) Battery

I need to replace the house battery in my 2010 Airstream Interstate 3500 with lounge seating and bed. Can someone tell what class battery it is? I would like to get a battery to have on hand when I take the old one out. I live in a rural area and don't want to have to wait a week for one to be delivered. I assume most would suggest an AGM?
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Old 08-15-2014, 10:36 AM   #2
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An AGM is what was recommended by Interstate Batteries and just put into mine, for the reasons I have already posted, although that's all I can tell you as I know nothing more.

It may be the thing to do is to pull the old one, or at least get to it, and see what is already in there. ?

Could also call the service center at JC and I'm sure they would be glad to help you.

Good luck,


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Old 08-15-2014, 10:47 AM   #3
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You could also search online at the Sprinter Forum, Sprinter-Source.com - The best reSource for Sprinter van owners and enthusiasts., or you could post the question there under SPRINTER TALK or the NCVS TALK, or you could go online to say INTERSTATE BATTERIES and look at what is listed as the size for your Sprinter, or you could call a Sprinter dealer.

Or you could just Google 2010 Mercedes 3500 Sprinter van battery and see several choices of batteries but they are are the same class battery. I'll let you look.
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Old 08-15-2014, 10:58 AM   #4
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This is also a good time to look into increase capacity by using 6V batteries. There is a lot of good information on forum about it.
Good luck.


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Old 08-15-2014, 11:27 AM   #5
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All Interstate parts manuals are online and you can usually find lot of useful information in them. For the 2010 model, the parts manual is here:
http://www.airstream.com/wp-content/...tate-parts.pdf
It says you need a 12 volt deep cycle group 24 AGM.
The latest models use Lifeline batteries:
Lifeline Batteries - Marine & RV Deep Cycle Batteries
An upgrade to 2 6volt batteries may be desirable for more capacity, but you may not have the room.
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Old 08-15-2014, 11:34 AM   #6
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And why would one need to increase capacity for a starting battery?
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Old 08-15-2014, 11:41 AM   #7
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I may have mis-posted. This is not the starting battery. It is the battery under the bed in the back used for operation and functions other than starting.
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Old 08-15-2014, 12:44 PM   #8
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Quote:
Originally Posted by aa9zz View Post
I need to replace the house battery in my 2010 Airstream Interstate 3500 with lounge seating and bed. Can someone tell what class battery it is? I would like to get a battery to have on hand when I take the old one out. I live in a rural area and don't want to have to wait a week for one to be delivered. I assume most would suggest an AGM?
12v Group 24 AGM, about 84 amp-hours each. My 2012 has two of them, stacked one on top of the other, with a plywood false floor in between. If yours has the same setup be very careful when disconnecting the batteries; until they're BOTH disconnected, the red wire is still hot. Don't ask how I discovered this shocking secret…
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Old 08-15-2014, 01:56 PM   #9
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That makes a BIG difference in answering the question. But I would go for the AGM battery as they do not gas off as wet cells can. But your battery box is probably vented to the outside.
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Old 08-15-2014, 01:59 PM   #10
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That makes a BIG difference in answering the question. But I would go for the AGM battery as they do not gas off as wet cells can. But your battery box is probably vented to the outside.
Definitely vented. But not terribly accessible when the batteries need to be topped off with water. Hence the need for AGMs, that never have to be topped off.
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Old 08-15-2014, 02:15 PM   #11
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One advantage of lead acid batteries is that it doesn't hurt so bad when they get ruined because they are accidentally discharged flat a couple of times....

Just sayin...
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Old 08-15-2014, 02:26 PM   #12
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Follow the instructions. Use a good inverter. Learn about your electrical system and battery. There should be no need for running the batteries down below 50% repeatedly. When parked and not in use. Turn off Master Switch and park in sunlight for the solar panel. Or if possible plug into shore power to maintain the battery. Or, if you can afford to, switch to Lithium batteries which can stand repeated low discharges.
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Old 08-15-2014, 02:30 PM   #13
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Do AGM batteries or lithium batteries really make economic sense?

In my use of them the haven't.
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Old 08-15-2014, 03:02 PM   #14
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I was told to get the AGM battery because it rides under the passenger seat, inside, and doesn't give off the gases mentioned by BikerBill....like the last replacement battery we got, not knowing this.

It is significantly more expensive, however.


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