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Old 03-11-2015, 10:15 PM   #1
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House Batteries Replacement

I need to replace the house batteries in my 2010 Interstate. Previous owner installed wet cell, deep cycle boat/RV batteries and its just too much trouble to get to them under the rear seat to check and fill them. Search function isn't working now or I would look at old threads. What's recommended now? Has anybody had experiences either good or bad? Thanks.
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Old 03-12-2015, 12:42 AM   #2
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Not sure about the battery box for a 2010, so my answer is NOT definitive…

My 2012 came with two Discover Energy EV-24A-A "traction" batteries, which are deep-cycle AGMs designed for use on electric forklifts and such. Not ideal for RV use, but not too bad. (http://www.rectifier.co.za/Batteries...df/EV24A-A.pdf)

When the time comes to replace them, I'll be using Lifeline GPL-24T AGM batteries, which if memory serve is what comes standard in newer-model Interstates (Lifeline Batteries - Marine & RV Deep Cycle Batteries)
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Old 03-12-2015, 07:38 AM   #3
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... When the time comes to replace them, I'll be using Lifeline ....
We had to replace ours a few months ago and we also chose the Lifeline. My husband did the headwork on that decision so I'm not sure of the rationale, but I am sure it was thoroughly researched.
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Old 03-12-2015, 09:31 AM   #4
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My 2013 came with LifeLine AGM batteries. I think they are now standard.


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Old 03-12-2015, 09:59 AM   #5
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Batteries Plus here in Eastern NC quotes two GPL-24T at $589.24. Does anyone know of another vendor?
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Old 03-12-2015, 10:01 AM   #6
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That price is good. They ain't cheap
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Old 03-12-2015, 05:12 PM   #7
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Some have gone with two 6 volt in series to achieve a greater amp/hour capacity.

Might check Amazon and eBay. Lifeline is the brand that I see mentioned most often.
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Old 03-12-2015, 05:23 PM   #8
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Some have gone with two 6 volt in series to achieve a greater amp/hour capacity.
This only works with the right battery box. In Airstream Interstates where the two house batteries are stacked one atop the other with a wooden false floor in between, it's very tight; the posts of the top battery come very close to making contact with the metal lid of the battery box. The Lifeline 6v 230-amp-hour batteries are taller than the Group 24 12v batteries.

For EXT Interstates with a pull-out battery ttray where the batteries are side-by-side, this is a completely viable option, though.
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Old 03-12-2015, 06:45 PM   #9
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Two GPL-24's give you 160AH. The lounge battery box will fit two GPL-6CT's which will almost double the capacity at 300AH. Unless you're adding another battery box, this is a large as you can go with the stock configuration.
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Old 03-12-2015, 07:33 PM   #10
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Someone described in excruciating detail on this forum how to use 2 of the 6 volt Lifeline batteries and make it fit.

Or maybe it was on the Sprinter forum.
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Old 03-13-2015, 04:28 AM   #11
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Here's what I did here in which I cut the lid but perhaps a thinner spacer between the batteries might make it unnecessary.
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Old 03-13-2015, 06:43 AM   #12
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Here are a few shots that might help:

First, remove the box

Next, replace the floor with a water proof material and seal with SikaFlex 221

Place batteries and restrain in place

You're done!

These are Lifeline GPL-6CT 300 amp/hour 6VDC batteries
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Old 03-13-2015, 03:01 PM   #13
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Quote:
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Here are a few shots that might help:
First, remove the box
Next, replace the floor with a water proof material and seal with SikaFlex 221
Place batteries and restrain in place
You're done!
These are Lifeline GPL-6CT 300 amp/hour 6VDC batteries
Very interesting, Lew! So you removed the box altogether; and it hardly matters whether it's the old type (stacked) box or the newer type with the pull-out tray?

Some detail questions please:
How do you restrain the batteries?
What about the external vent? Sealed off or still required?
The carpet was held to the original box with velcro. Did you stick that onto one of the batteries?
How can you ensure nothing in the rear can touch the terminals?

Thanks, Peter
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Old 03-14-2015, 12:18 PM   #14
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Very interesting, Lew! So you removed the box altogether; and it hardly matters whether it's the old type (stacked) box or the newer type with the pull-out tray?



Some detail questions please:

How do you restrain the batteries?

What about the external vent? Sealed off or still required?

The carpet was held to the original box with velcro. Did you stick that onto one of the batteries?

How can you ensure nothing in the rear can touch the terminals?



Thanks, Peter

Peter,

Nope, as a good friend from 'Nawlins' always says "it don't make no matta" what type of box you have.

The external vent gets sealed so no water can enter they it. Not required with Lifelines and the new Lithiums are incapable of gassing.

New Velcro tabs on batteries to hold the carpet. All positive terminals (2) are covered and insulated with red silicone boots.

I typically don't run more than 1 wire to the positive output terminal, preferring to use remote terminal blocks.

Let me know if you have any other questions.


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