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Old 11-09-2015, 05:38 PM   #1
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Lifeline Batteries

I need to replace the house batteries. Does anyone know if the Lifeline 27T will fit or do I need to stick with the 24T?
Does anyone have any other suggestions?

Thanks,
Chris
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Old 11-09-2015, 10:20 PM   #2
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I can't see your profile to see which Interstate you have - standard length or extended? Battery position is dependent on model.


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Old 11-10-2015, 08:24 AM   #3
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Depends on whether you intend to keep the battery box or not. With the removal of said box, you can use a variety of Lifeline's offerings up to a pair of 6-CT golf cart batteries at 300 amp/hours.


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Old 11-10-2015, 09:03 AM   #4
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I have a 2015 Grand Tour Ext and upgraded my batteries to the GPL-6CT. My battery box was outside underneath behind the driver side rear wheels. My dealer had to have new battery boxes built. It wasn't cheap, but I think in the long run it will be worth it.
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Old 11-10-2015, 09:10 AM   #5
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I just converted a new Grand Tour to 400 watts of solar with a 300 amp/hour lithium and Magnum MS-2012. All components placed inside the coach with minimal impact on storage availability.

BTW, if you want a real eye opener, take a look at how Airstream mounted the new 'upgraded' 100 watt flex solar panel. I seriously doubt that it works any better than the old 50 watt hard panel that they used previously.

I'll post some shots on a new thread when I get a minute.


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Old 11-10-2015, 02:48 PM   #6
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It's a 2013 extended lounge. Plan to keep the same battery box under the sofa.
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Old 11-10-2015, 09:51 PM   #7
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Quote:
Originally Posted by ofdcb View Post
It's a 2013 extended lounge. Plan to keep the same battery box under the sofa.
pair of GPL-27T might fit if you remove the bottom battery tray.
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Old 11-10-2015, 11:23 PM   #8
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Thank you
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Old 11-11-2015, 06:36 AM   #9
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One other thought; you might need to rotate the larger batteries 90 ti fit properly. This works well on trailer mounted batteries and might also be necessary for your AI.
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Old 11-11-2015, 09:36 AM   #10
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Might be a good time to consider upgrading to 6v batteries. On my 2014 Twin with the batteries under the roadside bed, the Lifeline GPL 4ct's fit with room to spare and the existing cables worked perfectly for the series connection. The benefit is 37.5% more capacity. (220 AH vs 160 for the existing 12v batteries). Check the battery specs on Lifeline's website and you can compare replacement batteries to your existing to be sure they'll fit.
Just a thought.
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Old 11-18-2015, 06:31 AM   #11
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Quote:
Originally Posted by Dalwyn View Post
I have a 2015 Grand Tour Ext and upgraded my batteries to the GPL-6CT. My battery box was outside underneath behind the driver side rear wheels. My dealer had to have new battery boxes built. It wasn't cheap, but I think in the long run it will be worth it.
I have the same 2015 Grand Tour as you. After reading your post I became concerned about the fact that you felt the OEM batteries needed replacing. Can you tell me your reasoning? I was at the factory 3 weeks ago and asked them about access to the house batteries. They were a bit vague. I also asked about rotating the tires. They were not able to perform this and in checking with several Airstream dealers they did not seem to be able to do this either. Do you have experience with this? Many thanks. Jeff Becker.....Cape Coral, Fl
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Old 11-18-2015, 06:52 PM   #12
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I also asked about rotating the tires. They were not able to perform this and in checking with several Airstream dealers they did not seem to be able to do this either. Do you have experience with this? Many thanks. Jeff Becker.....Cape Coral, Fl
The problem with rotating the tires is you have THREE different rims on an Interstate, front, outside rear, and inside rear. You CAN rotate the tires, but only by taking each tire off of its rim and moving it to a new rim. Not worth the effort in most cases.

The purpose behind tire rotation is to spread the tread wear more-or-less evenly among all of the tires. But that's a tradition that goes back to the days of natural rubber tires made from tree sap. Modern synthetic rubber tires tend not to wear as badly. You'll have to replace them due to age long before you wear away the tread. Unless you see unusual wear on the front tires due to incorrect front-end alignment, tire rotation is not strictly necessary on an Interstate.
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Old 11-19-2015, 06:51 AM   #13
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Quote:
Originally Posted by jeffbec51 View Post
I have the same 2015 Grand Tour as you. After reading your post I became concerned about the fact that you felt the OEM batteries needed replacing. Can you tell me your reasoning? I was at the factory 3 weeks ago and asked them about access to the house batteries. They were a bit vague. I also asked about rotating the tires. They were not able to perform this and in checking with several Airstream dealers they did not seem to be able to do this either. Do you have experience with this? Many thanks. Jeff Becker.....Cape Coral, Fl
The original batteries could not keep my fridge and freezer running overnight when dry camping. The batteries are underneath behind the drivers side rear wheels. I have not had any experience with rotating the tires, I think the manual shows how it should be done. Hope this helps.
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Old 11-19-2015, 01:23 PM   #14
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Thanks...that was a BIG help. Can you approximate the cost for this? A competitive RV brand is pushing hard on upgraded solar panels and special batteries. It sounds expensive.
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