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Old 07-28-2015, 01:23 PM   #1
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Brookland , Michigan
Join Date: Jul 2015
Posts: 1
'78 Argosy 28 battery?

What is the replacement for the deep cycle group 78 battery. What works?
AGM the only option?

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Old 07-28-2015, 01:37 PM   #2
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1975 20' Argosy 20
Manston , Kent
Join Date: Mar 2014
Posts: 1,600
I have just installed two regular wet cells - I know they are the bottom of the range but they will give me a few years until the new Li formulation batteries come down in price.

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Old 07-28-2015, 02:13 PM   #3
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1978 Argosy 24
MooreHaven , Florida
Join Date: Jun 2012
Posts: 75
The only battery that would fit in the original batt box in our 78 Argosy 24 was a group 24,and thats not much capacity if boondocking
This is only temporary unless it works! Red Green
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Old 08-24-2015, 02:11 PM   #4
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1978 28' Argosy 28
Minoa , New York
Join Date: Aug 2014
Posts: 19
Same problem. I looks like there are no deep cycle battery short enough to fit in the battery box of the '78 Argosy 28.
Has anyone moved the battery or found another work around?
A regular group 24 side mount might get me through my next trip, but certainly isn't a long term solution.
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Old 08-24-2015, 02:28 PM   #5
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1975 20' Argosy 20
Manston , Kent
Join Date: Mar 2014
Posts: 1,600
I had the tray lowered by 2 1/2" to allow it to pull out for maintenance (and have two group 24s installed), then added a double hinges (dual pivot) to allow the original compartment door to be used (original catch lowers the original door, which then allows access to the latches for the lower hinge).

Have the same on the propane tank compartment which allowed a slightly larger modern tank to be fitted.

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Old 08-25-2015, 06:13 PM   #6
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1979 24' Airstream Excella 24
Tipp City , Ohio
Join Date: Feb 2012
Posts: 374
I switched the batteries in my 24' Excella. The battery box right in font of the drivers seat is very limited in size. By moving the coach batteries to the lower compartment it leaves you many more options.
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Old 08-25-2015, 08:17 PM   #7
1976 28' Argosy 28
billings , Montana
Join Date: May 2015
Posts: 25
Blog Entries: 1
I found that the opening is 9-1/2" tall. My battery's are still good and measure 9-1/2". When I replace them I'm planning on using the yellow top Optima glass mat battery's that too measure 9-1/2. The trick the previous owner shared with me is to installing top post battery's using a thin 1/8" rollable cutting board to keep the terminals from shorting out on the frame.
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Old 04-29-2016, 11:30 PM   #8
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1976 28' Argosy 28
Middletown , California
Join Date: Apr 2016
Posts: 21
It wasn't until I looked in the owners manual did I realize the batteries in a 1978 Argosy 28 are supposed to be side terminal batteries. At least the two batteries under the hood compartment. Otherwise they don't fit properly and are liable to arch. Makes sense when you think about it. As soon as I replaced mine they fit like a glove.

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