AGM Battery ? - Fiberglass RV


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Old 12-19-2012, 08:08 PM   #1
jck
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Red face AGM Battery ?

It is time for a new 12 volt battery and I would like feedback from those who
have elected to use the AGM Battery. Has it been worth the extra expense?
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Old 12-19-2012, 08:13 PM   #2
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They do not need water and can be mounted inside, had them in the past and liked them.
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Old 12-20-2012, 01:20 AM   #3
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I've used AGM batteries for the last five years in my electric dive compressor.
Group 34 they do stand up well given the number of times I recharge.
After five years I'm still using the ones I started with.
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Old 12-20-2012, 05:07 AM   #4
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I bought a Lifeline group 24. According to the manufacturer it should last between 300-1000 charge/discharge cycles compared to 100 cycles for the typical marine deep cycle. It is sealed, can be used in any position, is UPS shippable, and has an extremely low self discharge rate. When this one dies I will buy another without hesitation despiite the very high cost ($250). Mine is over 5 years old. Raz

p.s. Welcome to the forum
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Old 12-20-2012, 09:25 AM   #5
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Thanks for the timely feedback. I have decided to use an AGM. Now I need to
decide on the size and brand. I would like as much reserve capacity as I can get for the space I have with my Bigfoot 21fb.
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Old 12-20-2012, 10:44 AM   #6
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I use Odyssey .
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Old 12-20-2012, 04:56 PM   #7
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I corrected my first post. The battery is a Lifeline not a Lifeliner. That's what I get for posting before my morning coffee.

Lifeline Batteries - Marine & RV Deep Cycle AGM Batteries

I am not familiar with the Odyessy that Daniel mentioned. I think the most common brand is Optima. Found at Sears, Napa, ect. I bought one of those for my tractor but I have not had it long enough to form an opinion. Raz
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Old 12-20-2012, 07:24 PM   #8
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Originally Posted by P. Raz View Post
I am not familiar with the Odyessy that Daniel mentioned. I think the most common brand is Optima.
ODYSSEY Batteries - Official Manufacturer's Site (note - not "Odyessy")
OPTIMA® Batteries
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Old 12-20-2012, 09:34 PM   #9
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thanks for catching the name.
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Old 12-21-2012, 08:16 AM   #10
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I just purchased a Optima Deep Cycle for my pick up. The Optima regular Red top lasted 8 1/2 years. The Deep Cycle was the same price so I thought I'd try it.
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Old 12-21-2012, 08:57 AM   #11
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I got one this past summer, keep it inside the trailer under a dinette seat, and have been satisfied with it. I forget the brand name, though - got it from one of those battery stores.
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Old 12-24-2012, 08:15 PM   #12
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I had an Optima blue top in my Jeep for 5 yrs. and it served me well. I replaced it with another blue top that lasted about a year before I started having problems. It seems my Jeep has a slight discharge which kills the battery after sitting for several weeks. I tried reviving the battery by long charging periods, but the battery never came back to full storage capacity. Optima replaced the battery for me under warranty. I now have a main disconnect switch on the battery lead so I can park the jeep for long periods without killing the battery. I would say the AGM batteries are good if you don't allow them to discharge to a flat condition. Just my 2 cents.

Russ

I bought the blue top because it is a deep cycle design that can also dump enough current to start an engine. It also has handy top terminals to hook up winch and other accessories.
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Old 12-26-2012, 06:25 PM   #13
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Originally Posted by jck View Post
Thanks for the timely feedback. I have decided to use an AGM. Now I need to
decide on the size and brand. I would like as much reserve capacity as I can get for the space I have with my Bigfoot 21fb.
I have the Lifeline Group 27 AGM battery in my 17' Bigfoot. Like it very much. Larger battery box just fits into the tray in the nose cone.
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Old 12-27-2012, 03:50 AM   #14
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Originally Posted by Don Dunsmore View Post
I have the Lifeline Group 27 AGM battery in my 17' Bigfoot. Like it very much. Larger battery box just fits into the tray in the nose cone.
I wonder if the group 27 has a large capacity difference compared to the group 24, or the group 34. No one seems to be commenting on the Ahr rating of their batteries.

Can you discharge an AGM battery further then the standard led acid batteries? Or, is 50% or less still advisable?
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