Agm batteries
- Thread starter Mrsfish
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TravelTiger
Founding Texas-West Chapter Leaders-Retired
We bought two group 31 AGM batteries from Sams Club. Be sure to take your old ones in for there will not be a "core charge".
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i understand that if we go with the 31’s we will also need new battery boxes?
TravelTiger
Founding Texas-West Chapter Leaders-Retired
Oh yes, I forgot that. We found them at WalMart, if you want actual battery boxes. We bought two, and longer/heavier connecting wires at an auto parts store. If you want to use another container, maybe others can weigh in.
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I have been very happy with 2 of these AGM's. 200 ah combined and no off-gassing in front compartment.
https://www.amazon.com/Universal-Po...al+Power+Group+45978+Sealed+Lead+Acid+Battery
https://www.amazon.com/Universal-Po...al+Power+Group+45978+Sealed+Lead+Acid+Battery
NWILSON
Kentucky Chapter Leaders - retired
We bought the Duracell/Deka batteries Erika is referring to. I found that 2 individual boxes for group 31 batteries will fit under the original box lid. I threaded the straps together to make one long one that holds it all together.
carl.swoyer
Well-known member
I have always used deka group 31 AGM batteries. My setup is four AGM batteries wired together. I purchased the " usable" they are seconds , missing handle scratches but work great
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dave10a
Well-known member
I had the dealer install AGM's and swap out the Heatland supplied charger for a Xantrex because the supplied charger does not configure for AGM's like Xantrex. Everything has been good. BTY AGM batteries do not require a vent so they can be mounted anywhere. Even though the manufacturer of the stock charger claims it is compatible with AGM's as well a wet cell, I find it hard to believe because the charge voltages are different and the built in equalization cycle is a no-no for AGM's. So rather than risk long term damage of my AGM's it swaped out the charger for a more intelligent charger like Xantrex True charge 2. I don't know why some manufacturers make claims that are questionable-- I think they call that marketing 
carl.swoyer
Well-known member
You are correct. My Magnum Ms 2812 and my morning star duo charge controller allows me to identify the specific type of batteries. The morning star duo charge controller is for my 220watt solar panel.
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DaveTyler
Well-known member
Where can you buy the AGM 27 batteries? Have looked with no luck. What costs? Thanks
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travelin2
Pennsylvania Chapter Leaders-retired
Find yourself a Deka battery dealer. Our local guy could get them but stocked the 31s so I bought 2 of them
https://www.google.com/search?q=deka+27+agm+batteries&ie=UTF-8&oe=UTF-8&hl=en-us&client=safari
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carl.swoyer
Well-known member
I purchased deka group 31 AGM batteries. They are seconds called the usable. Internally they are fine but may have missing handle or cosmetic flaws. I usually spend $ 400.00 for four new ones.
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carl.swoyer
Well-known member
Google Deka batteries authorized dealer. I would consider going with group 31 AGM batteries. I've been using the group 31 for ten years. Love them.
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TravelTiger
Founding Texas-West Chapter Leaders-Retired
Dave, check Sams Club. Not all of them carry the 27, but I researched and their Duracell AGM batteries are made by Deka.
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Lou_and_Bette
Well-known member
OKAY, I have been following this thread and, since I tend to be a little slow on grasping technical concepts, can I replace my batteries in my BigHorn with either the AGM 27 or 31’s without changing my converter or causing a problem with my inverter that runs the refrigerator?
carl.swoyer
Well-known member
As a side note, I usually pay
dollars for each of my group 31 AGM " the usable"batteries. Fort Myers FL route 80 discount batteries. 3911 palm Beach Blvd
239-693-9400. Ask for Paul.
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