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31M Sears Diehard Replacement?

CoMtnGuy

New Member
So what are people going with given Sears discontinuing their 31M?

Is Oydessy really the only quality option?

Steve
 

ExplorerTom

Well-Known Member
I went with a Duralast Platinum battery. It's an AGM made by Deka in the US (out east somewhere). It's supposed to be a good battery. I've had mine for several years. It's been bounced down hundreds of miles of dirt road and trails. It helps to power a winch and a set of KC Dayliters.
 

Brandon

Well-Known Member
I recently picked up a Deka agm group 31m. There are a few other brands that are available.

I'm interested to see if the voltage changed any after sitting for 2 weeks when i get back.
 

DaVikes

Active Member
Last summer I got an Exide group 31 from Amazon, delivered for free in 3 days. The one I got has dual battery posts. One set is conventional, and the other set has threaded posts with a wing nuts. http://www.amazon.com/Exide-XMC-31-MEGACYCLE-AGM-200-Maintenance/dp/B003FFVI8A?ie=UTF8&psc=1&redirect=true&ref_=oh_aui_search_detailpage Last summer it would run the fridge over night, and voltage would only drop by .1 to .2.

Also, last fall, I put together a comparison of some of the group 31 batteries in this thread, towards the end of it. http://www.rockymountainoverland.com/forum/index.php?threads/anyone-use-a-marine-or-rv-battery.727/
 

Brandon

Well-Known Member
I recently picked up a Deka agm group 31m. There are a few other brands that are available.

I'm interested to see if the voltage changed any after sitting for 2 weeks when i get back.
Updated somewhere else, but it did not change after sitting for 2 weeks. Only weird thing is that at least from my cheapie 12v gauge after i turn off the truck, it never stays at 12.6v like others say it should. It has always dropped to 12.2-12.3v and stayed there.