New 6 volt AGM Batteries

[Redterpos3]

Now after 3 seasons I've replaced my original 24 group 12 volt battery with 2-6 volt AGM (Duracell Platinum) 409 Ah. I'm setting up to do some off-grid camping now that I've gotten used to the full-hookup variety.

My trailer sits in my driveway, and given our cold winters I have taken the battery out each year and put in my basement when the weather gets real cold. I was wondering if this is necessary with AGM's?

I can keep my trailer hooked up 24/7 so the batteries stay topped off.

[MEXICOWANDERER]

Yup. At 20F they"ll lose about 4% charge in four months with the ground cable disconnected. Give your convertercand your power bill a rest. 1.300 electrolyte freezes around -85F. But follow instructions exactly to 100.00% fully charge those batteries before winter storage.

[Ivylog]

AGMs hold their charge so I'd just unhook them.

[RoyB]

After looking again at some of these batteries I suspect the AH rating you listed is actually referring to something else maybe cranking amps etc...

Im thinking these are going to fall into the 90-100AH rating class and weight around 70lbs each... The 150Ah batteries I was looking from TROJAN T-1275 produced 150 AH each and weighed at 85lbs...

That many AH's will most likely weigh around 250lbs each for wet cell batteries...

ADDED NOTE: Havent looked at AGM batteries verses wet cell batteries - I may be out in left field big time haha...

Roy Ken

[Redterpos3]

Vulcan Rider wrote:

A fully charged wet cell battery doesn't freeze until about -70 F.

That's helpful to know!! I'd rather not take them out as they are a bit heavy (I didn't weigh them), and they snuggly fit in the spot I had right behind the propane tanks, which I needed to take off to get them in properly. Nice protection actually!

[Redterpos3]

RoyB wrote:
$175 which jumps to $350 for two to get a 12VDC battery bank at Autozone around here for the 385AH AGM models. Guess there is maybe better deals around ???
Roy Ken

The two I have were from Sams Club and cost $179.99 each.

[RoyB]

$175 which jumps to $350 for two to get a 12VDC battery bank at Autozone around here for AGM models. Guess there is maybe better deals around ??? Not sure what the AHs are however...

I do quite well camping off the power grid with my three each GP24 12VDC Interstates giving me 255Ahs...

Also in the market here for upgrading my 2008 Interstate installs. I need to look up the actual weight and actual AH capacity of these AGM's you have... What is exact part number...

Roy Ken

[2oldman]

If your converter doesn't overcharge them, it's ok. For me, I'd rather keep them comfy inside. They're just too darn expensive to take any risk with.

[Vulcan_Rider]

Redterpos3 wrote:
I was wondering if this is necessary with AGM's?

I can keep my trailer hooked up 24/7 so the batteries stay topped off.

No. And it wasn't necessary with the other ones either.
A fully charged wet cell battery doesn't freeze until about -70 F.