What's the strongest single deep cell12 volt battery?

The TROJAN T-1275 used to be a popular 12VDC Deep Cycle battery choice that gave you 150AHs capacity and would produce 12VDC@20AMPS DC CURRENT for a good 280 minutes(4.6Hrs). One of these is not far away from two of the 6VDC batteries in series giving you 12VDC @ 220Ahs capacity... The two each 6VDC Golf Cart Batteries in series however will give you 12VDC @ 20AMPs for around 447 minutes (7.45Hours)... Lots more power...

Maybe this T-1275 will fit your battery box...



I've always wanted to install a bank of two of these on my trailer tongue area and then an additional two in the back of my truck. Combined together I could get a 12VDC Battery setup with around 600AHs capacity...

Roy Ken

Here is a link to TROJAN Product Specs Guide PDF.
This list show battery weight and overall size

TROJAN ProdSpecGuide


Roy Ken

How big is the compartment? There are certainly 12v too big also.
Picture might help also.

"Blanco1" -
It might help to know what kind of camping you usually do?
(or plan to do)

Full hookups - 110V "shore power"?
An occasional "overnight" without hookups?
Lengthy "boondocking"?

Do you have - or plan to have - a generator?

~

smkettner wrote:
How big is the compartment? There are certainly 12v too big also.
Picture might help also.

Looking at that link tells me maybe there's different size 6volts?

The place I called only gave me one size?

Well a 8-D wont fit.

ol Bombero-JC wrote:
"Blanco1" -
It might help to know what kind of camping you usually do?
(or plan to do)

Full hookups - 110V "shore power"?
An occasional "overnight" without hookups?
Lengthy "boondocking"?

Do you have - or plan to have - a generator?

~

Well it varies, sometimes the desert & other times the beach & yet others the mountains.
& none of these normally have any hook ups.

Yet many other times I do get full hookups when available.

As far as length of stays, usual just a few days max at any given spot.
I get bored easily. :D

& I do have a 2.8 Geni built into the truck camper.
& I also own a portable 2000 Geni.

But my concerns about the battery started because I was having furnace issues & some people led me to believe it could very likely be the voltage dropping in my single 12 volt vs 2 6 volts being more ideal.

My next big trip will be through 5 states with mostly cold conditions expected to drop in to the teens & will be wanting the furnace keeping us toasty throughout the night & as you know, most camp grounds ask that you shut of the Geni set night.

Besides as we all know having more battery is much better than not enough for your needs.

JiminDenver wrote:
Well a 8-D wont fit.

8-D?

start reading.

http://usbattery.com/

Since they pretty much all have the same energy density, it will be the physically largest one.

Trojan's lineup includes the DC500ML, which weighs 332 pounds for 500 AH. This is just about the same weight as 5 group 27s, for 106 AH each.

If you have a specific place you must put the battery, it will thus be the largest that will fit. Measure the space, compare dimensions against industry group sizes and manufacturer-specific sizes (like Trojan's T-series). Also consider how you will lift it into place.

I pair up group 27s because they are the largest that I can lift in and out of my battery box. A single box twice as heavy just won't work for me, I can't get a small crane into position for the job.

A US Battery 185 has about the same footprint as a Group 27, but five inches taller, for twice the capacity, but also twice the weight (120 pounds vs 59). Can you wrestle that into your battery box?

Looking at your pictures now. The compartment is sized for a Group 24, which is what's in there. It is not tall enough for 6V batteries, barely long enough for a Group 27 (13 3/4 inches long). If you can close your door on a Group 27, you can gain about 20 AH capacity (100-105 vs 80-85 for a Group 24 deep cycle).

AGMs in the same sizes often have nominally lower capacities compared to flooded cell, but if you can draw them down more on each cycle without reducing overall life, you might gain a little more capacity. Used the same as flooded cells, they often last longer (the maintenance issues) so that might be traded as more energy per cycle at the expense of some of that life.