What's the strongest single deep cell12 volt battery?

Yes measure compartment including access door and squeeze the biggest one you can fit in there. Batteries come in many shapes and sizes, you are not limited to any two standard sizes. I'd start with Mr. Wizard's suggestion of the Trojan 1275 to see if it would fit. That would be a wonderful upgrade. You will need to pour over spec. sheets.

Also if you're having power problems, don't hesitate to check out LED lighting, LED screen TVs, and newer tablets or low consumption laptops if any of those apply. Working from the demand end is just as satisfying as from the supply end.

I've done the same thing with mine: I have pair of Lifeline 300 AH 6 volts stuffed into my compartment. There is hardly a cup of air left in the entire compartment.

tatest wrote:


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).

Just an FYI the battery does not fill the box as it looks it does, it will tuck in further.
I was working on it so it was sitting closer to the door.

I'm not sure about groups & such just yet, Thanks for teaching me though.

I know standard car sizes come in 2 sizes & I think thats a 10" & a 12 if I remember correctly?
This is the smaller.

how wide is that compartment
a trojan 1275, just might shoehorn in there
depth and height will clear
slide a piece of thick vynl over the top of the battery to prevent any accidental contact on rough roads

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.

start reading.

http://usbattery.com/

JiminDenver wrote:
Well a 8-D wont fit.

8-D?

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.

Well a 8-D wont fit.

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?

"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?

~