Which Battery 56 or 24

[jpcoutts]

i need a battery for the '86 J 20 and it came with a series 56 unlike the older FSJ's that had series 24 batteries. Does anybody see a downside to using the bigger series 24 to get the better power and reserve capacity?

[Srdayflyer]

ive always used a 24

[will e]

It's heavier.
My motto with batteries is "The biggest one I can fit".

[tgreese]

I've only used the 24. There is a 24 and a 24F; only difference is the poles are reversed.

I agree, largest that will fit. If you go larger, watch out that the positive pole clears the strut in the hood. A side-terminal type would avoid that issue.

[jpcoutts]

Thanks for the replies. That's what I thought but wanted to be sure there wasn't some good reason to to use the 24 or 24F.

[jpcoutts]

Thanks for the replies. That's what I thought but wanted to be sure there wasn't some good reason not to use the 24 or 24F.

[candymancan]

my J10 is using a 24 series.. my Wagoneer is using a 65 i belive.

I got the everstart maxx in the wagoneer, and the everstart plus in the J10.. i was worried the plus was gonna be too weak but it cranks the j10 really good and long even when it was 6f out

[jpcoutts]

After looking at batteries from Autozone, Walmart and a few other places I decided on a battery from Advance Auto. I bought a 24F Diehard wet cell Platinum. I thought about the higher priced battery which uses AGM technology but decided against it after reading some thoughts that the AGM technology has some issues with overcharging and durability. We'll see how it goes. The good news is the truck now starts like it should due to the larger, appropriate I think, battery having 750 cold cranking amps compared to the 56 series it had in it from the factory. I looked at several competitors and the Diehard AGM which have about 710 CCA and less reserve than the battery I bought. I also had to remove the battery tray to get the spacer off due to the bolts being so rusty and corroded. Overall I'm quite happy and glad I got it done.

[Yeller]

The real advantage to AGM is they don’t ever leak and out gas less so corrosion issues are a thing of the past. Regardless of battery need if it is something that I’m keeping around it gets an AGM. Went through a spell where I had to replace 4 of them in 1 month, I cried but the newest one was 11 years old and the oldest was 14. So I sucked it up and quit complaining.

[jpcoutts]

What brand AGM battery are those? I am sure there are advantages to the AGM, but I haven't yet been ready to pay out the $$. It sounds like you are very happy with what you have.

[OldFarmTruck22]

24 with Top and Side terminals so you can hook up winch or other accessories.

[Yeller]

What brand AGM battery are those? I am sure there are advantages to the AGM, but I haven't yet been ready to pay out the $$. It sounds like you are very happy with what you have.

I have Optima's, Odessey's and Deka (Die Hard) all in that age bracket. I have more Deka than any of the others, they have all lasted more than 10 years, my oldest currently in the fleet is 11 years old. Just make sure you are not running over 14 volts when running and if they sit for more than a week put a tender on them and they will last a very long time.

Deke/North Penn makes all of the Die Hard batteries along with many other labels, but that one I know for sure.

[tgreese]

+1 on the battery tender. I have found that my conventional Walmart batteries last something like a decade if kept on a tender when idle.

[candymancan]

24 with Top and Side terminals so you can hook up winch or other accessories.

You can do that if you add a simple Power distro center from the battery to the fender or something.

Yai had to buy a 6amp trickle charger for my Jeeps, with 4 of them, (one my moms) so i have 3, with 3, and only 1 driven usually, the others tend to sit for a bit i noticed my batteries were getting low and slow cranking so i put 1 on a charger and rotate. should probly buy a 2nd charger to keep both charged.

[jpcoutts]

+1 on the battery tender. I have found that my conventional Walmart batteries last something like a decade if kept on a tender when idle.

I do need to add a battery tender due to the infrequency of use of some of my vehicles. Which do you folks use?

[candymancan]

I use this, i improperly said mine was 6amp, i guess its 3amp.. but it works really good and was cheap in walmart, use it on 54inch my lawn tractors battery too

https://www.walmart.com/ip/EverStart-MA ... hbdg=L1103

[tgreese]

I have these
https://www.amazon.com/Battery-Tender-0 ... B000CITK8S
and these
https://www.amazon.com/NOCO-GENIUS1-Ful ... B07W46BX31

They both plug into a wall socket. Instead I run an extension cord under the hood and plug them in there. Works fine, protected from the weather.

[Yeller]

I run the exact same units as tgreese

[OldFarmTruck22]

24 with Top and Side terminals so you can hook up winch or other accessories.

You can do that if you add a simple Power distro center from the battery to the fender or something.

Yai had to buy a 6amp trickle charger for my Jeeps, with 4 of them, (one my moms) so i have 3, with 3, and only 1 driven usually, the others tend to sit for a bit i noticed my batteries were getting low and slow cranking so i put 1 on a charger and rotate. should probly buy a 2nd charger to keep both charged.

Sure, you can do that, but I prefer to run high amperage draw items directly off the battery. Parasitic loss from extra cable lengths and relays is not wanted by me.

[jpcoutts]

Of course the unit from Walmart is the cheapest but the info makes no mention of desulfication which I think may be important to extending battery life. Any thoughts?