From my build thread...
I started looking at dual batteries, I know I could make them fit, but it gets really expensive once you figure in the price of two batteries and the isolator system. So that killed that idea.
So I’m stuck with one battery, and I wanted something that I could exchange locally if there was another issue. That pretty much left the Duralast AGM line through AutoZone. I looked through their selection comparing specifications on each model until I said screw it, I’m getting the biggest battery they make and stock in my local store!
So I bought a Duralast Platinum AGM H8, or group 49, and as you would imagine the numbers are better than the Yellow Top.
Duralast Platinum/Battery H8-AGM- Read6Reviews onDuralast Platinum #H8-AGM
CA - 975
CCA - 900
AH - 92
RC - 170
Here is the Yellow Top in comparison
CA - 870
CCA - 750
AH - 55
RC - 120
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From my build thread...
I started looking at dual batteries, I know I could make them fit, but it gets really expensive once you figure in the price of two batteries and the isolator system. So that killed that idea.
So I’m stuck with one battery, and I wanted something that I could exchange locally if there was another issue. That pretty much left the Duralast AGM line through AutoZone. I looked through their selection comparing specifications on each model until I said screw it, I’m getting the biggest battery they make and stock in my local store!
So I bought a Duralast Platinum AGM H8, or group 49, and as you would imagine the numbers are better than the Yellow Top.
Duralast Platinum/Battery H8-AGM- Read6Reviews onDuralast Platinum #H8-AGM
CA - 975
CCA - 900
AH - 92
RC - 170
Here is the Yellow Top in comparison
CA - 870
CCA - 750
AH - 55
RC - 120
Is that where you have your fuse panel located?
thats a big batterry
Consensus seems to be that battery tech is pretty good no matter who you buy from![]()

Well look what I scored today. For free.
I like free.
My brother traded his car in today and I took his second battery out of the trunk. Sucks we didn't have any tools though. We had to leave a bunch of his stereo system in it. FYI, cutting through 4awg with a pocket knife is not fun.
Now for a battery isolator, big 3, and build a battery tray.
Anybody recommend any isolators or kits?
I recommend going with an Automatic Charging Relay instead of an isolator. Makes things much simpler and then you don't have to be messing with remote sensing chargers and regulators.
I went with Blue Sea for my ACR. Marine rated, tough and robust.
Here is a link to the system I went with.
https://www.bluesea.com/products/7620/ML-ACR_Automatic_Charging_Relay_-_12V_DC_500A
Funny you posted that. I spent the better part of the night researching it, and the blue sea system was what I decided on. How has it worked for you?