Dual battery setup

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Good afternoon.

I own an 80 series Land Cruiser and will be eventually building up our 5th Gen for off road, overland work.

Who here is running dual batteries and has some pictures and details of their setup?

The C4 2nd battery tray and the Rago battery tray are on my radar as I like the location of the battery being on the passenger side. The C4 tray is clean but really doesn't have the options to mount a Blue Sea ML-ACR or a RedArc Dual battery charger where the Rago does.

As far as wiring I am looking at using 4 gauge wire for inside the engine bay as well as run back to the drawer system for the inverter and extra power sources in the back.

In the future I am thinking of adding a RTT and mounting solar to it to charge the batteries while parked longer term or while camping.

I am looking at running AGM batteries in the 5th gen as well. The starting will be a 34R from Interstate and the 34M deep cycle AGM from Interstate as well. These are the same batteries I run in my Land Cruiser and they work great.

Below is a rough drawing that someone came up with. One thing I will be adding is the Blue Sea fuse block pictured below. There will be 2, one on the starting battery and the second on the house battery:

1736022852634.png


Below is the schematic I am going to use for reference when wiring things in. Yes there are other wires from the Blue Sea ML-ACR and the Red Arc DCDC charger that need to be wired in but this give me a general idea.

DCDC Blue Sea.jpeg


Lastly does anyone know if the alternator on the 5th gen is a smart alternator? Does it fluctuate voltage output based on needs of the electrical system?
 
Good afternoon.

I own an 80 series Land Cruiser and will be eventually building up our 5th Gen for off road, overland work.

Who here is running dual batteries and has some pictures and details of their setup?

The C4 2nd battery tray and the Rago battery tray are on my radar as I like the location of the battery being on the passenger side. The C4 tray is clean but really doesn't have the options to mount a Blue Sea ML-ACR or a RedArc Dual battery charger where the Rago does.

As far as wiring I am looking at using 4 gauge wire for inside the engine bay as well as run back to the drawer system for the inverter and extra power sources in the back.

In the future I am thinking of adding a RTT and mounting solar to it to charge the batteries while parked longer term or while camping.

I am looking at running AGM batteries in the 5th gen as well. The starting will be a 34R from Interstate and the 34M deep cycle AGM from Interstate as well. These are the same batteries I run in my Land Cruiser and they work great.

Below is a rough drawing that someone came up with. One thing I will be adding is the Blue Sea fuse block pictured below. There will be 2, one on the starting battery and the second on the house battery:

View attachment 3808083

Below is the schematic I am going to use for reference when wiring things in. Yes there are other wires from the Blue Sea ML-ACR and the Red Arc DCDC charger that need to be wired in but this give me a general idea.

View attachment 3808091

Lastly does anyone know if the alternator on the 5th gen is a smart alternator? Does it fluctuate voltage output based on needs of the electrical system?
IMG_3778.jpeg

SDHQ dual battery setup. Using Odyssey Extreme 34s.

Great setup. Comes with everything thing you need for install. EVERYTHING, minus tools, Easy to install. Can't recommend enough.
 
View attachment 3810403
SDHQ dual battery setup. Using Odyssey Extreme 34s.

Great setup. Comes with everything thing you need for install. EVERYTHING, minus tools, Easy to install. Can't recommend enough.
With the 2nd battery why are you running so much off the main battery? I see you have the fuse panel in the lower left of the picture are you re-doing things?
 
Lots has been reworked since this photo haha. Very messy in this photo
Okay, I assumed but wanted to make sure.

If I had the extra 1200 for that kit I would get it. I love idea how they label all the cables so you cant screw up. Sucks there is no room for a Red Arc DC-DC charger to mount. I probably could figure out a place to mount one.
 
In your schematic you show both a Blue Sea VCR and a Red Arc DC/DC controller... I think you want just one or the other, correct? As in, they do the same thing other than one of them can manipulate charging voltage, while the other can combine both batteries.

the only video I have of this is my Tundra setup, which as been working well even with the obvious flaw of a simple Blue Sea switch & AGM 2nd battery... but I offset that with solar, and not worrying about it.
 
In your schematic you show both a Blue Sea VCR and a Red Arc DC/DC controller... I think you want just one or the other, correct? As in, they do the same thing other than one of them can manipulate charging voltage, while the other can combine both batteries.

the only video I have of this is my Tundra setup, which as been working well even with the obvious flaw of a simple Blue Sea switch & AGM 2nd battery... but I offset that with solar, and not worrying about it.

You are correct, a disconnect would be better suited for that schematic.
 

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