Seeing if anyone has tackled a dual battery setup on the Defender 2020?

 

Yikes! This one will be an interesting one.

Just thinking out loud, but here are some initial thoughts:

I would assume it would be easier to do on the P300 because of the 48v mild hybrid system on the P400. Essentially, they lay a 48v system over the top of the normal 12v system which uses the same ground to body that most manufacturers do. You don't have to worry about that with the P300.

I would also be concerned about where you would place an additional battery since the the main one is under the passenger seat. I know you could place the second one anywhere, but ideally under the hood would be the best place.

I bet someone like ARB will come up with a solution, but I wonder if you need to with the increased capacity of the 48v battery.

Rob

 

Here's a link to newdefendermods instagram page. They offer very few details on their dual battery set up.

 

A bit late here but ARB offer a package for the 2020 Defender. I am gettng my done this month. 100mh Lithium batter with Redarc monitoring and charging. All hidden under the floor in the rear. Easier to do if you have the 5 seater.

 

Do you have a link to the package? I'm not finding it on their site.

 

I saw the autoplicity one on youtube.. very light on information but a cool setup and he removed his 3rd row seats to get it in there.

 

I ended up getting Redarc's Manager 30 kit with RedVision - as shown in the above video.

I've managed to remove the third row seat and get a floor in just above MHEV battery system.



I then was able to 'float' a cargo floor above this by anchoring some angle brackets into the side trim (which you can see in the image above) - I'll add additional supports once everything is wired properly.



I'd love to finish this panel off with a material similar to the diamond plate of the existing cover. Anyone have a source?

 

Here's my current wiring diagram. It's slightly complicated, but not overly so. I created this to help me organize things when it comes to actually lashing everything down.



To Note: Starter is the starter battery located under the passenger front seat. Aux is the added auxillary battery. Display is the Redarc RedVision display. Solar will eventually be a simple outlet to plug in a portable solar panel. Ignition is a simple connection to an ignition-on fuse in the local fuse panel. Shore is an outlet that will be used to connect the whole system to a 120v outlet for charging when home.

 

Thanks for the diagram. Looks great. I have a Manager30 waiting for install into my Defender, but it's my old 1990 Defender, along with 120ah lithium battery. What battery are u using for your setup?

I haven't decided if I am installing a lithium setup in the new defender yet. I have a few GoalZero Yeti 400s and solar for my fridge right now.

 

I opted for the Renogy 100Ah Lithium battery which will live here: