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Dual Battery System Design
Posted:
Wed, 24 May 2017 5:29 +0000by fullewat
Hi all,
Has anyone got any pictures of dual auxiliary batteries (2 aux and crank battery), that they have mounted in the tub of a dual cab SR5?
I'd like to mount them both in a bracket over the rear right wheel arch, but can't find a bracket of this type.
My final setup would look something like:
Dual Aux batteries in rear tub (100ah each)
Redarc BCDC1240LV
Redarc Relay Kit RK1260 (for solar and alternator input)
160w Solar panel
Linked with correct fuses and 6B&S cable
This would be to run all the usual 12v camp gear, lights, plugs, usb, fridge etc. I'd like 2 aux batteries for greater capacity.
Any pictures or advice would be greatly appreciated!
Re: Dual Battery System Design
Posted:
Wed, 24 May 2017 8:38 +0000by fracturedranga
Re: Dual Battery System Design
Posted:
Wed, 24 May 2017 1:35 +0000by fullewat
I must have missed something, I checked that thread!
Re: Dual Battery System Design
Posted:
Wed, 24 May 2017 3:07 +0000by adamkberger
Why do you need the relay kit when the 1240 has an inbuilt solar input?
Re: Dual Battery System Design
Posted:
Wed, 24 May 2017 4:29 +0000by fracturedranga
You need a changeover relay so it swaps from alternator to solar when you turn the ute off. Theyre about $10 from jaycar
Re: Dual Battery System Design
Posted:
Wed, 24 May 2017 4:34 +0000by TOYZX
If ya get the new redarc charger (cant remember the part number) it has all the solar stuff built into it. It will charge on whatever is producing the most power, alt/solar.
Sent from my SM-N920I using Tapatalk
Re: Dual Battery System Design
Posted:
Wed, 24 May 2017 5:17 +0000by Richolux150
Re: Dual Battery System Design
Posted:
Wed, 24 May 2017 5:22 +0000by TOYZX
Thats the one boss.[WINKING FACE]
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Re: Dual Battery System Design
Posted:
Wed, 24 May 2017 8:55 +0000by fullewat
I've been told with 2 auxiliary batteries, the 1240 will give a better charge than using a 25 amp version. Also, due to the new alternator in the N80, I believe the LV model is required. Thus, using a 1240LV model, an external relay is needed.
correct me if I'm wrong?
Re: Dual Battery System Design
Posted:
Wed, 24 May 2017 9:53 +0000by TOYZX
Nah with the new system you can choose from three different cut in/cut out voltages depending on the battery you are running. Regardless of what the alternator is doin, it does its own thing.
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Re: Dual Battery System Design
Posted:
Sun, 05 Jul 2020 1:59 +0000by tommmo90
Be keen to hear if you found a solution? I couldn’t in my searching, and decided to make this myself.. Houses 130Ah AGM, 20A Solar regulator, Fuse Box with plenty of room for Chargers and Inverters down the track. Bolted to the tray and lockable which was important for me with only a soft Tonneau.
