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Old 01-16-2021, 06:02 PM #31
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First off I would avoid putting your BCDC in the engine bay. I know that people do it but Redarc does not recommend doing it as it will be prone to overheating and be much less efficient. Put it out in front of the radiator with a Prado 150 mount if you can. Out of Town 4X4 in Australia has one as well as Redarc Australia. BCDC Mounting Bracket to suit Toyota LandCruiser Prado 150 | REDARC Electronics The mounting is exactly the same as on the Prado, but you have to move the horn mount a bit, it will be a much cleaner install. I would also use the Blue Sea Systems MRBF Surface and Terminal Mount Fuse Blocks. They mount right onto the battery terminal so that all cabling is protected, also easier to install and cleaner.
Heres my set up. You can see the Redarc 1240d just to the right of the hood latch.
Attached Images
Help with Dual Battery setup Redarc1225D-20191209_201458-jpg  Help with Dual Battery setup Redarc1225D-0002351_bcdc-mounting-bracket-suit-toyota-prado-150-landcruiser-png  Help with Dual Battery setup Redarc1225D-71dypdusfdl-_ac_sl1500_-jpg 
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Last edited by ruff4runner; 01-16-2021 at 06:06 PM. Reason: left something out
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Old 06-19-2021, 02:30 PM #32
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Quote:
Originally Posted by SnoRnR View Post
I am in the process of purchasing the parts for my dual battery install next month. I have already installed the Shrockworks Dual battery kit.
Thanks for posting and updating this! I recently did a dual-battery setup, and found your journey helpful. I'll add a bit (which I hope may help others).

Quote:
Odyssey PC34R-1500 68AH (34Ah usable for 50% SOC)
Redarc BCDC 1225D
I went cheaper (although I have used and like Odyssey), opting for a Costco Energizer AGM. Delivered to my door (thanks, COVID-delivery guys!).

Quote:
Draw while camping
Helpful, and it's great that you figured out your loads. When you plan and prepare like this, it's almost just simple accounting. I say "almost" because many devices are sensitive to depth-of-discharge and may stop working. And some folks will use battery boosters to maintain voltage to the device even as the battery terminal-voltage drops. My own rule-of-thumb is to only figure on 1/2 the listed battery-capacity, both for life, and reliability.

In my case, I enjoy ham-radio operation, and wanted my AUX battery to carry me through evenings and weekends of radio-operation. I also have future dreams of a winch.

Quote:
1) Redarc states 6AWG wire for our cable lengths. So, going with 8 AWG
For my Redarc hookups, I used 6AWG. I felt like it. It's more than what is necessary.

Quote:
8) Is it ok to earth the AUX battery to the chassis/frame?
I did this. I actually chose to use TWO ground-cables, one attached to the inner-fenderwell up by the air-box and the other down lower behind the headlight (both were 6mmx1.0 bolts, where 5/16" ring-terminals work nicely). For my future dream winch, it will have it's NEG attached to the same bolt behind the headlight, and my ham-radio NEG will pick up from the bolt by the airbox. I changed both these bolts to stainless, and added nickel-anti-seize everywhere to guard against corrosion. I also neatly scraped paint off the horn so it's a reliable member of the conduction team.

Each Ground was made from 2/0 welding cable, with hydraulically-crimped ends, which were also soldered and heat-shrunk.

Quote:
Trying to streamline the cable buying.
This was a weakness for me - I was slow and piece-meal. I kept asking myself, at each step: What is The Best? Then I would buy. I had no urgency, and this is more than half-hobby for me, so i enjoyed the journey.

Extras:
I am in Canada, and got the Comfort+ Complete package from Toyota. This includes an AC battery-maintainer which is pretty small. It would have made the Redarc turn on, draw too much, shutdown, turn-back-on, Redarc restart, shutdown, etc. So, I had to use a relay to only connect the Redarc to my Main Battery when the IGNition is RUNning.

Further, over the past decades, I've been in the boonies for a several days, and like the peace-of-mind of being able to jump-start my Main Battery. So I added a Cole-Hersee continuous-duty solenoid (200A cont, 600A intermittent) to let me "combine" the batteries in circumstances where I need to jump-start myself, or when I may wish to have the Main battery assist the Aux in prolonged winching.
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Old 06-21-2021, 05:17 PM #33
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Quote:
Originally Posted by ruff4runner View Post
First off I would avoid putting your BCDC in the engine bay.
Heres my set up. You can see the Redarc 1240d just to the right of the hood latch.
I'll second this (keep the BCDC out of the heat). I looked at the Prado mount, but it was going to be costly and slow to get this (all the way from Australia; at the time I was looking, there were none in-stock elsewhere, so mine would be a special delivery

My choice was to go with Off-Grid Engineering, and their Redarc BCDC Mount/ Battery Tray. This has a vertical mounting surface for the BCDC, and an orthogonal plate which is captured beneath the stock battery - simple!

I think this behind-headlight location is relatively cool, but then cooling is enhanced by the "prop-wash" of the mechanical engine-fan.
Attached Images
Help with Dual Battery setup Redarc1225D-oge_bcdc_mnt_brkt-jpg 
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Old 06-21-2021, 06:04 PM #34
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Quote:
Originally Posted by ruff4runner View Post
First off I would avoid putting your BCDC in the engine bay. I know that people do it but Redarc does not recommend doing it as it will be prone to overheating and be much less efficient. Put it out in front of the radiator with a Prado 150 mount if you can. Out of Town 4X4 in Australia has one as well as Redarc Australia. BCDC Mounting Bracket to suit Toyota LandCruiser Prado 150 | REDARC Electronics The mounting is exactly the same as on the Prado, but you have to move the horn mount a bit, it will be a much cleaner install. I would also use the Blue Sea Systems MRBF Surface and Terminal Mount Fuse Blocks. They mount right onto the battery terminal so that all cabling is protected, also easier to install and cleaner.
Heres my set up. You can see the Redarc 1240d just to the right of the hood latch.
@ruff4runner -- can you show how the Prado 150 mount attaches?
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Old 06-21-2021, 06:16 PM #35
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I’m not going to argue that more cooling isnt better but I’ve had mine mounted deep in the engine bay for two years with no issues whatsoever. It’s been through extended 100+ F long trail days and never skipped a beat.




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Old 06-24-2021, 11:09 AM #36
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Quote:
Originally Posted by ttime4four View Post
@ruff4runner -- can you show how the Prado 150 mount attaches?
It mounts in front of the radiator on the left side right where the horns are, so you have to move the horns. The mount fits just as it does in the Prado 150. I cut out a hole in the radiator cover so I could see the LED readout.
Attached Images
Help with Dual Battery setup Redarc1225D-20190829_091132-jpeg  Help with Dual Battery setup Redarc1225D-20190829_091149-jpeg  Help with Dual Battery setup Redarc1225D-20190812_181401-jpeg 
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