How to install the REDARC Smart Battery Isolator | DIY SBI Install

Tim Chivers, Area Sales Manager for Victoria, guides you through the DIY installation of the REDARC SBI dual battery isolator.

The REDARC Smart Start® SBI is designed to be used in multi-battery applications as a solenoid priority system to protect the start battery from excessive discharge, while allowing the auxiliary battery to supply non-essential loads.

[MrPatrickRevuelta]

Purchased my patrol with this Redarc set up, but didn't really know how an isolater worked until now. Thanks!

[mavo]

i have 1 of these units in my 4x4 and it is a great little unit i have the jump start button as well and when I'm driving and the unit is running its put from 14 to 14.4 volts into the 2nd battery i wouldn't have any other unit and mine dose everything that is out lined in this video .. That over ride button is a life save

[Tom-scux]

What size cable should be used for the override switch/button?

[neileveritt]

Don't mean to be picky but from my understanding of your documentation the min. recommended cable size (4 or 6 B&S) is determined by the length of run <3m or >3m not the voltage 12 v or 24 v. correct me if I am wrong but that's how I understand the instruction .

[WillOrr-kfer]

Hi, a few months ago i installed this unit into my old hilux to run my fridge off my 120ah auxiliary battery. It worked great for a few weeks but gradually my car was getting harder and harder to start. Its at the point now that sometimes i cannot start my car unless i turn off my fridge. I am unsure of what the issue is because the isolator seems to charge the batteries fine. Any help would be appreciated.

[Simplicity]

Great video! Is one of these needed if you have a smart alternator? I’m hooking up through the Redvision TVMS

[Jimmy_Saf]

Can’t you cut and extend the negative cable from the SBI if it is too short?

[billybaloneey]

Near the start of the video you show how to wire up a winch using a relay and the SBI blue wire...if I want to wire up the Option #3 (the jump start assist), can I do that by tapping off of the blue wire relay connection? Also Option #3 does not show the inclusion of a LED indicator lamp, can the LED lamp be added to the Option #3 wiring diagram?

[mrpinify]

If you’re running a dc-dc charger with solar input between your lead acid crank battery and lithium auxiliary battery. Will using the override jump start function cause any damage to the charger or auxiliary battery?

[guyravell]

I am installing your SBI12 in my dual battery set up. As I’m putting the auxiliary battery in the tray, what size cable do i run from the SBI to the auxiliary battery? Length of cable is approximately 4.5m. Also the main load is an Engle fridge/freezer and some LED lighting.

[Ful-OGold]

Why does my unit keep throwing the 100amp circuit breaker when I plug in my dcdc charger?

[tarkanatar]

Hi. I have one of these in my dual battery system as well but I'm not sure if there's something wrong with mine as when my vehicle is off any accessories on the 2nd battery won't work and my voltage drops dramatically if the red LED light isn't on.

[tddirtygq]

Hi nice video mate just a quick question with the push start button dose it have to be a high amp button or can I use a 5a is ok to use I can't find eny information eny where if you can help me by answering it it will be good thanks 👍🏾

[lukeclarke]

Would the alternator have to be upgraded for the extra battery? Looks like a good bit of kit.

[hankgs]

should I get this to charge my trailer batteries running wires and fuses from my vehicle batterry to an Anderson plug on the rear bumper....?

[lukeneave]

My auxiliary battery set up in the rear of my wagon plan on running the earth wire back to the main battery or should I just earth it rear seats bolt as I’ve removed the seats?

[butchy]

Hi mate grate vid can i ask, can you use the blue over ride wire for winch and battery to battery jump? or can you only use one thing off it at a time

[jack-o]

Hi Team redarc.
On the SBI there are two nuts just under the Square control model (indicator). Just wondering what the nuts are for??
Cheers 🤙🏻

[ChristiannTyler]

I have a question regarding that bridge device for jump starting. Is there a way to manually use that feature if you don’t have the button installed?

[scottmackay]

How long would it take to charge a flat 100ah battery?