Redarc Smart Start Battery Isolator 12V 100A SBI12
The REDARC'smart Start SBI12 is a microprocessor-controlled battery isolator which protects the start battery from excessive discharge, while allowing the auxiliary battery to supply charge to non-essential loads. It is used as a solenoid priority system in dual battery systems and provides 12V DC incorporating 100A of continuous ratings. The SBI range manages battery charge for your secondary battery while on the move. The battery isolator is mostly used in 4WD and commercial vehicles. It incorporates electronic components that prevents the solenoid from generating high voltage transients. Due to the voltage drop associated with diode type isolation, it's better than a diode battery isolator. A low standby current draw and fault detection and LED indication of operation warns users of faults such as voltage drops, over-voltage, and excessive current draw conditions. Safely maintain the charge your dual battery system with the Smart Start SBI12 battery isolator. Installation Instructions Brochure - A general brochure describing a brand, company, product line. If brochure in question is for a specific product, use code PDB.
The REDARC'smart Start SBI12 is a microprocessor-controlled battery isolator which protects the start battery from excessive discharge, while allowing the auxiliary battery to supply charge to non-essential loads. It is used as a solenoid priority system in dual battery systems and provides 12V DC incorporating 100A of continuous ratings. The SBI range manages battery charge for your secondary battery while on the move. The battery isolator is mostly used in 4WD and commercial vehicles. It incorporates electronic components that prevents the solenoid from generating high voltage transients. Due to the voltage drop associated with diode type isolation, it's better than a diode battery isolator. A low standby current draw and fault detection and LED indication of operation warns users of faults such as voltage drops, over-voltage, and excessive current draw conditions. Safely maintain the charge your dual battery system with the Smart Start SBI12 battery isolator. Installation Instructions Brochure - A general brochure describing a brand, company, product line. If brochure in question is for a specific product, use code PDB.
The REDARC'smart Start SBI12 is a microprocessor-controlled battery isolator which protects the start battery from excessive discharge, while allowing the auxiliary battery to supply charge to non-essential loads. It is used as a solenoid priority system in dual battery systems and provides 12V DC incorporating 100A of continuous ratings. The SBI range manages battery charge for your secondary battery while on the move. The battery isolator is mostly used in 4WD and commercial vehicles. It incorporates electronic components that prevents the solenoid from generating high voltage transients. Due to the voltage drop associated with diode type isolation, it's better than a diode battery isolator. A low standby current draw and fault detection and LED indication of operation warns users of faults such as voltage drops, over-voltage, and excessive current draw conditions. Safely maintain the charge your dual battery system with the Smart Start SBI12 battery isolator. Installation Instructions Brochure - A general brochure describing a brand, company, product line. If brochure in question is for a specific product, use code PDB.
The REDARC'smart Start SBI12 is a microprocessor-controlled battery isolator which protects the start battery from excessive discharge, while allowing the auxiliary battery to supply charge to non-essential loads. It is used as a solenoid priority system in dual battery systems and provides 12V DC incorporating 100A of continuous ratings. The SBI range manages battery charge for your secondary battery while on the move. The battery isolator is mostly used in 4WD and commercial vehicles. It incorporates electronic components that prevents the solenoid from generating high voltage transients. Due to the voltage drop associated with diode type isolation, it's better than a diode battery isolator. A low standby current draw and fault detection and LED indication of operation warns users of faults such as voltage drops, over-voltage, and excessive current draw conditions. Safely maintain the charge your dual battery system with the Smart Start SBI12 battery isolator. Installation Instructions Brochure - A general brochure describing a brand, company, product line. If brochure in question is for a specific product, use code PDB.
in 31 offers
The lowest price for Redarc Smart Start Battery Isolator 12V 100A SBI12 right now is $173.09 at Auto Parts Co, compared across 31 retailers.
The all-time low was $149.00 on 27 Feb 2026 — today's price is 16% above the lowest ever. That's a little above the best price we've seen.
Prices last updated 26 June 2026.
Last updated at 26/06/2026 16:52:33
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originally posted on autobarn.com.au
Best in the business, great price too! Great to have installed when you run additional dual battery gear under the bonnet for a simple non lithium battery set up
originally posted on repco.com.au
Great bit of gear. Keeps the starter battery from draining. Job done.
originally posted on ebay.com
The quality of the product you cant go past a Redarc brand. I fit these through out all my mates 4w4 and boats. Thanks
| Input (Operating) Voltage | 12VDC |
| Output Current Rating (Cont.) | 100A |
| Input Fuse Rating | 60A |
| Output Fuse Rating | 60A |
| Warranty | 2 Years |
Redarc Redarc Smart Start SBI 12V 100A?SBI12
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Redarc Smart Start SBI 12v 100a Dual Battery Isolator
Free delivery between 1–10 July
Redarc Smart Start SBI 12V 100A
Delivery $26
REDARC SBI12 SMART BATTERY ISOLATOR
Free delivery
Redarc Battery Isolator 12v 100A - SBI12
Best in the business, great price too! Great to have installed when you run additional dual battery gear under the bonnet for a simple non lithium battery set up
Great bit of gear. Keeps the starter battery from draining. Job done.
The quality of the product you cant go past a Redarc brand. I fit these through out all my mates 4w4 and boats. Thanks
Great little battery isolator that does not need to be any smarter than it is.
Operator error, when I read instructions no problem
Happy days, easy to install and works a treat, plus it's good having full faith in a redarc product to protect cranking battery
I've installed the SBI and ran the conductor to the rear bumper where I installed the TrailerVision Anderson 50A connector. Once I have all the other components installed and connected, I'll know better how it ultimately performs. So far, the correct voltage is present at the connector. The instructions were detailed and straightforward. Installation was easy for me.Thank you to the Redarc team for answering questions promplty and facilitating a return of the incorrect item I originally purchased, and purchase of the correct SBI.
Installed to make a trip on only 100 miles. So far so good.
I do a lot of extreme bushwork and could be out there for long periods. having the knowledge that my food and drinks are cold and not drain my start battery gives me that extra piece of mind out here in the Pilbara heat and isolation. I have fitted this product to all of my cars and I am impressed at it"s simplicity of installation and the value of the product. well done and thank you
great product with easy instructions. simple set up and effective
| Input (Operating) Voltage | 12VDC |
| Output Current Rating (Cont.) | 100A |
| Input Fuse Rating | 60A |
| Output Fuse Rating | 60A |
| Warranty | 2 Years |
