Dual Battery Isolators

As a microprocessor-controlled battery isolator, the REDARC Smart Start SBI is equipped with a power-saving technology that provides cost-effective protection for the primary battery in a safe and convenient way by using your alternator to charge your auxiliary battery.

You provide the adventure, we’ll provide the power. Choose from our range of dual battery in-vehicle isolators to help protect the starter battery’s excessive discharge, allowing your auxiliary battery to power your accessories.

Need help?

For help in choosing the best dual battery setup for your needs use the free REDARC dual battery selector.

Smart Start SBI 12V 100A

Smart Start SBI 12V 100A

SBI12

The REDARC Smart Start® SBI12 is a 100A 12V microprocessor-controlled battery isolator which prot...
$109.98 USD
Smart Start SBI 12V 200A

Smart Start SBI 12V 200A

SBI212

The REDARC Smart Start® SBI212 is a 200A 12V battery isolator used as a solenoid priority system ...
$223.74 USD
Smart Start SBI 24V 100A

Smart Start SBI 24V 100A

SBI24

The REDARC Smart Start® SBI24 is a 24V 100A dual battery isolator used to isolate the start and a...
$132.74 USD
Smart Start SBI 24V 200A

Smart Start SBI 24V 200A

SBI224

The REDARC 200A 24V Smart Start® SBI224 protects the start battery from excessive disch...
$242.68 USD
Dual Sensing Smart Start Battery Isolator 12V 100A

Dual Sensing Smart Sta...

SBI12D

The REDARC Smart Start® SBI12D is a 100A 12v dual battery isolator used in a dual battery system....
$130.83 USD
Dual Sensing Smart Start Battery Isolator 12V 200A

Dual Sensing Smart Sta...

SBI212D

The REDARC Smart Start® SBI212D is a 12v 200A dual battery isolator used in a dual battery system...
$258.41 USD
Dual Sense Smart Start Battery Isolator 24V 100A

Dual Sense Smart Start...

SBI24D

The REDARC Smart Start® SBI24D is a 24V 100A dual battery isolator that is used to isolate start ...
$153.30 USD
Dual Sensing Smart Start Battery Isolator 24V 200A

Dual Sensing Smart Sta...

SBI224D

The 24V 200A REDARC Smart Start® SBI224D primarily used in commercial vehicles to protect the st...
$280.29 USD
Smart Start Battery Isolator & Wiring Kit 12V

Smart Start Battery Is...

SBI12KIT

The Smart Start® Dual Battery Isolator and Wiring Kit (SBI12KIT) is equipped with everything need...
$215.50 USD