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Redarc Smart Start SBI12D dual sensing battery isolator, the red Redarc housing mounted on a solenoid with two heavy studs on top, a zinc-plated mounting bracket underneath, and the earth lead and blue sense wire already fittedRedarc Smart Start SBI 12V 100ARedarc Smart Start SBI 12V 100ARedarc Smart Start SBI 12V 100A

Redarc

Smart Start SBI 12V 100A

SBI12

The REDARC Smart Start SBI12 is a 12V 100A battery isolator designed to protect your start battery while allowing your auxiliary battery to be charged. Ideal for dual battery setups in 4WDs, campers, caravans, and marine applications, the SBI12 ensures…

$175.00

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Important note

REDARC’s SBI12 offers automatic battery isolation to ensure your start battery is protected, while your auxiliary battery receives a safe, efficient charge.

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Ideal for 12V dual battery systems in 4WDs, RVs, campers, marine setups, and touring vehicles.

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The REDARC Smart Start SBI12 is a 12V 100A battery isolator designed to protect your start battery while allowing your auxiliary battery to be charged. Ideal for dual battery setups in 4WDs, campers, caravans, and marine applications, the SBI12 ensures your main battery is never drained by accessories or appliances.

This microprocessor-controlled isolator engages when your start battery reaches 13.2V and disengages at 12.7V, ensuring reliable and safe charge distribution. Built tough for Australian conditions, it’s fully sealed against dust, water, and vibration.

Compact, robust, and easy to install, the SBI12 is your go-to solution for a smart dual battery system.

  • Protects start battery from discharge
  • Automatically connects/disconnects auxiliary battery
  • Vibration, dust, and splash resistant
  • Compact & easy to install
  • Suits standard and smart alternators

Voltage: 12V DC

Continuous Current Rating: 100A

Surge Rating: 400A

Turn On Voltage: 13.2V

Turn Off Voltage: 12.7V

Housing: Sealed, solid-state

Ignition Override: Yes

Weight: 200g







Length: 75mm

Width: 70mm

Height: 80mm

Weight: 0.2kg

Source: manufacturer-verified

Everything this install needs

0 of 0 in the box

Compact, plug-and-play design. Easy to install with REDARC wiring kits. Mount close to the start battery.

SBI12 Instruction Manual EN

SBI12 Install Guide EN DE ES FR IT PL AR

SBI Brochure

Ideal for 12V dual battery systems in 4WDs, RVs, campers, marine setups, and touring vehicles.

Q: Does this unit charge both batteries?
A: It charges the auxiliary battery while protecting the start battery. For dual sensing, check the SBI12D model.

Q: Is a fuse kit required?
A: Yes, REDARC recommends using a fuse kit for safe operation.

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