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Home / Lighting / Driving & light bars

Redarc SBI212 isolator from the front with the mounting bracket fitted, the red control module labelled designed and manufactured in Australia, the blue override lead and the black earth lead with its ring terminalRedarc SBI212 isolator lying on its side, showing the compliance label with the Australian manufacture marking, the SBI212 part number and barcode, and the mounting bracket bolted to the bodyRedarc Smart Start SBI212 isolator seen from above, showing the two heavy black-capped studs, the smaller signal stud between them, the brass link bar and the red control module clipped to the side

Redarc

Smart Start SBI 24V 200A SBI224

SBI224

The REDARC Smart Start SBI224 24V 200A Battery Isolator is a microprocessor-controlled dual battery isolator designed to manage the charging of auxiliary batteries in 24V systems. It ensures that the start battery is protected from excessive discharge by isolating it…

$435.00

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Backorder Note from Manufacturer Warranty Information Vehicle Installation Information Pickup or Shipping FAQ Specifications Dimensions Features Included

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Suitable for 24V vehicles, including commercial trucks, 4WDs, motorhomes, buses, and marine applications.

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The REDARC Smart Start SBI224 24V 200A Battery Isolator is a microprocessor-controlled dual battery isolator designed to manage the charging of auxiliary batteries in 24V systems. It ensures that the start battery is protected from excessive discharge by isolating it from the auxiliary battery when the engine is off, while allowing the auxiliary battery to power non-essential loads.

Once the start battery reaches a predetermined voltage, the SBI224 automatically connects both batteries, allowing the auxiliary battery to be charged. This system is ideal for vehicles with dual battery setups, such as commercial trucks, RVs, and marine applications.

  • Protects start battery from discharge
  • Automatically connects/disconnects based on voltage
  • Works with 24V dual battery systems
  • Simple and compact installation
  • Durable design for harsh conditions

Voltage: 24V

Current Rating: 200A continuous

Cut-In Voltage: 26.4V

Cut-Out Voltage: 25.6V

Standby Current Draw: <5mA

Ignition Override: Yes

Warranty: 2 Years

















Length: 90mm

Width: 95mm

Height: 100mm

Weight: 0.6kg

Source: manufacturer-verified

Everything this install needs

0 of 0 in the box


Install close to the start battery using appropriate gauge wire and fuse protection. Wiring kits are available separately.

Professional installation recommended for best results.

SBI224 Instruction Manual EN

SBI224 Install Guide EN DE ES FR IT PL AR

Suitable for 24V vehicles, including commercial trucks, 4WDs, motorhomes, buses, and marine applications.

Q: Does this protect my start battery?
A: Yes, it disconnects the auxiliary battery when voltage drops too low.

Q: Is it waterproof?
A: It is weather-resistant but not fully waterproof—mount in a protected location.

Q: Can it be used with lithium batteries?
A: Not recommended—use a lithium-compatible isolator.

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