REDARC Dual Sensing Smart Start Battery Isolator 12V 100A

REDARC Dual Sensing Smart Start Battery Isolator 12V 100A

Protect your starting battery while keeping your auxiliary battery fully charged with the REDARC Smart Start® SBI12D. This 12V, 100A dual sensing battery isolator intelligently manages power between your start and auxiliary batteries, allowing external charging sources such as solar or AC chargers to recharge both batteries automatically.

The REDARC SBI12D is a microprocessor-controlled dual battery isolator designed for dual battery systems in 4WDs, overland vehicles, work trucks, RVs, and marine applications. Using intelligent dual sensing technology, it automatically isolates the start battery from auxiliary loads while allowing charging from your alternator or external charging sources.

When an external charger or solar system raises the auxiliary battery voltage above 13.2V, the SBI12D automatically reconnects the starting battery so it also receives a maintenance charge. Combined with advanced fault detection, surge protection, and low-power operation, the SBI12D delivers reliable battery management in even the harshest environments.

100A Continuous Rating • Dual Sensing Technology • External Charging Compatible • Surge Protected • Australian Engineered

Key Features

• 100A Continuous Rating: Designed for demanding 12V dual battery systems.
• Dual Sensing Technology: Allows charging from alternators, solar systems, and AC battery chargers.
• Automatic Battery Isolation: Protects the start battery from excessive discharge.
• External Charge Sharing: Automatically charges the start battery once the auxiliary battery reaches 13.2V.
• Microprocessor Controlled: Intelligent battery management for dependable operation.
• Fault Detection: LED indicators alert users to voltage drops, over-voltage, and excessive current conditions.
• Fully Surge Protected: Helps protect sensitive vehicle electronics.
• Silver Contacts: Long-life contacts suitable for automotive and marine environments.

Why It Performs

• Protects Your Starting Battery: Prevents auxiliary loads from discharging the battery needed to start your vehicle.
• Supports Multiple Charging Sources: Works seamlessly with solar panels, AC chargers, and alternator charging systems.
• Reduced Voltage Loss: Solenoid-based design avoids the voltage drop associated with diode-style isolators.
• Power Saving Technology: Minimizes standby current while maintaining intelligent battery management.
• Built for Harsh Conditions: Ideal for off-road, commercial, RV, and marine applications.

Technical Specifications

• Brand: REDARC
• Part Number: SBI12D
• Product Type: Smart Start Dual Sensing Battery Isolator
• System Voltage: 12V DC
• Continuous Current Rating: 100 Amps
• Battery Sensing: Dual Sensing
• Charging Sources Supported:
  • Vehicle Alternator
  • Solar Charging Systems
  • External AC Battery Chargers
• Auxiliary Battery Charge Threshold: 13.2V (for start battery charging)
• Protection Features:
  • Fault Detection
  • LED Status Indication
  • Surge Protection
  • High Voltage Transient Protection
• Contact Material: Silver Contacts
• Suitable Applications: Automotive, Commercial, RV, Marine

What's Included

• (1) REDARC SBI12D Dual Sensing Smart Start Battery Isolator
• Installation Instructions

Ideal For

• 4WD Dual Battery Systems
• Overland Vehicles
• Pickup Trucks
• Commercial Vehicles
• Camper Vans
• RVs
• Marine Applications
• Solar Charging Systems
• Auxiliary Battery Installations

Why Choose the REDARC SBI12D?

• Automatically protects your vehicle's starting battery.
• Supports alternator, solar, and external AC charging.
• Dual sensing technology keeps both batteries properly maintained.
• Silver contacts provide long service life and marine compatibility.
• Microprocessor-controlled operation maximizes charging reliability.
• Designed and engineered for demanding off-road and commercial applications.

Why Buy from Expedition Superstore?

• Authorized REDARC Dealer: Shop genuine REDARC battery isolators, battery chargers, battery management systems, wiring kits, and off-grid power solutions.
• Complete Dual Battery Solutions: Everything you need to build a dependable auxiliary power system in one place.
• Expert Technical Support: Our experienced team can help you select the right battery isolator and supporting components for your vehicle.
• Free Shipping: Enjoy free shipping on qualifying orders over $349 so you can spend less on freight and more on your next adventure.
• Need help building your dual battery system? — Schedule your build chat today!