Found a better price? We’ll do our best to beat it.

Found a better price? Contact us — we’ll do our best to beat it. Call (214) 412-7879 or email us.

FATHER’S DAY SALE: 5% OFF SITEWIDE!
No code needed. Discount automatically applied at checkout.

Skip to product information
1 of 4

REDARC Smart Start Battery Isolator 12V100A

REDARC Smart Start Battery Isolator 12V100A

Regular price $145.00 USD
Regular price Sale price $145.00 USD
Free Shipping $250+ Authorized Dealer Manufacturer Warranty

Ships in 1–3 business days

Delivery typically 5–14 business days

Why buy from Off Road Specialty
  • Authorized dealer for trusted off-road brands
  • Ships from trusted U.S. distribution partners
  • Fitment support before and after purchase
  • Tracking provided on every order
  • Secure checkout (Apple Pay, PayPal, Shop Pay)

SKU:SBI12

View full details
🧾 Overview

The REDARC Smart Start 12V 100A Battery Isolator is designed to automatically manage charging between a vehicle’s start battery and auxiliary battery. It ensures the start battery is protected while allowing efficient charging of the auxiliary battery during vehicle operation.

Engineered for reliability, this isolator engages and disengages based on battery voltage, making it ideal for dual-battery systems in overland, touring, and work vehicles that require dependable power management.

✔ Automatic dual-battery management
✔ Protects vehicle start battery
✔ 100A current rating
✔ Ideal for auxiliary battery systems

🛠 Installation
  • Install inline between start and auxiliary batteries following REDARC wiring guidelines.
📌 Specs
  • Key Features & Benefits
  • Automatic voltage-sensing operation
  • Prevents battery drain
  • Supports auxiliary battery charging
  • Durable, proven design

📘 Specifications

  • Brand: REDARC
  • Voltage: 12V
  • Current Rating: 100A
  • Product Type: Battery Isolator
  • Application: Dual-battery systems
  • Sold As: Each

📦 What’s Included (What’s in the Box)

  • Smart Start 12V 100A battery isolator
  • Installation instructions
  • Not included: Wiring, batteries, mounting hardware

🛡 Warranty

  • Manufacturer-backed warranty provided by REDARC
⚠️ Fitment Notes
  • Universal application (12V dual-battery systems)

⚠️ Fitment Notes

  • Suitable for systems requiring up to 100A. Ensure proper cable sizing and fusing.