Kit Composition
- True® Smart Battery Isolator for all automotive models and fishing boat that rely on dual battery setup
- 1 (SBI) Smart Battery Isolator install kit with mounting screws
- 20 feet #6 high flex red cable with tinned copper cable lugs
- 3 feet #6 high flex black cable with tinned copper cable lugs
- 2 positive brass alloy battery terminal ends
- 1 negative brass alloy battery terminal end
- 3 loose crimp-on tinned copper cable lugs
- 2 sections of adhesive lined shrink tube
- 5 zip ties
- 1 – 2nd battery kit installation booklet
- 12v dual battery wiring kit diagram included
- Official retailer of True® dual battery relay kit
- Delivery: USPS first class or priority mail
Why you should have dual battery setup with automatic isolator?
Advantages of True® Heavy Duty Dual Battery Isolator Kit, designed for rugged automotive, marine, and off-road applications:
? Smart Dual Voltage Management System
- 140A Voltage-Sensitive Relay (VSR): Automatically prioritizes charging the starter battery and engages the auxiliary battery once voltage reaches 13.3V.
- Dual Sensing Technology: Detects charge from either battery—if one is being charged (e.g., via solar or shore power), both batteries receive charge.
- Automatic Separation: When voltage drops below 12.8V, the the True smart battery isolator disengages to prevent draining the starter battery.
⚙️ Heavy-Duty Build
- Waterproof & Shockproof Casing: Withstands harsh environments, including heat up to 130°C.
- Heat-Resistant Cables: Includes high-flex #6 gauge red and black cables with tinned copper lugs for secure, corrosion-resistant connections.
- Brass Alloy Terminals: Durable and conductive for long-term reliability.
? DIY-Friendly Installation
- Complete Kit: Comes with mounting screws, shrink tubing, zip ties, and a detailed wiring diagram for easy setup.
- No Factory Wire Cutting: Preserves vehicle warranty by avoiding alternator wire rerouting.
? Versatile Applications
- Ideal for trucks, RVs, boats, SUVs, and campers—especially useful for powering winches, lights, fridges, and sound systems without risking a dead starter battery.
This isolator is a favorite among overlanders, boaters, and off-roaders who need reliable power distribution for extended trips. Want help comparing it with other isolators or integrating it into your setup?