Trusted by Leading Brands A TRUE® exclusive! Why Choose a Lithium Dual Battery Isolator Kit? When running LiFePO₄ (Lithium Iron Phosphate) auxiliary batteries, a standard isolator isn’t enough. Lithium batteries have unique charging requirements, and using the wrong kit can shorten their lifespan or leave them undercharged. A Lithium Dual Battery Isolator Kit is purpose-built to handle these needs, making it the smarter choice for modern van builds, off-road rigs, and audio systems Key Reasons to Choose Lithium-Compatible KitsOptimized Charging ProfileDesigned specifically for lithium batteries, ensuring proper voltage regulation and safe charging from your alternator.Starter Battery ProtectionAutomatically disconnects the auxiliary battery when voltage drops, preventing your main battery from draining and keeping your vehicle ready to start.High EfficiencyLithium isolators minimize voltage drop, allowing faster charging and better performance compared to traditional isolators.Durability Under LoadBuilt to handle high-current demands from inverters, fridges, lighting, or audio systems without overheating or failure.Future-Proof TechnologyAs more van conversions and car audio builds move to lithium, having a lithium-ready isolator ensures compatibility for years to come.Compact & Complete KitIncludes heavy-duty cables, lugs, shrink tubing, and installation accessories, making it easy to set up even in tight spaces. Testimonials “I run a 2021 Chevy Silverado with dual batteries, a winch, and a sound system with a large speaker setup that hits hard. Before installing the True® Large Battery Isolator, I was always second-guessing my setup—especially during long job sites or weekend overlanding trips.This isolator changed everything. It automatically manages the charge between my starter and auxiliary batteries without me lifting a finger. No switches, no worries. I can run my gear all day and still fire up the truck without hesitation.Install was clean, and the unit feels built for real-world abuse. If you’ve got a Silverado and serious power needs, this isolator is the upgrade you didn’t know you needed—but won’t want to live without.” Austine Jones, Arizona Frequently Asked Questions 1. What is P.E.P.® (Proprietary Efficiency Programming)? P.E.P.® is TrueAm’s smart logic that optimizes battery protection and charging efficiency.It ensures the isolator only connects when safe and beneficial for both batteries 2. Does it regulate charging amps? No, the SBI doesn’t regulate amperage. That’s handled by your alternator and voltage regulator.The SBI simply controls when the second battery is connected based on voltage thresholds. 3. How do I install it? DIY-friendly with waterproof cables, 3M Dual Lock™ fasteners, and clear wiring diagrams.Can be mounted on any clean flat surface—including directly on the battery case 4. Can I manually override or shut it off? The male connector underneath can be wired for remote shutoff.Inline switches are optional but not required—SBI handles disconnection automatically. 5. How do I monitor battery status? Optional Single Meter Dual Display (SMDD) shows real-time voltage for both batteries.Saves space and simplifies monitoring
