

True® Land Rover Discovery Dual Battery Kit
Engineered specifically for Land Rover vehicles, this kit ensures seamless integration with factory systems while delivering robust auxiliary power for winches, fridges, lights, and other high-demand accessories.

True® Land Rover Defender Dual Battery Kit
Features a 140 Amp Voltage Sensitive Relay (VSR) that prioritizes charging your starter battery, automatically switching to charge the auxiliary battery once optimal voltage is reached. Includes high-flex tinned copper cables, brass alloy terminals, shrink tubing, and mounting hardware — everything needed for a clean, professional install.
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Why Choose True® Isolator
- OEM-Safe Integration
Plug‑and‑play installation—no alternator or ignition wiring, preserving factory integrity and warranty compliance. - Smart Dual Voltage Sensing
Intelligent sensing system that engages or isolates batteries based on real‑time charge levels for optimal efficiency. - Automatic Power Management
Automatically manages power flow between starter and auxiliary batteries, ensuring reliable starts and uninterrupted accessory use.

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® Battery Isolator, I was always second-guessing my setup—especially during long job sites or weekend overlanding trips.
This chevy silverado dual battery kit 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.
Austine Jones
ARIZONA

Installing the Silverado Battery Isolator was one of the best upgrades I’ve made to my truck. I run a lot of accessories—lights, winch, and a fridge for camping—and this chevy silverado dual battery kit keeps my starter battery safe while powering everything else.
The automatic switching is seamless, and I never worry about being stranded with a dead battery. It’s rugged, reliable, and built for real-world use. I recommend it to any Silverado owner who values dependable power management on and off the road.
Logan Parker
COLORADO

Ready to Install
Everything you need, right in the box. With detailed instructions and all hardware included, you’ll go from unboxing to fully mounted in no time. Simple, solid, and DIY-ready.
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Frequently Asked Questions
Does installing this kit void my factory warranty?
Why does the LED stay on after the engine is turned off?
Can I mount it without drilling holes?
Yes. The 2015 or 2018 Silverado dual battery kit includes 3M Dual Lock™, allowing you to mount the unit securely without screws. It can also be left suspended if preferred.
Can I mount it without drilling holes?
The kit works with most 12V battery types (AGM, gel, standard lead-acid). It is not recommended for lithium batteries unless specified.
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 Silverado second battery kit only connects when safe and beneficial for both batteries
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.
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.
How do I monitor battery status?
- Optional Single Meter Dual Display (SMDD) shows real-time voltage for both batteries.
- Saves space and simplifies monitoring





















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