Description
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A TRUE® exclusive!
When the device is turned on, the transparent cover makes the brilliant LED light below much more visible. It is a cutting-edge technology that allows for use of a secondary battery bank so no worries of the possible depletion of the main battery.
The new True® Toyota auxiliary battery kit may be dangled in-line or firmly fixed with the included 3M Dual Lock™ and mounting hardware. It is functional with dry cell, flooded lead-acid, AGM, and hybrid.
The True® Toyota Tundra dual battery kit is particularly built and configured for automotive and marine applications, and it is 100% American-made.
Why Toyota Tundra need True Heavy-Duty Battery Isolator?
A True® Heavy-Duty Battery Isolator is a smart upgrade for any Toyota Tundra running a dual battery setup — especially if you’re powering accessories for off-roading, camping, or worksite use. Here’s why:
1. Protects Your Starting Battery
True’s isolator ensures your primary battery is never drained by aftermarket gear like fridges, winches, or lighting. It automatically separates the auxiliary battery when the engine is off, so your Tundra always starts reliably.
2. Smart, Automatic Power Management
The True isolator uses a 140A automated battery management system that doesn’t require alternator or ignition connections. It charges both batteries while driving and isolates them when parked — perfect for overlanding or remote work.
3. Built for Harsh Conditions
Designed to withstand up to 130°C, True’s isolator is water- and heat-resistant, making it ideal for Tundras operating in Queensland’s hot climate or rugged terrain.
4. Compact, Easy to Install
True’s kit is small, OEM-friendly, and includes a transparent cover with LED indicators. It’s engineered for quick installation and long-term durability without complex wiring.
Whether you’re running a sound system upgrade, or heavy-duty lighting, the True Heavy-Duty Battery Isolator keeps your Tundra’s power system efficient, safe, and ready for anything.
A TRUE® exclusive!
Testimonials from Our Amazon Store
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
