Engineered to Power Every Journey
True® Smart dual battery isolator sensing features
To make things even better this unit is “Dual Sensing” which senses the charge of both batteries. If either battery is receiving a charge, e.g. a battery charger is connected to the auxiliary battery; the SBI True® battery isolator system kit will engage and charge both batteries.
The advanced technology always ensures that the first battery is fully charged (13.4v) before the connection is made to the second battery. This prevents problems that may result from your charging source being too low in amps to charge all batteries at once. If placed in linear sequence between each battery the True® 12v smart dual battery isolator can provide proper charging for several batteries in multiple battery setups such as in larger boats that may have 2 or more house batteries.
You can easily see by the picture of 12v True® smart dual battery isolator below the unit is designed to withstand moisture with the silicone-covered circuit board. Although I would not plan on mounting in a position where it would be submerged it is certainly designed to take all the splashing, dripping, spilling, and other various wet conditions that would come along.
Notice also the clearly labeled connection posts and the black common ground lead. To be even more convenient all four sides are designed with “knockouts” so that you can easily route your connecting wires in any direction.
Electronic Specifications
| True part number | Rating Voltage | Continuous Current | Intermittent Current | Cut in voltage | Cut out voltage | Ignition Protection |
| IP-DS14012.913.4 | 12V | 140 Amp | 170 Amp | 13.4 V* | 12.9 V* | UL1107/UL1500 |
LED Indications
On: Isolator engaged
Off: Isolator disengaged
Dimensions
2.7(L) x 2.7(W) x 1.95(H) inches
Why Choose True Smart Isolator
Vehicle-Specific Engineering
Designed exclusively for the Toyota® Prado 150, this kit ensures a precise fit with factory mounting points—no guesswork, no unnecessary modifications. Everything works seamlessly with your Prado’s electrical system.
Vehicle-Specific 'Plug-and-Play' Design
Pre-terminated cables, quality brackets, and vehicle-specific hardware make installation clean, fast, and professional—ideal for DIY installers and workshops alike.
Smart Battery Protection
The intelligent isolator automatically prioritizes your starting battery, so you’ll never be left stranded. Your auxiliary battery powers accessories while your engine battery stays protected.
Built for the Outback (Durability)
Whether you’re running a fridge, lights, winch, air compressor, or camping setup, this dual battery kit delivers stable, reliable power for long trips and remote destinations.
Intelligent Charging Technology
The system charges both batteries efficiently while driving and isolates them when the engine is off—ensuring optimal charging performance without overloading your vehicle.
Heavy-Duty & Heat-Resistant Components
Built with automotive-grade materials, the kit is designed to withstand engine bay heat, vibrations, dust, and harsh off-road conditions.
Trusted by Leading Brands
A TRUE® exclusive!
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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 battery 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. Why should I use this Prado 150 dual battery kit?
- Prevents your main battery from being drained by accessories.
- Provides dependable power for winches, lights, inverters, and other gear.
- Ensures your truck always has starting power available.
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
6. What other vehicles can use this True dual battery kit?
7. Is it compatible with all batteries?
8. Does the True heavy-duty battery isolator fit well in a Toyota Prado?
Yes — the True® heavy-duty battery isolator is specifically designed to fit Toyota Prado models, particularly the Prado 150 series.
It comes as part of a plug‑and‑play dual battery kit that integrates seamlessly with the vehicle’s electrical system, ensuring reliable performance for off‑road and camping setups
True® smart battery isolator installed to Ford E350 Van
RV installation of True® smart battery isolator
True® smart battery isolator flawlessly installed to RV
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