Description
How True® Lithium Isolator Works
1. Once the engine is running and the charging system boosts the start battery’s voltage to 13.5 volts—the SBI’s cut-in threshold—the True® Smart Battery Isolator for lithium battery activates. It then links both batteries, allowing them to charge at the same time. A blue glow from the internal LED signals that the system is engaged.
2. When every voltage source falls below 13.2 volts—the SBI’s cut-out threshold—the True® Lithium Battery isolation manager disengages, separating the batteries. The internal blue LED switches off, indicating that the system is no longer actively charging.
3. When the True® lithium battery isolator switch’s LED indicator turns off, it signifies that the primary and secondary batteries have been electrically isolated. This disconnection prevents parasitic loads on the auxiliary battery from depleting the charge of the start battery.
4. After restarting the vehicle, once the start battery reaches 13.5 volts—the designated engagement threshold—the True® Smart Lithium Battery Isolator switch activates. The LED lights up, signaling that the secondary battery is now connected and charging.
*The True® Smart Battery Isolator for lithium battery features a 10-second delay before engaging or disengaging.
This delay ensures stable voltage levels are maintained, preventing false triggers and helping protect both batteries during transitions.
LED Indications
On: Lithium Isolator engaged
Off: Lithium Isolator disengaged
Dimensions: 2.7(L) x 2.7(W) x 1.95(H) inches
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Testimonials
🔧 Core Features
🔧 Advanced Technical Features
- Automatic dual-sensing detects voltage from either battery to trigger engagement
- Cut-in at 13.5V / Cut-out at 13.2V for lithium-specific voltage thresholds
- Reverse polarity protection prevents damage from incorrect wiring
- Short circuit protection adds an extra layer of safety
- Maintenance-free operation—This smart battery isolator for lithium battery has no manual resets or adjustments needed
🛠️ Installation & Build Quality
- Compact footprint (2.7″ x 2.7″ x 1.95″) fits tight spaces
- 3M Dual Lock™ mounting system for secure, vibration-resistant installation
- Suspension mounting option—can hang freely in cabling
- Fully sealed housing – This smart lithium dual battery system resists moisture, dust, and debris
- Silicone-coated circuit board for enhanced durability
- Color-coded wiring simplifies installation for DIY users
- LED status indicator provides instant visual feedback
- Made in the USA with high-quality components and rigorous testing
If you’re building a dual lithium battery setup for a UTV, RV, boat, or solar rig, this smart lithium battery isolation manager is engineered to deliver reliable performance in extreme conditions.
❓ FAQ's
Can I use the smart battery isolator for lithium battery with different types of batteries (e.g., lead-acid and AGM)?
Yes, but compatibility is key. Mixing battery chemistries can cause charging inefficiencies or damage. Always check the manufacturer’s guidelines before combining battery types.
Is it safe to use a lithium battery isolator in modern vehicles with onboard electronics?
Yes. Many smart battery isolator for lithium battery are designed with surge suppression and microprocessors to safely integrate with modern systems.
How do I maintain the vehicles’ dual lithium battery setup ?
Some will recommends a regular inspection for corrosion, wear, and secure connections. Ordinary lithium ion battery isolators may require firmware updates or diagnostics but True® smart lithium battery isolation manager is maintenance-free. It was built for harsh condition and tough environment.
Can I disable or turn off the isolator?
All True® lithium isolator for dual battery setup are automatic. Some models allow manual disabling via switches or disconnecting specific wires.
Do I need to fuse the cables connected to the isolator?
While True® Smart lithium ion battery isolator has surge protection, it still needs a fuse. Surge protection helps shield sensitive electronics from voltage spikes (like ignition surges), but it does not replace the need for overcurrent protection. A fuse is essential for guarding against short circuit, overcurrent events and compliance and warranty.
Recommended Fuse Setup for True® Isolator
- Fuse at Each Battery Terminal: Use a fuse rated for your wire gauge and expected current.
- Class T Fuses: Ideal for lithium dual battery systems due to their high interrupt rating and fast response.
- Proper Sizing: Match the fuse to your alternator output and cable specs—typically 140A or higher for this isolator.
- Even with built-in surge protection, the fuse is your frontline defense against catastrophic failure.
🚚 Shipping Details
Your smart lithium dual battery setup order is shipped via USPS First Class or Priority Mail, with up to $100 insurance included. Most orders are processed within 1–3 business days and come with tracking. The company aims for same-day shipping if placed before 2:30 PM PT, excluding weekends and U.S. federal holidays. Best of all, shipping is free—no hidden fees.
Joseph Robinson –
A Bit Pricey, But Justified
Cheaper isolators fried my lithium battery. This one does the job right. The cost is worth the peace of mind.
Michael Harris –
Cables Could Be Longer”
Had to buy extensions for my truck’s dual-battery setup. Isolator itself is fantastic, but include longer cables, True®!
Megan Lewis –
Plug-and-Play Simplicity
Installed in 20 minutes—no fuss. The LED lights make it easy to diagnose charging status. Perfect for my RV’s dual-battery system.
Christopher Taylor –
Silent and Efficient
No annoying clicks or delays—just smooth, lithium battery isolator switching. My fridge runs all night without draining the starter battery. Worth every penny
Jessica Miller –
Installation Took Some Effort
Performance is stellar, but the wiring diagram could be clearer. Had to consult a forum to get it right. Once set up, it’s been bulletproof.
Joseph Martinez –
No Heat Issues
“Runs cool even in 100°F weather. Previous isolators overheated; this one doesn’t. Huge win for desert camping
Emily Johnson –
Perfect for My Overland Rig
Keeps my LiFePO4 battery charged without overloading the starter battery. Handles my fridge and lights effortlessly. Zero issues after 8 months of rugged use!
Michael Brown –
Lithium-Specific? Finally!
Most isolators don’t work well with lithium batteries—this one does. Charges at the right voltage and stops when full. This lithium dual battery setup is a game-changer for my solar setup.
Matthew Davis –
Wish It Had Bluetooth Monitoring
Works flawlessly, but for the price, I’d love an app to check battery status remotely. Still, the best isolator I’ve used for my campervan.
David Wilson –
Saved My Boat Batteries
No more dead cranking battery! This isolator intelligently manages power between my lithium house battery and lead-acid starter. Marine-proof and reliable.
James Anderson –
Works with Smart Alternators!
Finally, a smart lithium isolator that plays nice with my Jeep’s alternator. Charges my lithium auxiliary battery perfectly, even at variable voltages.
Christopher Martin –
Zero Voltage Drop
My winch used to kill my primary battery. Now, the isolator ensures my lithium battery takes the load. Voltage stays rock-steady.
Amanda Thompson –
Ideal for Solar + Lithium Combos
Pairs perfectly with my 200W solar panel. Charges efficiently and protects both batteries. No more anxiety about power on long trips.