Description
Summary
1. When the engine is running and the charging source raises the voltage of the start battery to 13.5 volts* (cut in threshold), the True Lithium Battery Isolator (SBI) engages and connects the two batteries to charge simultaneously. The SBI’s internal LED will glow blue.
2. When all voltage sources drop below 13.2 volts* (cut out threshold) the Smart Battery Isolator for Lithium battery will disengage and the blue LED will go out.
3. When the SBI LED is out the batteries are separated thus preventing the power of your start battery from being drained by use of the accessories powered from the second battery.
4. When the vehicle is restarted and the start battery has recharged to 13.5 volts* the Battery Isolator for Lithium Battery engages, the LED will illuminate and the second battery is connected to receive charging.
*The True Lithium Smart Battery Isolator is programmed with a 10 second delay before engaging or disengaging.
LED Indications
On: Isolator engaged
Off: Isolator disengaged
Dimensions
2.7(L) x 2.7(W) x 1.95(H) inches
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, automatic 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. 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, an isolator that plays nice with my Jeep’s smart 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.