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VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
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VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV
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VEVOR Dual Battery Isolator Kit, 12V 140 Amp 20 ft 6AWG, Manual and Automatic VSR Voltage Sensitive Relay with Voltmeter, LCD Screen, Smart Battery Isolator, Compatible with Lithium Batteries, for UTV

4.4 23 Reviews
$ 68 90
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Features & Details

  • High Battery Compatibility: Our dual battery isolator kit can adjust start-stop voltage, compatible with lithium, lead-acid and other battery types. No compatibility worries, it provides optimized charging experiences to maximize battery lifespan
  • Manual & Automatic Modes: No more breakdowns! This voltage sensitive relay enables one-click switching to manual mode, letting your fully charged auxiliary battery reverse-charge a depleted main battery. No jumper cables needed—start the vehicle instantly
  • Intelligent Delay Function: With an adjustable delay time of 3-60 seconds, this VSR isolator effectively avoids frequent switching, significantly extending the service life of the isolator and battery
  • Dual Voltage Display: The high-brightness display shows the accurate voltage of the two batteries in real time (range 4.5V-20V). Our 12v split charge isolator kit can easily diagnose circuit problems and confidently master the system status
  • All-Round Protection: Featuring overvoltage and undervoltage protection, the dual battery smart isolator is sturdy, durable, shockproof, and dustproof. It provides stable and reliable power for your RV, truck, boat, or off-grid system. Package includes: 1 x 140A smart lithium battery isolator (with mounting screws), 1 x 20 ft (6 m) 6 AWG red cable, 1 x 2 ft (0.6 m) 6 AWG black ground cable, 3 x pure copper connectors, 2 x heat shrink tubing, 4 x cable lugs, 6 x zip ties

Product specification

  • Item Model Number VSR003-1
  • Rated Voltage & Current DC 12V 140A
  • Color Black
  • Main Material Plastic PA6 Isolator + Copper Wire
  • Net Weight (Including All Accessories) 3.5 lbs/1.6 kg
  • Product Dimensions (L x W x H) 3.1 x 2.8 x 2.4 in/80 x 70 x 60 mm

Reviews summary

4.4 23 Reviews
Customers say: The product is praised for efficient charging, good quality components, straightforward installation, and reliable performance, but criticized for lacking clear instructions and occasional missing parts.

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The product is praised for efficient charging, good quality components, straightforward installation, and reliable performance, but criticized for lacking clear instructions and occasional missing parts.
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About this item

Product specification
Item Model Number
VSR003-1
Rated Voltage & Current
DC 12V 140A
Color
Black
Main Material
Plastic PA6 Isolator + Copper Wire
Net Weight (Including All Accessories)
3.5 lbs/1.6 kg
Product Dimensions (L x W x H)
3.1 x 2.8 x 2.4 in/80 x 70 x 60 mm
Description
High Compatibility
The dual battery isolator kit automatically adjusts charging voltage according to different battery types. It is widely compatible with various lithium batteries and lead-acid batteries, ensuring that different types of batteries can work efficiently.
Our voltage sensitive relay not only supports flexible voltage adjustment and emergency reverse charging, but also has built-in delay protection to avoid loss from frequent start-stop. Including a real-time display of dual voltages, it keeps you informed of battery status for reliable use.
Featuring high-strength plastic housing, this smart battery isolator provides strong impact resistance to effectively withstand collisions. Treated with special technology, it can avoid the intrusion of water and dust.
Out of power in the starter battery? Don’t worry! Our VSR isolator can be switched to manual mode, utilizing your fully charged secondary battery for reverse charging. It allows you to start your engine without jumper cables and get back on the road in no time!
Specifically designed for dual battery systems, this 12v split charge isolator kit ensures simultaneous charging of two batteries without interrupting the device power supply. Whether in your off-road vehicle, RV, or boat, it provides stable and reliable power support for your devices.

High Compatibility with Lithium and Lead-Acid Batteries for Optimized Charging

The VEVOR 12V dual battery isolator kit can work with many types of batteries. The isolator automatically adjusts the start and stop voltages, so you don't have to worry about compatibility issues.


You'll see how simple it is to link different kinds of batteries. This kit gives you a consistent, optimized charging experience whether you switch to lithium batteries or keep using lead-acid batteries. It ensures that all batteries have the right amount of power so your system or car is always ready to go.


12V Dual Battery Isolator Kit with Manual & Automatic Modes for Flexible Battery Management

You can switch between manual and automatic modes whenever you need to with the VEVOR 12V dual battery isolator kit. When you set the system to automatic mode, it charges your batteries and keeps your main and backup batteries in balance without you having to do anything.


You'll find the manual mode very useful in an emergency, on the road, or when you're away from the power grid. You can decide how much power goes to each battery with just one click, so your main battery will never die on you. The different operating modes give you full control over your energy system and protect your car's electrical components.


12V Dual Battery Isolator Kit: Intelligent Delay Function with Adjustable Time of 3-60 Seconds

This 12v dual battery isolator kit features a clever delay function that lets you set the delay between 3 and 60 seconds. This keeps you from having to switch batteries frequently, which can help protect both the isolator and your batteries.


Your batteries will be safe from constant charging and discharging processes thanks to this feature. Fewer switches are needed, so the isolator helps keep power stable and extends the life of the main and backup batteries. It works great for RVs, trucks, and off-grid systems that need to control their energy consistently.


Dual Voltage Display Shows Real-Time Battery Status (Range 4.5V–20V)

The VEVOR 12V dual battery isolator kit features a bright dual-voltage LCD screen that displays the real-time voltage of both your main and backup batteries, which can range from 4.5V to 20V. With this feature, you can quickly check each battery's health to ensure it is operating safely.


The LCD screen also makes troubleshooting a lot easier, as you will see. You can make smart choices about charging and maintenance by looking at the exact voltage numbers. Instead of overcharging or undercharging, our system keeps the batteries at the right level so they last longer and work better.


12V 140 Amp 20 ft 6AWG Smart Battery Isolator for Reliable Power

With a 12V rating and 140 amps, the VEVOR dual battery system ensures stable voltage and current. The 20-foot 6AWG cable gives you many installation options so you can connect batteries even in larger vehicles or more complex setups.


You will notice how stable the power is that keeps your car or RV running. This 140A isolator ensures a steady flow of electricity, even when you use multiple devices, start engines, or power extra systems. The 20-foot-long cable is easy to route, so you can place it safely and neatly without stretching or bending the wires too much.


Overvoltage and Undervoltage Protection for Safe Operation

The VEVOR 12V dual-battery isolator kit features improved overvoltage and undervoltage protection, keeping your main and auxiliary batteries safe from voltage spikes and drops. This smart safety feature prevents sudden voltage spikes or drops from harming your batteries or connected gadgets.


You will also like how this safety makes your energy setup more reliable overall. The isolator quickly reacts when it senses excessive voltage, protecting your electronics and batteries. This smart monitoring gives you peace of mind, knowing your car or off-grid system will always have power.


Durable, Shockproof, and Dustproof Design for Long-Lasting Use

Built to last, the VEVOR 12V dual-battery disconnect kit is dustproof and shockproof. You can leave it outside in rough conditions, with strong shocks and dust, and it will still work fine.


When you put this isolator in place, you will also notice how strong and reliable it feels. You can keep it running smoothly even in rough terrain or dusty work sites, and it will protect both your main and backup batteries. The sturdy construction guarantees steady performance over time so that you can keep your attention on your trip, job, or adventure without distractions.


Complete Installation Kit with Cables, Connectors, and Accessories

The kit includes one 140A smart battery isolator, one 20-foot 6AWG red cable, one 2-foot 6AWG black ground cable, three pure-copper connectors, two heat-shrink tubings, four cable lugs, six zip ties, and mounting screws. Simple to set up.


Whether the kit is your first time working with a battery isolator or not, the installation will be easy. The included components and accessories save you time and money because you don't have to buy them separately. By following the easy setup steps, you can have a fully functional dual-battery system that powers your cars or off-grid systems effectively.


Product guides and documents
User manual-en (PDF) Review

Questions and Answers (5)

It won't allow to draw too much amperage from my LIFEPO4 batteries like 800 CCA during semi truck start if vehicle starter batteries would be dead?
An isolator is an automatic switching device that closes and opens a circuit. It does not currently have the ability to control current levels. If this answer does not resolve your issue, please contact us again for assistance.
By vevor
Helpful ( 0 )
Solar input to truck Rv. 200 watt input to Lifepo camper battery! I want to make that main & when fully charged have switch solar output to Start battery (Lead A) . As this is a RV camper that sets for months in winter , start battery drops. CAN I INPUT FROM SOLAR CHARGE AND IT SWITCH SWITCH TO START BATTERY ? How does it disconnect from LI Battery when charging start battery?
We recommend that you designate the starter battery as Battery 1 and connect the solar charger to it. This ensures that the starter battery is fully charged first, and any excess power is then supplied to the other batteries. If this answer does not resolve your issue, please contact us again for assistance.
By vevor
Helpful ( 0 )
Can this be used between different battery chemistries - like lead acid starting battery and a LiFoPo4 house battery?
Yes, you can adjust the voltage yourself.
By vevor
Helpful ( 0 )
Can this be used on side by side to connect factory AGM battery and add lifepo4 battery for 12V accessories?
You can use this battery in side-by-side vehicles, connecting the original AGM battery and adding a lithium iron phosphate battery to power 12V accessories.
By vevor
Helpful ( 0 )
How long are the cables and what gauge are they?
Dear Customer, Thanks for your inquiry. 0.6-meter black line, 6-meter red line Black line 16 square millimeters, red line 12 square millimeters
By vevor
Helpful ( 0 )
Select product protection plan
Accident and warranty protection by Xcotton (partner with AIG)
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