VEVOR - Dual Battery Isolator, 12V 300 Amp, Manual and Automatic VSR Voltage Sensitive Relay with LCD Screen
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About this product
The dual battery isolator provides adjustable start/stop voltage, compatible with both lithium and lead-acid batteries. It features manual and automatic modes – when the main battery power is low, the auxiliary battery can charge it in reverse. Its new delay function effectively avoids frequent opening and closing of the isolator due to unstable current. It easily handles complex power consumption scenarios.
High Battery Compatibility
With 300A high current, our dual battery isolator is the optimal charging solution for high-capacity dual-battery systems. It can adjust start-stop voltage, compatible with lithium, lead-acid and other battery types
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 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
- BrandVEVORModel NumberVSR005Product NameDual Battery Isolator, 12V 300 Amp, Manual and Automatic VSR Voltage Sensitive Relay with LCD ScreenAmperage300Voltage12Charger TypeDC
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The dual battery isolator provides adjustable start/stop voltage, compatible with both lithium and lead-acid batteries. It features manual and automatic modes – when the main battery power is low, the auxiliary battery can charge it in reverse. Its new delay function effectively avoids frequent opening and closing of the isolator due to unstable current. It easily handles complex power consumption scenarios.

The dual battery isolator kit provides adjustable start/stop voltage, compatible with both lithium and lead-acid batteries. It features manual and automatic modes – when the main battery power is low, the auxiliary battery can charge it in reverse. Its new delay function effectively avoids frequent opening and closing of the isolator due to unstable current. It easily handles complex power consumption scenarios.

The dual battery isolator kit provides adjustable start/stop voltage, compatible with both lithium and lead-acid batteries. It features manual and automatic modes – when the main battery power is low, the auxiliary battery can charge it in reverse. Its new delay function effectively avoids frequent opening and closing of the isolator due to unstable current. It easily handles complex power consumption scenarios.

The GENIUS2D is the ultimate direct-mount onboard battery charger, designed for under-the-hood charging. It acts as a battery charger, maintainer, trickle charger, and desulfator, making it the perfect solution for 12-volt lead-acid batteries (up to 40 amp-hours), including AGM, gel, SLA, VRLA, flooded, maintenance-free, deep-cycle, marine, and RV applications. It is compatible with a vast array of vehicles, such as cars, automobiles, lawn mowers, ATVs, UTVs, tractors, trucks, SUVs, RVs, campers, trailers, boats, pickups, classic cars, and more, including automotive brands like BMW, Mercedes-Benz, Porsche, Bentley, Maserati, Lexus, Audi, Ford, Chevrolet, Corvette, Cadillac, Prius, Toyota, Subaru, Nissan as well as lawn and garden vehicles such as John Deere, Kubota, Toro and more. With its rugged snap-fit mounting bracket and truss-head self-tapping screws, installation is secure and effortless on most surfaces. The GENIUS2D can charge batteries as low as 1 volt and even offers Force Mode to manually charge completely dead batteries (as low as zero volts). Its advanced monitoring system keeps your battery fully charged without the risk of overcharging, while precision pulse charging reverses sulfation and acid stratification, restoring battery health and extending performance. The package includes a 2A onboard charger (120-240VAC), 24-inch AC and DC cables with eyelet terminals, a mounting bracket, screws, and is backed by a three-year warranty. Proudly designed in the USA, the GENIUS2D makes battery maintenance simple, reliable, and hassle-free.
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