VEVOR Dual Battery Charging Relay Kit, 12V, 4 m, automatic battery isolator kit with a 140A voltage sensor relay (VSR), suitable for RVs, boats, cars, trucks, campers, yachts, ATVs, UTVs, and workshops.

About this product

Two-battery isolator: The smart battery isolator turns on at 13.3V and turns off at 12.8V, ensuring that your primary battery is always charged and ready to start the vehicle. It can charge two batteries simultaneously and isolate them from each other when the vehicle is turned off.

Easy installation: This battery switch relay kit comes with all the necessary components, allowing you to begin installation immediately without having to purchase any additional parts. Detailed instructions are also available to help you complete the installation easily and flawlessly.

Durable and safe: The battery switch relay is made of high-quality plastic that is impact-resistant and dustproof, ensuring maximum durability and a long service life. This will allow you to always be prepared and confident in the face of any challenge.

Outstanding IP65 water resistance: The voltage sensor relay is waterproof to an IP65 rating, which means your isolator is safe to use even in dusty, humid, or extreme weather conditions. It is also ideal for use in vibrating environments.

Suitable for various types of vehicles: This 12V isolator kit is compact in size—67.5 mm x 53.6 mm x 67.5 mm—making it suitable for almost any location. It is primarily used in off-road vehicles, campers, RVs, trailers, 4x4 vehicles, recreational vehicles, boats, yachts, marine vessels, etc.

• 

  

  

  12V 140A Battery Switching Relay Kit
  Complete accessory kit • Weather-resistant • Smart charging

  The VEVOR dual-battery isolator kit allows your accessories to run off a separate battery while your vehicle’s engine is off. At the same time, it keeps your main battery charged, ensuring your vehicle is always ready to go. The kit includes all the necessary accessories for a complete installation. The VEVOR battery switch relay kit is perfectly suited for most cars, RVs, trucks, trailers, boats, yachts, and more. With VEVOR, you’ll be able to charge your battery optimally and tackle even the toughest challenges.

  Key Features

  Dual-Battery Isolator: Maintains the charge of the primary battery and ensures it is always ready for use, while simultaneously charging the second battery.

  Easy installation: The kit includes all necessary accessories, allowing for quick installation without the need to purchase additional parts.

  Durable and reliable: The kit is made of high-quality materials that are impact-resistant and dustproof, ensuring a long service life.

  Excellent IP65 water resistance: Suitable for use even in wet and dusty environments, as well as in extreme weather and vibration conditions.

  Compatible with a variety of vehicles: Its compact size makes it ideal for a wide range of vehicles—from SUVs to marine vessels.

  ---

  Why Choose VEVOR?

  • Top quality: Durable and reliable products.
  • Incredibly low prices: The best value for your money.
  • Fast and secure delivery: Delivered right to your door.
  • 30-day free returns: Risk-free shopping.
  • We’re always here to help.

  VEVOR is a leading brand specializing in the manufacture of equipment and tools. With over 10 million customers worldwide and representatives in more than 200 countries, VEVOR continues to offer reliable solutions at affordable prices.

  
  

  

  All accessories included
  The battery switch relay kit comes with all the necessary components for a complete installation, including screws, cable ties, and other accessories.

  

  Simple connection
  No connection to the alternator or ignition is required. The easy three-wire connection system to the battery allows you to use the vehicle’s existing electrical system.

  

  
  IP65 Water Resistance Rating The IP65 protection rating ensures that the battery switch relay operates optimally and is protected from dust, rain, vibrations, and other external factors.

  

  High-quality internal layer
  The silicone-sealed internal layer ensures greater safety and vibration resistance. The plastic housing features high impact resistance.

  

  Reinforced battery cable
  The battery cable is made of a pure, flame-retardant copper core, ensuring long-lasting and safe use. Length: 4 meters.

  

  Wide Compatibility
  The 12 V battery transfer relay kit is ideal for installation in ATVs, UTVs, trucks, RVs, and camping equipment.

  

  
  

  • 
    

  

  Contents

  • 1 x Battery Switching Relay
  • 1 x 4 m Red Battery Cable (110A)
  • 1 x 1 m Black Ground Cable (110A)
  • 1 x Negative Marine Battery Terminal
  • 1 x Positive Marine Battery Terminal
  • 2 x Fuse Holders
  • 3 x Clamp Connectors
  • 3 x Insulated Blue Ring Terminals
  • 15 x Cable Ties
  • 2 x 250 mm Red Cable (110A)
  • 2 x Heat-Shrink Tubing
  • 1 x Drill Bit
  • 1 x Black Splitter Wire
  • 1 x Set of Screws

  ---

  Specifications

  • Model: JDQTJ-4M
  • Rated Voltage: 12V DC
  • Continuous Current: 140A
  • Pulse current: 160A
  • Turn-on voltage: 13.3V
  • Cut-off voltage: 12.8V
  • IP rating: IP65
  • Material: Nylon plastic
  • Current consumption in charging mode: 280 mA
  • Current consumption in standby mode: 8 mA
  • Power contacts: M6 stainless steel
  • Delay time: 5 seconds
  • Disconnect delay: Approximately 5–10 seconds
  • Operating temperature range: -30 to 105℃
  • Dimensions (W x D x H): 6.76 x 5.36 x 6.76 cm
  • Net weight: 1.88 kg