10 Amazing Dual Battery Kit For 2024

Mobile Accessories

Introducing the ultimate guide to the top 10 amazing dual battery kits for 2023. If you’re looking to optimize your vehicle's electrical system and ensure reliable power supply, these dual battery kits are a game-changer. Whether you're an off-roader, camper, or simply seeking added peace of mind during your adventures, these kits offer exceptional performance and convenience. We've meticulously researched and curated this list, featuring the latest innovative designs and advanced technologies. With a focus on durability, functionality, and ease of installation, these top-rated dual battery kits are a must-have for any automotive enthusiast. Stay ahead of the game and take your electrical setup to the next level with one of these incredible kits.

 

The Dual Battery Isolator Kit by KeyLine Chargers is a powerful, compact, and durable solution for managing dual battery systems in vehicles. Measuring only 2.6" x 2.6" x 2", this kit is perfect for under the hood or battery relocation applications. It eliminates the need for power-robbing traditional battery isolator diodes, solenoids, or battery disconnect switches, delivering optimal performance without sacrificing power. The voltage sensitive relay ensures that the primary battery is always charged and ready to start the vehicle, while the robust construction guarantees durability even in extreme weather conditions and vibrations. With easy-to-follow instructions and a 12-month warranty, this kit offers peace of mind and reliable performance.

Key Features

  • Dual Battery Isolator 12V Kit
  • Voltage Sensitive Relay for charging two battery systems
  • Rugged durability for off-road use
  • Includes all necessary components and easy-to-follow instructions
  • Backed by a 12-month warranty
  • Specifications

  • Dimension: 2.00L x 2.60W x 2.60H
  • Size: 140 AMP Kit
  • Pros

  • Compact size for easy installation
  • Optimal performance without power loss
  • Durable construction for extreme conditions
  • Comprehensive kit with all necessary components
  • Backed by a 12-month warranty
  • Cons

  • Poorly designed cabling
  • Instructions could be clearer
  • Not suitable for certain battery types
  •  

    The Dual Battery Isolator Kit by KeyLine Chargers is a reliable and efficient solution for managing dual battery systems. It offers easy installation, optimal performance, and rugged durability, making it suitable for various applications including cars, RVs, UTVs, ATVs, and marine vehicles. While the cabling and instructions could be improved, the overall performance and functionality of this kit are commendable. With a 12-month warranty and comprehensive components, it provides peace of mind and convenience for users. Whether you’re a DIYer or a professional, this kit is worth considering for effectively isolating and charging multiple batteries in your vehicle.

     

    The True® UTV-SBI-CM UTV Dual Battery Connect & Monitor Kit is a reliable and efficient solution for monitoring and connecting dual batteries in your UTV. With the True UTV-SBI-18 Isolator, silicon insulators, and Dual Lock fastener, this kit ensures a secure and stable connection. The 36mm blue LED volt meter with dual display allows you to easily monitor the voltage, and the included 18ga duplex wire with connectors simplifies the installation process. The sealed 6ga red and black cables with 6mm lugs provide durability and reliability. With this kit, you can conveniently monitor both batteries from one location, making it a recommended option for dual battery systems. Overall, it is a great product that offers ease of use and reliable performance.

    Key Features

  • True UTV-SBI-18 Isolator with silicon insulators and Dual Lock fastener
  • 36mm blue led volt meter with dual display
  • 18ga duplex wire with connectors
  • Sealed 6ga red and black cables with 6mm lugs
  • Specifications

  • N/A
  • Pros

  • Conveniently monitor both batteries from one location
  • Easy installation process
  • Durable and reliable cables
  • Cons

  • Poor directions for wiring the box relay
  • Negative cable length may be insufficient
  •  

    The True® UTV-SBI-CM UTV Dual Battery Connect & Monitor Kit is a highly recommended solution for managing dual batteries in your UTV. With its secure connections, easy monitoring, and durable cables, this kit offers convenience and reliability. However, it is important to note that the directions for wiring the box relay could be clearer, and the length of the negative cable may not be sufficient for some installations. Overall, this product provides excellent value and performs as expected. Whether you’re adding a second battery for accessories or upgrading your system, the True® UTV-SBI-CM UTV Dual Battery Connect & Monitor Kit is a reliable choice.

     

    The True UTV-SBI-CK UTV Dual Battery Kit is an essential accessory if you run accessories on your UTV. It comes with a True UTV-SBI-18 Isolator with silicon insulators and 3M Dual Lock fastener, as well as sealed cables in red and black. The kit is easy to install and provides reliable power to your UTV's batteries. The isolator ensures that your main starting battery is always protected and won't drain when using accessories. With a 4.7/5 customer rating, this kit is highly recommended by users. However, some customers have noted that the black ground cable is too short, and the kit may require modifications to fit certain models of UTVs.

    Key Features

  • True UTV-SBI-18 Isolator with silicon insulators and 3M Dual Lock fastener
  • 12 inch sealed Red 6ga Cable with two 6mm lugs
  • 12 inch sealed Black 6ga Cable with two 6mm lugs
  • 18 inch sealed Red 6ga Cable with two 6mm lugs
  • Specifications

  • N/A
  • Pros

  • Easy to install
  • Provides reliable power to UTV batteries
  • Protects main starting battery from draining
  • Great customer ratings
  • Cons

  • Black ground cable may be too short
  • May require modifications to fit certain UTV models
  •  

    The True UTV-SBI-CK UTV Dual Battery Kit is a highly recommended accessory for UTV owners who use accessories. It offers easy installation, reliable power to UTV batteries, and protection for the main starting battery. With its high customer rating, it has proven to be effective and efficient. However, some customers have reported issues with the black ground cable being too short and the kit requiring modifications to fit certain UTV models. Overall, if you’re looking for a dual battery kit that enhances the performance and functionality of your UTV, the True UTV-SBI-CK UTV Dual Battery Kit is an excellent choice.

     

    The Dual Battery Isolator Kit 12 Volt 140 Amp Voltage Sensitive Relay Complete VSR Double Battery Automatic Charger is a versatile product that can be installed in various vehicles. It allows your accessories to run from a separate battery while keeping your main battery charged and your vehicle ready to work. Designed to withstand dusty, wet, and extreme weather conditions, this kit includes a 12 Volt 140 Amp Voltage Sensitive Relay Isolator, instructions, and all the necessary accessories. It comes with a 6-month warranty and responsive customer support. With a rating of 4.4/5, customers praise its effectiveness, ease of installation, and value for money. However, some users found the instructions confusing and experienced issues with the device's durability.

    Key Features

  • Can be installed in various vehicles
  • Allows accessories to run from a separate battery
  • Keeps main battery charged and vehicle ready to work
  • Works in dusty, wet, and extreme weather conditions
  • 6-month warranty and responsive customer support
  • Specifications

  • Color: Iso-Pro140 Pro Dual Battery Kit
  • Dimension: 12.40Lx8.66Wx3.15H
  • Pros

  • Effective in keeping backup battery charged
  • Easy installation with clear instructions
  • Good quality components
  • Reasonably priced kit
  • Comes with all necessary accessories
  • Cons

  • Confusing instructions
  • Durability issues reported
  •  

    The Dual Battery Isolator Kit 12 Volt 140 Amp Voltage Sensitive Relay Complete VSR Double Battery Automatic Charger is a solid choice for those looking to separate power sources in their vehicles. It offers solid performance, easy installation, and a reasonable price. While the instructions may require some additional clarity, the overall satisfaction of customers speaks highly of its effectiveness. However, a small number of users mentioned issues with durability, so it’s important to take proper care and maintenance of the device. Overall, it’s a reliable kit that provides peace of mind for those who rely on accessory power while keeping their main battery charged and ready to go.

     

    The MaySpare Dual Battery Isolator Kit is a convenient and efficient solution for maintaining multiple batteries in your vehicle. This kit includes all the necessary components for a complete installation, making it easy to set up and use. With a working voltage of 12V, a 140A capacity, and voltage sensitive chip, this battery isolator ensures that your primary battery is always ready for your vehicle to run. It allows you to run your accessories from a separate battery while keeping the main battery charged. The kit is compatible with various vehicles including ATVs, UTVs, boats, RVs, trucks, and caravans. With a lifetime warranty, you can trust the high quality of this product. Overall, the MaySpare Dual Battery Isolator Kit provides a reliable and efficient solution for managing multiple batteries in your vehicle.

    Key Features

  • 12V, 140A with voltage sensitive chip
  • Enables running accessories from a separate battery
  • Suitable for various vehicles (ATV, UTV, boats, etc.)
  • Includes all necessary installation components
  • Lifetime warranty for peace of mind
  • Specifications

  • Color: Black
  • Size: L
  • Pros

  • Easy installation with clear instructions
  • Reliable performance in keeping batteries charged
  • Suitable for use with a smart or variable alternator
  • Long cable allows for flexible installation
  • Cons

  • Lack of detailed instructions for some wiring
  • May not work well with certain alternator types
  •  

    The MaySpare Dual Battery Isolator Kit offers a reliable and efficient solution for managing multiple batteries in your vehicle. Its voltage sensitive chip ensures that your primary battery is always ready for your vehicle to run, while allowing your accessories to run from a separate battery. The kit includes all the necessary components for a complete installation, and its compatibility with various vehicles makes it a versatile choice. With a lifetime warranty, you can trust the quality and durability of this product. However, some users may find the lack of detailed instructions for certain wiring configurations a drawback. Overall, the MaySpare Dual Battery Isolator Kit is a valuable addition to any vehicle with multiple battery needs.

     

    The REINDEER Dual Battery Smart Isolator 12V 140Amp Double Battery Automatic Charger ATV UTV Wiring Kit is a reliable solution to manage power distribution in your vehicle. With its voltage sensitive chip, it ensures that your primary battery is always ready to run while allowing your accessories to run from a separate battery when the engine is not running. This dual battery isolator kit keeps your main battery charged and your vehicle always ready to go and start when you want it. It is compatible with a wide range of vehicles and comes with a lifetime warranty for added peace of mind. Install this kit and enjoy the convenience of multiple power sources in your vehicle.

    Key Features

  • 12V, 140A, 13.3V cut-in voltage, 12.8V cut-out voltage
  • Package Include All the Bits and Pieces Needed for a Complete Installation
  • Working Voltage: Having Voltage Sensitive Chip
  • Rely Cuts in at 13.3 Volts and Cuts out at 12.8 Volts to Ensuring Primary Battery is Always Ready for Vehicle to Run
  • Fuction: Like Having Two Separate Power Sources
  • The Dual Battery Isolator Kit Enables Your Accessories to Run From a Separate Battery While the engine is not running on your vehicle
  • While keeping your Main Battery Charged and Your Vehicle Always Ready to Go and Start When You Want It
  • Compatibility: This battery isolators are small and suitable for almost anywhere
  • For ATV, UTV, Boats, RV's,marine vehicle, truck, caravan
  • LIFETIME WARRANTY: 100% High Quality and Enjoy Full Life Warranty, Free Exchange
  • Specifications

  • N/A
  • Pros

  • Easy installation with all necessary components included
  • Ensures primary battery is always ready for vehicle to run
  • Allows accessories to run from a separate battery
  • Keeps main battery charged and vehicle ready to go
  • Small and suitable for various vehicles
  • Comes with a lifetime warranty
  • Cons

     

    The REINDEER Dual Battery Smart Isolator 12V 140Amp Double Battery Automatic Charger ATV UTV Wiring Kit is a reliable and convenient solution for managing power distribution in your vehicle. Its voltage sensitive chip ensures that your primary battery is always ready to go, and the kit allows your accessories to run from a separate battery when the engine is not running. It is small, suitable for various vehicles, and comes with all the necessary components for easy installation. The lifetime warranty adds value and assurance to the product. Upgrade your vehicle’s power management system with this dual battery isolator kit and enjoy worry-free journeys.

     

    The UTV-SBI-CM Dual Battery Connect & Monitor Kit is a high-quality battery monitoring kit designed for various vehicles such as UTVs, ATVs, RVs, cars, trucks, marine boats, and personal watercraft. It features a dual-display blue LED voltage gauge, on/off relay and socket, and 8ft duplex wire with connectors. The kit allows for easy installation and offers real-time tracking of charging status with its waterproof and shockproof digital LED voltmeter. It also provides intelligent dual battery monitoring and best charging management for your accessory battery while protecting your primary battery. With its automatic connection and isolation, it ensures a hassle-free experience without tampering with the original wiring.

    Key Features

  • High-quality battery monitoring kit
  • Waterproof real-time tracking of charging status
  • Intelligent dual battery monitoring kit
  • Best charging management
  • Easy to install
  • Specifications

  • N/A
  • Pros

  • High-quality construction and design
  • Real-time monitoring of charging status
  • Easy installation without tampering with original wiring
  • Protects primary battery while managing accessory battery
  • Suitable for various vehicles and environments
  • Cons

  • Lack of detailed specifications
  • Limited information about compatibility
  • Relatively high price point
  •  

    The UTV-SBI-CM Dual Battery Connect & Monitor Kit offers a reliable and efficient solution for managing dual batteries in vehicles. With its high-quality construction, waterproof design, and intelligent monitoring capabilities, it provides users with peace of mind while on the road or water. The kit’s easy installation and compatibility with a wide range of vehicles make it a convenient choice. However, potential buyers should consider the lack of detailed specifications and higher price compared to other similar products. Overall, this kit is a valuable investment for those seeking efficient battery management in their vehicles.

     

    The DEWINNER 12V 140Amp Dual Battery Isolator Kit is designed to provide a reliable and convenient solution for charging two battery systems. With its easy installation process and voltage sensitive relay, this kit ensures that your primary battery is always charged and ready to start your vehicle. It fits a wide variety of vehicles and is suitable for 12V 4WD, marine, truck, caravan, and camping applications. The kit includes all the necessary components for installation and comes with a 12-month warranty. Please note that there have been some reported issues with missing screws for the fuse block and an incorrect length of the red power cable in some cases.

    Key Features

  • Easy to Install: No alternator or ignition connection needed
  • Voltage Sensitive Relay: DEWINNER Automatic 140 Amp Dual Battery Isolator
  • Fits a Wide Variety of Vehicles: Like Having Two Separate Power Sources
  • What You Get: 140 Amp Voltage Display Battery Isolator
  • Buy With Confidence: Every 140 Amp Dual Battery Isolator is backed by an industry leading 12-month warranty
  • Specifications

  • N/A
  • Pros

  • Easy installation with everything included
  • Voltage sensitive relay ensures primary battery is always charged
  • Suitable for a variety of vehicles
  • Comes with a 12-month warranty
  • Cons

  • Missing screws for fuse block in some cases
  • Incorrect length of red power cable reported by a customer
  • Some customers experienced issues with battery isolator not working
  •  

    The DEWINNER 12V 140Amp Dual Battery Isolator Kit offers a convenient and reliable solution for charging two battery systems. With its easy installation process and voltage sensitive relay, you can ensure that your primary battery is always ready to start your vehicle. The kit is suitable for a wide range of vehicles and comes with a 12-month warranty for added peace of mind. However, some customers have reported issues with missing screws and incorrect cable length. Despite these drawbacks, this kit provides good value for its price and performs its job effectively.

     

    The 200 AMP Heavy Duty Dual Auxiliary Battery Isolator Copper Cables Complete Kit is the perfect solution for isolating a second battery, allowing it to be dedicated to the stereo system, starter, or additional electronics. This kit includes a 200 amp battery isolation relay that doesn't cause voltage drop to the second battery like conventional isolators. It also comes with heavy duty cables, ring terminals, fuse holders, and fuses to fully protect both batteries and the vehicle's electrical components. The relay easily connects to the vehicle's charging system, opening and closing with the key or switch. With a customer rating of 4.4 out of 5, this kit is highly recommended for experienced installers. It may present challenges for beginners without proper guidance.

    Key Features

  • 200 amp battery isolation relay
  • 10 foot superior quality 4 gauge copper cable
  • Four 4 gauge gold ring terminals
  • Two gold plated AGU fuse holders with 100 amp fuses
  • Easy to install and works as intended
  • Specifications

    Pros

  • High-quality components
  • Includes all necessary items for installation
  • Plenty of wire for hooking up
  • Relay opens and closes with key or switch
  • Cons

  • No installation video provided
  • Cables can be difficult to insert into fuses
  • Misleading description regarding amp rating
  •  

    The 200 AMP Heavy Duty Dual Auxiliary Battery Isolator Copper Cables Complete Kit is a reliable and comprehensive solution for isolating a second battery in a car or marine vehicle. With its high-quality components and included items, it offers great value for experienced users who are confident in their installation skills. However, beginners may find it challenging without proper guidance, especially due to the lack of an installation video. Additionally, some customers have noted misleading information regarding the amp rating. Overall, this kit is recommended for those who know what they’re doing and need a reliable solution for battery isolation.

     

    The 12v 140 Amp Dual Battery Isolator Kit is designed to keep your vehicle's main battery charged while allowing your accessories to run on a separate battery. With a rugged case built for extreme environments, this kit operates in temperatures ranging from -30°C to 105°C (-22 to 221°F). It is also waterproof and shockproof, making it suitable for off-road adventures. The kit includes a 12 volt 140 amp Voltage Sensitive Relay isolator, which turns on at 13.3V and turns off at 12.8V, ensuring your main battery is always ready to start your car. Installation is simple with the included parts and easy 3-wire connection. Plus, it comes with a lifetime warranty for your peace of mind.

    Key Features

  • Wide range of applications for 12V 4WD boats and more
  • Rugged case for extreme environments
  • Waterproof and shockproof for off-road use
  • Allows accessories to run on a separate battery
  • Easy installation with all parts included
  • Lifetime warranty for your satisfaction
  • Specifications

  • N/A
  • Pros

  • Wide range of compatible vehicles
  • Extreme weather resistant
  • Keeps main battery charged
  • Simple installation
  • Lifetime warranty included
  • Cons

  • Not compatible with lithium batteries
  • No detailed specifications provided
  •  

    The 12v 140 Amp Dual Battery Isolator Kit is a reliable solution for maintaining your car’s main battery charge while running accessories on a separate battery. Its rugged design and resistance to extreme weather make it suitable for off-road adventures. The easy installation process and lifetime warranty add to its appeal. However, it’s important to note that this kit is not compatible with lithium batteries. Overall, if you’re in need of a dual battery isolator for your 12V vehicle, this kit provides a durable and convenient option.

     

    Buyer's Guide: Dual Battery Kit

    A dual battery kit is an essential addition to any vehicle to enhance its electrical capabilities and ensure a reliable power source. Whether you use your vehicle for off-roading adventures, outdoor camping, or simply need extra power for various devices, a dual battery kit is a fantastic investment. Here's a comprehensive buyer's guide to help you make an informed decision:

    Factors to Consider

    When purchasing a dual battery kit, it's important to consider several factors to ensure you end up with the right product for your needs. Here are the key points to keep in mind:

    • Battery Compatibility: Check if the dual battery kit is compatible with your vehicle's batteries. Different kits may be designed for specific battery types or sizes, so double-check this before making a purchase.
    • Voltage and Capacity: Evaluate the voltage and capacity requirements of your vehicle and the devices you plan to power. Ensure that the dual battery kit can meet these requirements effectively.
    • Installation Space: Consider the available space in your vehicle where you plan to install the dual battery kit. Measure the dimensions and choose a kit that fits appropriately in the designated area.
    • Ease of Installation: Look for a dual battery kit that comes with clear installation instructions and requires minimal modifications to your vehicle's electrical system. Opt for kits that are beginner-friendly and provide necessary installation hardware.
    • Features and Functionality: Determine which features are important to you. Some kits may include LED displays, voltage regulators, or battery isolators. Make a list of features that matter and find a kit that meets your specifications.
    • Durability and Warranty: Check the durability of the dual battery kit and search for warranties that offer peace of mind. A reliable and robust kit will last longer and provide dependable performance.
    • Safety Considerations: Ensure that the dual battery kit includes safety features like surge protection, short circuit protection, and temperature control. Safety should always be a priority when dealing with electrical components.
    • Budget: Set a budget for your dual battery kit and choose one that falls within your financial limitations. While it's tempting to go for the cheapest option, prioritize quality and value for money instead.

    Benefits of a Dual Battery Kit

    Investing in a dual battery kit offers a range of advantages that enhance your vehicle's electrical capabilities and improve your overall experience. Here are some of the benefits:

    • Extended Power Supply: With a dual battery kit, you have a secondary power source, allowing you to run accessories such as camping equipment, lighting, refrigerators, or communication devices without draining your primary vehicle battery.
    • Peace of Mind: Dual battery kits provide added security by ensuring you always have a reliable power source even if one battery fails. This feature is especially crucial for off-road adventures or remote locations where assistance may be limited.
    • Efficient Power Distribution: A dual battery kit typically includes a battery isolator, which prevents power from draining from one battery to another. This optimizes power distribution and prevents any unnecessary power loss.
    • Versatility and Convenience: Whether you're on a road trip, camping, or participating in outdoor activities, a dual battery kit allows you to charge multiple devices simultaneously without worrying about draining your primary battery.
    • Easy Battery Maintenance: Dual battery kits often feature a charging system that enables you to keep both batteries in good condition. This helps prolong the life of your batteries and ensures they're always ready for use.

     

    FAQ

    Q: Are dual battery kits compatible with all types of vehicles?
    A: While most dual battery kits are compatible with a wide range of vehicles, it’s essential to check for compatibility with your specific vehicle make and model before purchasing.

    Q: Can I install a dual battery kit myself?
    A: Yes, many dual battery kits come with detailed installation instructions that make it possible for individuals with basic automotive knowledge to install them. However, if you’re unsure or lack experience, it’s always recommended to seek professional help.

    Q: How long does it take to install a dual battery kit?
    A: The installation time varies depending on your vehicle and the complexity of the kit. It can take anywhere from a couple of hours to a full day, especially if it involves additional modifications to your vehicle’s electrical system.

    Q: Are there any precautions I should take when installing a dual battery kit?
    A: Yes, it’s crucial to disconnect the vehicle’s battery before starting the installation process. Additionally, carefully follow the manufacturer’s instructions during installation to avoid any mishaps or damage.

    Q: Can I use a dual battery kit with my electrical appliances at home?
    A: No, dual battery kits are specifically designed for vehicles and not intended for use with regular household appliances. They are engineered to work within the vehicle’s electrical system and may not provide adequate power for home appliances.