4×4 Dual Battery Isolator Kit True® Brand


A 12V dual battery isolator system for 4×4 vehicles ensures you’re equipped with the battery power to enjoy your off-road adventure without worrying about having the necessary power available to run all those accessories.

SKU: DBK12LARGE2 Category:


Dual battery system inclusion:

    • 1 (SBI) True 4×4 Smart Battery Isolator complete with mounting screws
    • 20 feet #6 high flex red cable with tinned copper cable lugs
    • 3 feet #6 high flex black cable with tinned copper cable lugs
    • 2 positive brass alloy battery terminal ends
    • 1 negative brass alloy battery terminal end
    • 3 loose crimp on tinned copper cable lugs
    • 2 sections of adhesive lined shrink tube
    • 5 zip ties
    • 1 manual for installation
    • Via:USPS first class or priority mail
    • Delivery: USPS first class or priority mail

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Easy to Install

Avoid the situation of being stranded by being prepared. A properly designed 4×4 dual battery setup will allow you the extra power, via a second battery, you need to run that winch and those high-intensity lights without the risk of depleting your start battery and having a long walk out. By making use of one of our options provided by True with the  Smart Battery Isolator and whatever cable configuration you may need to complete the install you can in a short period of time install the correct system to deal with your anticipated and, not so anticipated, challenges.

What makes the True smart battery isolator special is that it is indeed “Smart”. It knows exactly when to connect and disconnect to provide for the charging of the secondary battery whenever there is additional power available above and beyond that required by the primary electrical system and its operation.

Auto Detection

The ability for the True Isolator to function in a dual battery management system for vehicles is nothing short of the unit reading the mind of the available charging source and making use of the available power to charge your second battery for all those accessories but to disconnect and isolate the batteries from one another when to much energy is being used. This ensures that your starting battery will always have the energy to do its primary job of cranking the engine.

Our Expert is You

The people at True have spent over 5 years listening to the very users of these units to truly discover what is needed in the real-world application instead of trusting some engineer to design something that fits a theoretical situation. The back roads, forests, mountains, deserts, sand dunes, jungles, rain forests, and most anywhere else you may need a 4 x 4 has been the development and testing laboratory.

With the information accumulated True tweaked, adjusted, redesigned, and most of all listened to come up with products that are “right” for the application of 4×4 dual battery setup.

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