True Dual Battery Kit

This is the ultimate kit for efficiently adding that 2nd or 3rd battery system in your car, boat, RV or whatever you wish. It utilizes the simplest and most advanced technology to keep all your batteries charged using the engine's electrical system but isolating the starting battery so you never get stranded.

The dual battery kit uses the same isolator we have installed in our boats and campers to keep the accessory batteries charged but isolating the starter battery system so it stays charged. The great thing about these is that you don't have to reroute any alternator wires and they are all automatic. Everything you need to do the simple job yourself.

  • Suitable for all 12 volt application
  • 140 Amp Smart Battery Isolator (SBI)
  • Priority charging for starting battery
  • Alternator outputs up to 150 amps
  • Fully Automatic, Proven Integrated Technology
  • Easy to Install
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KIT INCLUDES

  • 1 140 Amp Smart Battery Isolator
  • 1 20' length of 6 AWG extra flexible red cable
  • 1 3' Black 6 AWG Ground Cable
  • 2 Positive brass marine type battery terminals
  • 1 Negative brass marine type battery terminal
  • Tinned copper lugs
  • Clear Adhesive lined Shrink Tube (A TrueAm exclusive)
  • Cable Ties
  • Easy to follow instructions
  • Dual Battery Kit 2013



The dual battery installation kit allows for safe charging and separation of starting and auxiliary batteries in all Volt Marine, 4WD, Caravan and Solar applications.
The dual battery installation kit allows for safe charging and separation of starting and auxiliary batteries in all Volt Marine, 4WD, Caravan and Solar applications.
When the engine is turned off discontinuing the provision of charging voltage and the battery voltage falls below 12.9 volts for 10 seconds the SBI disengages separating the start and auxiliary batteries, at this point the Blue LED will go off and the SBI isolates the auxiliary battery allowing it to continue to power any accessories without the risk of depleting the starting battery's reserve charge thus always insuring the power to crank your engine.
The SBI and its Dual Sensing circuitry allow a charging source to be connected to either the main or secondary battery, e.g. a battery charger, and it will engage once the threshold is reached allowing both batteries to receive a charge. This allows you to charge or maintain the charge of both batteries with a single charger connected to either battery.
The dual battery installation kit is easy to install and comes with all components and instructions required to complete the install. With the TRUE Smart Battery Isolator you can rest assured you have not voided your vehicles warranty by disturbing the ignition or alternator/generator wires.

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