Auxiliary Battery Systems

An ARB auxiliary battery system can provide piece of mind, allowing you to power additional accessories without flattening the main battery.

Whether it is powering a few home comforts like your Fridge Freezer or the whole family’s camping setup, an ARB auxiliary battery system will keep you running.

ARB has a range of auxiliary battery systems and batteries available, with one to suit all HiLux vehicle models.


  • Peace of mind in the event of a main battery failure
  • Battery trays manufactured from 3mm powder coated steel
  • A dual battery box is available for tub/load space applications and comes complete with a separate bolt on lid for additional protection
  • Laser cut, folded and welded for extra strength
  • Trays available on their own or as part of a complete kit
  • Kits are supplied with tray and mounting hardware, factory terminated wiring and either a solenoid or smart solenoid (Century Yuasa and Optima batteries also available from ARB)

Redarc Management Systems

There is a range of Redarc battery management products available to complement your dual battery system. For a recommendation on the most appropriate management system to suit your specific setup and power requirements, please contact your local ARB store or stockist.

SmartStart SBI Series

SmartStart SBI Series

This auxiliary battery isolator is designed for use in multi-battery applications as a solenoid priority system, only charging the auxiliary when the main battery is fully charged. Two models are available with both suitable if the two batteries are not the same (eg. cranking and deep cycle).

  • Fault indication
  • LED lights appear when the solenoid is activated
  • Fully surge-protected
  • Available as a kit with all wiring and connectors available


Redarc Dual Input Battery Charger

Redarc Dual Input Battery Charger

The REDARC BCDC1250D In-vehicle Battery Charger is REDARC’s bigger and most powerful dual input (50amp) in the BCDC range.

  • Separate DC and Solar Charging inputs
  • Maximises the performance and life of your auxiliary battery
  • Simultaneous DC and Solar charging with green power priority
  • Suits 12V/24V standard and variable voltage/smart alternators
  • Suitable for AGM, Gel, Standard Lead Acid, Calcium and LiFePO4 batteries


BCDC In-Vehicle Charger

BCDC In-Vehicle Charger

The BCDC is a multi-stage DC to DC charger, that ensures your auxiliary battery receives optimum voltage and maximum charge where there is either voltage drop due to long battery cables, or two different battery chemistries in use.

  • Suitable for charging from 12V or 24V vehicles
  • Charges AGM, gel, calcium, URLA and lead acid batteries
  • Available in 25 and 40 amp with inbuilt MMPT solar regulators for solar connectivity (requires RK1260 relay)