Autobarn Know How


    Battery Charging Solutions For Modern Vehicles


    Do you own a late model 4WD and want to install a dual battery system?

    Vehicle technology has evolved which means a new solution is required to keep your second battery charged.

    Most 4WD’s from around 2010 onwards are fitted with ‘smart alternators’ that work a bit like a microprocessor battery charger and switch off when the primary battery is full. If the dual battery is set up using traditional methods, the alternator is not able to see it and as such will not deliver any charge to it, resulting in a flat battery, your fridge not working and potentially your camping trip ruined.
    These modern vehicles need a different solution to ensure the second battery is always receiving charge when the engine is running and that is to fit a DC-DC battery charger into the vehicle.

    A DC-DC charger is essentially the same as a modern microprocessor battery charger except that it is powered by 12V rather than 240V.

    1. Projecta DC-DC
    25A Charger

  • Charge caravan secondary batteries on the go.
  • 12/24V / 25Amp / 3 stage charge.
  • Suitable for WET, AGM, GEL & CALCIUM batteries.
  • Solar input wire.
  • Water temperature resistant, ideal for under bonnet installations.

  • 240V & Solar Battery Chargers

    Typical 7 Stage Charging Matrix
    Micro-Processor controlled chargers are the most versatile for handling the varied demands of modern vehicles and battery technology.
    They can also be left connected indefinitely to maintain charge
    in batteries that are infrequently used to extend battery life.

    2. Projecta Pro-Charge
    Microprocessor Chargers

    3. CTEK 5Amp
    Microprocessor Charger

    4. Battery Link 750mA
    Maintenance Charger

    5. Powerwize Solar
    Maintenance Chargers

    6. Battery Link
    Automotive Chargers

    NOTE: This information is provided as a guide only and professionals should be consulted when doing any work to a vehicle. Autobarn is not liable for any loss or damage which is suffered or incurred (including but not limited to indirect or consequential loss) for any personal injury or damage to property suffered or sustained as a result of using the information provided.