REDARC 40A Classic BCDC1240D 12V / 24V DC to DC Dual Battery Under Bonnet Vehicle Charger





The REDARC BCDC1240D In-vehicle Battery Charger is the next generation in REDARC's DC to DC charging technology, with additional features that make it the most advanced dual battery charger on the market.


  • 2 x Bussmann Stackable Midi Fuse Holder with Red Cover
    • Includes 2 x 60A Midi Fuse
  • 4 x 10-5mm Cable Lugs for 6 B&S Cable Size
    • Suitable for up to 9M of Cable Install Length
  • 2 x 50A Grey Anderson Style Plug with Cable Lugs
    • Suitable for Fridge or other In-Vehicle Power Appliances
  • 2 x 50A Red Anderson Style Plug with Cable Lugs
    • Suitable for Solar Power Input
  • 1 x Universal Stainless Steel Mounting Bracket

As a guide, the BCDC1240D is used for battery bank sizes over 200AH. 

For smaller batteries of 75-200AH REDARC recommends the BCDC1225D

The REDARC BCDC1240D is a high-performance 12V 40A DC to DC battery charger designed for installation in the engine bay. Its potted design ensures resilience against heat, water, and dust, making it ideal for tough conditions.

This charger features a Maximum Power Point Tracking (MPPT) solar regulator, allowing it to charge from both solar panels and the alternator simultaneously. The integrated 'Green Power Priority' ensures that solar charging is prioritised, reducing the strain on the alternator.

Versatile Compatibility

The BCDC1240D is suitable for both 12V and 24V vehicle systems and works with standard as well as variable/smart alternators. It includes REDARC's patented charging profiles, along with a new lithium charging profile, making it perfect for REDARC Lithium batteries. Additionally, it can charge AGM, GEL, standard lead-acid, and calcium batteries.

Ideal Applications

For optimal use, the BCDC1240D is recommended for lead-acid battery banks exceeding 200Ah and lithium batteries over 100Ah. Always consult your battery manufacturer's specifications to ensure the charger's 'Continuous Current Rating' does not surpass the recommended maximum charging current. For smaller battery banks, consider the BCDC1225D.

Reliable and Tested

Utilising award-winning technology, the BCDC1240D has been independently verified and tested to ensure it maximises battery life, achieving a full 100% charge. Manufactured and tested in Australia, this charger is built to handle extreme conditions, from the scorching heat of the Simpson Desert (up to 80°C) to the deep water crossings of Cape York. It is impervious to water, dust, and vibration.

For those venturing into remote areas and seeking a reliable power solution, you can trust REDARC.

Key Features

  • Separate inputs for DC and solar charging
  • Enhances performance and longevity of your auxiliary battery
  • Allows for simultaneous DC and solar charging with Green Power Priority
  • Compatible with 12V/24V standard and variable voltage/smart alternators
  • Suitable for AGM, GEL, standard lead-acid, calcium, and Lithium (LiFePO4) batteries

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