REDARC 9-33Volts CLASSIC 40Amp In Vehicle Battery Charger | BCDC1240D | Includes Wiring loom valued at $89.00

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Sale price$589 Regular price$797


REDARC BC-DC1240 + Wiring Loom

This DC charger package includes a DC wiring Loom valued at $ 89.00
See more information at end of listing or click HERE
The REDARC BCDC1240D is a 12V 40A In-vehicle DC to DC battery charger. It features the next generation in REDARC In-vehicle charging technology, charging from Solar and DC inputs simultaneously.


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.

Featuring a Maximum Power Point Tracking (MPPT) solar regulator, the BCDC1240D will charge from both solar and the alternator simultaneously. With built-in 'Green Power Priority' it will select solar charging first, meaning less load on the alternator.

Suitable for 12 or 24-volt vehicle systems, the unit will also work with either standard or variable/smart alternators.

The BCDC1240D also comes with patented charging profiles, including a lithium charging profile. The 'Dual' input range will continue to charge all other types of batteries including AGM, GEL, standard lead acid and calcium. 

As a guide, the BCDC1240D is used for battery bank sizes over 200AH. For smaller batteries of 75-200AH REDARC recommends the BCDC1225D


Proven and Tested

The award-winning technology in the BCDC has been independently verified and tested to ensure battery life is maximised, charging your battery to a proven 100%.

Built in Australia and tested for our unique conditions, the DC to DC battery charger will work in the extreme heat of the Simpson Desert, up to 80°C and can handle deep water crossings at Cape York – water, dust and vibration are no match for this charger.

If you’re heading out into the bush and want to get there and back again safely – you can trust REDARC.  



  • 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 Lithium (LiFePO4) batteries
Mounting Brackets
In addition to the use of quality fuse kits, REDARC offer a range of vehicle-specific mounting brackets for our BCDC DC-DC Charger range. The 304 stainless steel bracket allows installation into the front of the vehicle for cooler airflow, ensuring optimal performance. They have been designed to fit existing mounting points in the vehicle.

Not sure what dual battery system is best for your vehicle? Let Shaun Whale explain more.

 Click here to view the product flyer

Input (Operating) Voltage 9 - 32VDC
Output System Voltage 12VDC
Maximum Charging Voltage 15.3V
Output Current Rating (Cont.) 40A
Type Approval E-Mark
Input Fuse Rating 60A
Output Fuse Rating 60A
Warranty 2 Years
Standby Current Draw <100mA
Output Power 600W
Width (mm) 120
Height (mm) 37
Length (mm) 165
Weight (kg) 1

Bonus wiring loom - valued at $ 89.00

This wiring loom has been designed for the use with any DC Battery Charger that uses a common earth (one earth cable running from the DC Charger).

The wiring loom has been especially designed around the use with Redarc DC Battery Chargers.

Simple to fit, the loom is wired in 8mm / 8B&S cable, which matches the gauge cable used on both the 25 Amp and 40 Amp DC Charger.

The loom includes: 

- An 8mm / 8B&S Fused connection from the DC charger to alternator input power

- An 8mm / 8B&S fused connection from the DC charger to the AUX Battery feed

- A common earth connection for all negative connections (via a 8mm post)

This DC wiring loom will allow you to add your selection of cable to continue the run from the Midi Fuse bolt to feed both the alternator input and the AUX battery connection.

The recommendation:

When using a 25 Amp DC charger, it is recommended to fit 8mm/8B&S cable in order to minimize voltage drop. This cable can be purchased in any length in either a Twin core 8mm or Single core 8mm. It is important to note that when using DC cable, just as much power is transferred through the negative cable as what it is through the positive cable. It is in the opinion of Home of 12 Volt to always run a twin core cable when possible for power feeds.

When using a 40 Amp DC charger, it is recommended to fit 13.5mm/6B&S cable in order to minimize voltage drop. This cable can be purchased in any length in either a Twin Core 13.5mm or Single core 13.5mm


The DC wiring loom is available to purchase with either (Select your option)

- 2 x 40 Amp Midi Fuse fitted (DC-WL40) *Recommended for 25A Chargers

- 2 x 60 Amp Midi Fuse fitted (DC-WL60) *Recommended for 40A Chargers

The DC wiring loom components are listed below

- 2 x Positive cables with pre-crimped 6mm lugs for Midi Fuse & pre-crimped 8mm joiners for DC connection
- 2 x Midi Fuse Holders
- 2 x Midi Fuses
- 3 x Additional 8mm joiners
- 4 x Red Heatshrink sleeves

- 1 x Earth Block
- 2 x CL10-6 Copper Lugs
- 2 x CL10-8 Copper Lugs
- 4 x Black Heatshrink sleeve

DC-WL Instructions

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