When it comes to managing in-vehicle dual battery systems, you can’t go past a REDARC DC to DC charger and their range of REDARC battery isolators.

Here at AutoElecOz we stock the full range of DC DC chargers with every combination of input voltage, output voltage and current specifications to suit your vehicle’s needs. They are suitable for 4x4s, caravans, trailers, boats and heavy industrial vehicles.

Complete manuals and wiring diagrams are also provided for an easy install experience.

A REDARC BCDC battery charger helps to ensure your auxiliary battery stays charged no matter its type or size. They use a multi-stage charging profile to ensure your secondary battery is charged to 100%. Whereas a smart battery isolator will only top up the second battery as it is primarily focused on the state of charge of the primary battery.

With their state of the art technology, many of the REDARC BCDC chargers also support simultaneous charging from both the alternator and solar panels or solar blankets. The added solar input lessens the load on vehicle alternators and provides a “greener” power solution.

A BCDC offers greater flexibility for your dual battery system. It not only ensures correct charging, but also overcomes some of the low outputs by modern vehicle alternators that are not suitable for charging dual batteries.

They also help to overcome voltage drop, particularly over long cable distances, such as to a camper or caravan.

One of the more popular models based on customer reviews is the REDARC BCDC1225D charger, so be sure to check that one out.

REDARC battery isolators, including their Smart Start range, are designed to prevent your secondary battery from draining your main crank battery. The last thing you want is to be stuck in a remote area with a drained primary battery.

They can also be used in the event of a flat primary battery to allow the secondary battery to aid in starting the vehicle.

These battery isolators are compact and easy to install, with easy to follow manuals.

To top it all off, REDARC provide a range of full advanced battery management systems, designed to give you full control of your batteries and their status.

If you’re looking to charge your vehicle’s battery from mains power, be sure to also check out the REDARC AC to DC chargers.

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BCDC MOUNTING BRACKET TO SUIT ISUZU D-MAX AND HOLDEN COLORADO

$77.61

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BCDC MOUNTING BRACKET TO SUIT TOYOTA 200 SERIES

$77.61

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BCDC MOUNTING BRACKET TO SUIT TOYOTA 70 SERIES

$77.61

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BCDC MOUNTING BRACKET TO SUIT TOYOTA HILUX (05-15 MODELS)

$77.61

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BCDC MOUNTING BRACKET TO SUIT TOYOTA HILUX (FROM 10/15)

$77.61

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BCDC MOUNTING BRACKET TO SUIT TOYOTA PRADO 150 LANDCRUISER

$77.61

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REDARC 20A IN-VEHICLE DC BATTERY CHARGER

$521.93

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REDARC 20A IN-VEHICLE DC BATTERY CHARGER (IGNITION CONTROL)

$521.92

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REDARC BCDC2420 Battery Charger
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REDARC 24V 20A IN-VEHICLE DC BATTERY CHARGER

$767.12

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REDARC 24V 20A IN-VEHICLE LIFEPO4 BATTERY CHARGER

$767.13

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REDARC 24V 20A IN-VEHICLE LIFEPO4 BATTERY CHARGER (LOW VOLTAGE)

$767.13

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REDARC 4X4 OFFROAD BATTERY CHARGING KIT

$1,000.00

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REDARC 6A DC TO DC BATTERY CHARGER

$352.42

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REDARC BCDC1225D DUAL INPUT 25A IN-VEHICLE DC BATTERY CHARGER

$609.10

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REDARC DUAL INPUT 40A IN-VEHICLE DC BATTERY CHARGER BCDC1240D

$707.50

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REDARC DUAL INPUT 50A IN-VEHICLE DC BATTERY CHARGER

$777.56

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REDARC DUAL SENSE SMART START BATTERY ISOLATOR 24V 100A SBI24D

$259.98

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REDARC DUAL SENSING SMART START BATTERY ISOLATOR 12V 100A SBI12D

$221.86

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REDARC SBI212D Battery Isolator
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REDARC DUAL SENSING SMART START BATTERY ISOLATOR 12V 200A

$438.22

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REDARC SBI12-GK Value Pack
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REDARC SBI12 AND G52-VVA VALUE PACK

$371.47

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REDARC SMART START BATTERY ISOLATOR & WIRING KIT 12V SBI12KIT

$365.46

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REDARC SMART START SBI 12V 100A SBI12

$186.52

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REDARC SMART START SBI 12V 200A

$379.42

or 4 payments of $94.86 with Afterpay

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REDARC SMART START SBI 24V 100A SBI24

$225.09

or 4 payments of $56.27 with Afterpay

redarc sbi224d
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REDARC SMART START SBI 24V 200A SBI224

$411.56

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REDARC THE MANAGER30

$1,964.53

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REDARC THE MANAGER30 WITH REDVISION DISPLAY

$2,395.00
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REDARC ULTIMATE REMOTE TOURING BATTERY CHARGING KIT

$4,145.00
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REDARC WEEKEND ESCAPE LITHIUM BATTERY CHARGING KIT

$950.00

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FAQs

How does a REDARC DC to DC charger work?

A good DC to DC charger isolates your vehicle's main battery and boosts the voltage from the alternator to ensure proper charging of your secondary battery. Keeping your auxiliary battery charged at 100% ensures sufficient power to operate you ancillary appliances such as lights, fridges and other camping gear.

It also will ensure the power can be sent over long cabling distance without loss, for example to a camper or caravan.

Many DC to DC chargers also features solar inputs to allow charging from solar panels or blankets.

What is the difference between BCDC and DCDC charger?

They are one in the same. A BCDC is a DC to DC charger. The BCDC is the start of the REDARC charger model number (e.g REDARC BCDC1225D) and means “Battery Charger Direct Current”.

What does DC to DC mean?

DC to DC refers to a product that converts a source of direct current (DC) from on voltage to another.

In the example of the vehicle dc dc charger, it is to convert the voltage of the alternator to one suitable for charging an auxiliary battery.

Many modern vehicles have smart alternators which do not produce a voltage sufficient for dual battery systems. That's where a DC to DC charge can come into play.

How many amps does a DC to DC charger draw?

Left over energy from an alternator under load is likely to be a max of 35-37 amps at 14V.

Before DC to DC chargers, any voltage drop between the alternator and the battery limited the charging current to the battery.

A relatively common 5% drop in voltage resulted in not 14 volts, but only 12.8 volts. In long cabling situations, such as to a caravan or camper trailer, that voltage may be under 12V. The rest lost to heat.

The BCDC chargers boost the voltage to compensate for this voltage drop.

What does BCDC charger mean?

Battery Charger Direct Current

What's the best DC to DC charger?

In our opinion the REDARC BCDC range is the best range in the market. Plus they are Australian made. Which is why we stock the full range in our store and online.