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Shop DC-DC Chargers

DC-DC Chargers

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RENOGY

Renogy IP67 50A DC-DC Charger With Bluetooth

$649.99 ^{^}

(5)

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Projecta

Projecta Workshop Battery Charger - 21A, 6/12/24V - HDBC35

$1,099.00 ^{^}

(3)

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Schumacher Battery Charger - 6 to 12V 1A, SPI1

$94.99 ^{^}

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Projecta

Projecta Charger To Suit HP900 HP1200 - 1A, 240V - HPC1A

$39.99 ^{^} $49.99 ^{^}

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Schumacher Battery Charger - 12V 10A, SPI10

$249.99 ^{^}

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Projecta

Projecta Workshop Battery Charger - 12A, 6/12/24V - HDBC20

$999.00 ^{^}

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Projecta

Projecta Charger For HP2200 - 4A, 240V - HPC4A

$158.39 ^{^} $197.99 ^{^}

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Catalogue Out Now

Sales Ends Wednesday
3rd June 2026
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Schumacher Battery Charger - 12V 3A, SPI3

$169.99 ^{^}

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Projecta

Projecta Intelli-Charge Remote Control - ICREMOTE

$134.39 ^{^} $167.99 ^{^}

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Projecta

Projecta Charger To Suit HP2000 - 4A, 240V - HP2000C

$131.99 ^{^} $164.99 ^{^}

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Hulk 4X4

Hulk 4x4 7 Stage 12V 3.8A Fully Automatic Battery Charger - HU6552

$159.99 ^{^}

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Hulk 4X4

Hulk 4x4 Multi Stage 24V 20A DC-DC Battery Charger - HU6520

$1,299.00 ^{^}

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Hulk 4X4

Hulk 4x4 9 Stage 12V/24V 25A Fully Automatic Battery Charger - HU6558

$799.00 ^{^}

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Hulk 4X4

Hulk 4x4 Multi Stage 12V/24V 25A DC-DC Battery Charger - HU6525

$999.00 ^{^}

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Hulk 4X4

Hulk 4x4 Multi Stage 12V/24V 40A DC-DC Battery Charger - HU6540

$1,249.00 ^{^}

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Hulk 4X4

Hulk 4x4 5 Stage 12V 4-16A 4-in-1 Battery Charger - HU6560

$749.00 ^{^}

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Hulk 4X4

Hulk 4x4 8 Stage 12V/24V 7.5A Fully Automatic Battery Charger - HU6554

$249.99 ^{^}

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JAYLEC

Jaylec Battery Charger Dc-Dc 30Amp 3 Stage - PTDC12V30A

$399.00 ^{^}

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JAYLEC

Jaylec Gang Battery Charger 12 - 72V - TO4744

$6,499.00 ^{^}

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Hulk 4X4

Hulk 4x4 9 Stage 12V/24V 15A Fully Automatic Battery Charger - HU6556

$599.00 ^{^}

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Hulk 4X4

Hulk 4x4 5 Stage 6V/12V 1A Fully Automatic Battery Charger - HU6550

$109.99 ^{^}

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JAYLEC

Jaylec Battery Charger 12V 4 Stage 4 Amp Automatic Switching Non Adjustable Jaylec - BC9000

$179.99 ^{^}

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JAYLEC

Jaylec Battery Charger 12V 4 Stage 10Amp Automatic Switching Adjustable Jaylec - BC9010

$399.00 ^{^}

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Showing 1 - 23 of 23 Results

Discover Our SUPER Range of DC-DC Chargers

DC to DC chargers provide a reliable way to charge auxiliary batteries in vehicles, ensuring consistent power delivery for all your 12V or 24V systems. Designed for 4WDs, caravans, boats, and off-grid setups, these protect both your vehicle’s main battery and auxiliary battery, while efficiently managing voltage and current. At Supercheap Auto, our range of DC-DC chargers deliver dependable performance, improved battery life, and peace of mind for every journey.

What is a DC-DC charger?

A DC to DC charger takes power from either your vehicle’s alternator or solar panel setup, and safely charges an auxiliary battery. Unlike standard split-charge systems, DC to DC chargers regulate voltage and current to prevent undercharging or overcharging, even when the alternator output fluctuates. These are ideal for powering fridges, lights, winches, solar setups, and other electrical equipment from a secondary battery, whether at home, on the road, or off-grid. DC to DC chargers also protect batteries from damage, improve charging efficiency, and extend overall battery life.

How to choose a DC-DC charger

Choosing the right DC to DC charger depends on your vehicle, battery type, and power requirements. Key factors include input voltage compatibility (6V, 12V, 24V etc), output current, auxiliary battery type (AGM, Gel, Lithium), and features like solar input or Bluetooth monitoring. Consider the environment too, checking for IP22, IP65, or IP67 ratings for water and dust resistance, especially for off-road or outdoor use. Matching the DC-DC charger to your battery and intended load ensures safe, efficient, and reliable charging every time.

Power up with our range of DC-DC chargers

At Supercheap Auto, we offer DC-DC chargers to suit all needs, from compact units for weekend trips to heavy-duty models for off-grid adventures. You’ll find options from Matson, Hulk 4x4 and more, offering a mix of different voltages, current capacities, and features. Many models include Bluetooth connectivity for monitoring charge status and performance, while IP-rated units ensure durability in tough conditions. Whether you're powering a secondary battery in a 4WD, caravan, boat, or solar setup, our range of DC-DC chargers offer a solution for almost every application.

Shop DC-DC chargers at Supercheap Auto

DC-DC chargers make managing auxiliary power simple, safe, and efficient by keeping batteries properly charged and protected. At Supercheap Auto, our range from trusted brands like Hardkorr and Renogy, offer robust designs and features for off-road and touring. Whether it’s keeping a fridge running on a long trip, powering caravan accessories, or supporting off-grid setups, our DC-DC chargers ensure your batteries are always ready when you need them.

Frequently Asked Questions - DC-DC Chargers

How does a DC-DC charger work?

A DC-DC (direct current to direct current) charger converts power from your vehicle’s alternator or solar panels and delivers the right voltage and current to your secondary battery. This allows the auxiliary battery to charge safely and efficiently while protecting both batteries and maintaining reliable performance for any connected devices.

Why do I need a DC-DC charger in my vehicle?

If you run a secondary battery for accessories like fridges, lights, or other electronics during 4WD trips, camping, or off-road adventures, a DC-DC charger is essential. It ensures your auxiliary battery charges correctly while driving, prevents your main battery from being overworked, and keeps your vehicle’s electrical system running safely with high-power setups.

Can a DC-DC charger charge lithium batteries?

Yes, many DC-DC chargers work with lithium batteries, but you need to choose one designed for lithium chemistry. Lithium batteries need precise voltage and current control, and the right DC-DC charger keeps these charging safely, efficiently, and quickly without risk of damage.

Do DC-DC chargers work while my engine is off?

DC-DC chargers will accept charging input from either the vehicle's alternator or solar. If the vehicle is turned off, the DC-DC will not receive charge from the alternator, but if you have solar panels, it will accept charge from these while exposed to sunlight.

How do I maintain a DC-DC charger for long life?

To keep your DC-DC charger working reliably, make sure it stays clean, dry, and well-ventilated. Check wiring connections regularly to ensure these are secure and free from corrosion, and avoid exposing the charger to excessive heat, water, or vibration. Following the manufacturer’s instructions for installation and use will also help extend its lifespan and maintain safe charging.

Shop DC-DC Chargers

DC-DC Chargers

RENOGY

Projecta

Projecta

Projecta

Projecta

Projecta

Projecta

Hulk 4X4

Hulk 4X4

Hulk 4X4

Hulk 4X4

Hulk 4X4

Hulk 4X4

Hulk 4X4

JAYLEC

JAYLEC

Hulk 4X4

Hulk 4X4

JAYLEC

JAYLEC

Discover Our SUPER Range of DC-DC Chargers

What is a DC-DC charger?

How to choose a DC-DC charger

Power up with our range of DC-DC chargers

Shop DC-DC chargers at Supercheap Auto

Frequently Asked Questions - DC-DC Chargers

How does a DC-DC charger work?

Why do I need a DC-DC charger in my vehicle?

Can a DC-DC charger charge lithium batteries?

Do DC-DC chargers work while my engine is off?

How do I maintain a DC-DC charger for long life?