DC-DC Chargers

If you've got a dual battery setup, a DC-DC charger is the smartest way to keep your auxiliary battery charged while you're on the move.

These chargers pull power from your vehicle's alternator as you drive and deliver it to your second battery in a controlled, multi-stage charge cycle. That means by the time you pull up at camp, your fridge, lights, and accessories have plenty of juice to run all night. No guesswork, no flat batteries, no cutting trips short.

Most DC-DC chargers also include built-in MPPT solar regulators, so when you stop driving, they automatically switch over and draw charge from your solar panels instead. It's seamless. Whether you're rolling down the highway or parked up in the shade, your battery's being fed efficiently.

Our chargers are compatible with common battery chemistries including lithium and AGM, with simple push-button selection to match your setup. They're rated to IP66, so dust, water splashes, and harsh Aussie conditions won't slow them down. Mount them in a canopy, under a tray, or in a dedicated battery box and they'll keep doing their job.

Installation is straightforward thanks to quick-connect Anderson-style plugs and plug-and-play wiring harnesses. If you want to simplify things further, check out our bundles that pair chargers with wiring kits or solar extension leads so you're not chasing parts across multiple orders.

Whether you're running a 25A or 40A unit, you'll get fast, reliable charging that keeps pace with how you use your gear. No fuss, no drama, just power when you need it.

Why choose 4WD Supacentre for your DC-DC chargers?

• Quality guaranteed - Our chargers are tested in real Australian conditions, from dust storms to tropical downpours
• Expert advice - Our team know what works and can help you size your system correctly
• Fast delivery - Australia-wide shipping plus Click & Collect at 42+ stores nationwide
• Great value - Premium DC-DC chargers without the premium price tag thanks to our direct supply chain
• Peace of mind - Industry-leading warranties and easy returns if you're not completely satisfied

Ready to power up your next adventure? Browse our complete battery chargers range and find your ideal setup today.