Dual Battery Chargers

Q: What are dual battery chargers?

Dual battery chargers are designed to charge auxiliary batteries from a vehicle's charging system.

Q: Why use a dual battery charger?

They help provide controlled charging for auxiliary batteries used to power vehicle accessories.

Q: Are dual battery chargers suitable for 4WDs?

Yes, they are commonly used in 4WDs, caravans, campervans and touring vehicles.

Q: Can dual battery chargers charge lithium batteries?

Some models support lithium batteries, but you should confirm the charger's battery compatibility before installation.

Q: How do I choose a dual battery charger?

Consider battery chemistry, voltage, charging current, alternator type and power requirements.

Shop reliable dual battery chargers designed to support charging of auxiliary batteries in compatible vehicle electrical systems. Ideal for suitable 4WD, caravan, camping and touring applications. Pair with Dual Battery Accessories or browse DC to DC Chargers.

Premium Dual Battery Chargers - Keep Your Auxiliary Battery Charged On The Go

Essential for 4WDs, caravans, camper trailers, and touring vehicles, our range of dual battery chargers ensures your auxiliary battery stays charged from your alternator and solar panels while protecting your starter battery.

Premium Brands Available

Featuring industry-leading dual battery chargers from REDARC, PROJECTA, BAINTECH, and more - trusted by off-road enthusiasts and professionals across Australia.

Key Features

DC to DC Charging – Efficiently charge auxiliary batteries from your vehicle's alternator with multi-stage smart charging
Solar MPPT Integration – Dual input models combine alternator and solar charging for maximum power
Multi-Chemistry Support – Compatible with AGM, Gel, Calcium, and Lead Acid batteries; select models support Lithium (LiFePO4)
Power Range – From 25A to 50A output to suit different battery bank sizes and charging needs
Smart Alternator Compatible – Works with modern variable voltage alternators and Euro 5/6 vehicles
Extreme Conditions Rated – IP66/IP67 waterproof ratings and tested for high temperatures up to 80°C

Perfect For

Ideal for touring setups, dual-cab utes with canopies, camper trailers, caravans, and any vehicle running fridges, lighting, or accessories off an auxiliary battery. Whether you're weekend camping or extended remote travel, a quality dual battery charger is essential for reliable power management.

Available for delivery across Australia or professional installation at our NSW locations. Expert advice and system design support from the team at Frankie's Auto Electrics.