DC-DC Converters

Premium DC to DC Converters for Mobile & Off-Grid Systems

A reliable DC to DC converter is the backbone of multi-voltage power systems in caravans, RVs, marine vessels, and heavy-duty 4WDs. Whether you need to power standard 12V accessories from a high-capacity 48V battery bank or step up voltage from a 12V source to run a 24V system, our curated selection of Victron Energy converters ensures smooth and stable power delivery. By acting as a highly efficient voltage regulator, these units protect sensitive electronics and eliminate the need for carrying multiple battery banks of varying voltages. For those running heavy vehicles, a 24V to 12V converter is essential for bridging the gap between truck alternators and standard camping gear.

Isolated vs. Non-Isolated Converters

When selecting a Victron step-down or step-up converter, one of the primary decisions is choosing between isolated and non-isolated models.

Isolated DC-DC Converters feature galvanic isolation, which creates a physical electrical barrier between the input and output circuits. This design blocks stray currents, resolves ground loop issues, and is highly recommended for marine applications or complex RV setups with sensitive communication equipment.

Non-isolated DC-DC Converters share a common negative ground between the input and output. These are typically more compact and highly efficient, making them an excellent choice for straightforward setups like a standard 4WD canopy where the starter battery and auxiliary systems share the same chassis ground. For a deeper dive into which unit suits your build, read our complete guide on isolated vs non-isolated converters and DC-DC chargers.

Buck-Boost and Waterproof Options

Need to stabilise a fluctuating alternator output? A Buck-Boost DC-DC converter can seamlessly step up or step down voltage on the fly, ensuring your auxiliary batteries or loads receive a consistent feed regardless of input variations. Furthermore, if you are mounting equipment in harsh environments, explore our range of waterproof DC-DC converters. Featuring IP67 ratings, these rugged units are fully encapsulated to withstand dust, moisture, and extreme vibrations in off-road and boating conditions.

Sizing and Selection Tips for DC-DC Converters

Choosing the correct voltage converter ensures your appliances run safely without overloading the system. Follow these guidelines to match a product to your specific setup:

• Calculate Total Load: Add up the maximum continuous amperage (or wattage) of all the devices you plan to power simultaneously through the converter. Always select a unit with an output rating that exceeds this total load by at least 20 percent to provide a safe buffer.
• Identify Voltage Requirements: Determine if you need to step down (e.g., 48V to 12V for standard lighting), step up (e.g., 12V to 24V for specific marine pumps), or simply stabilise a varying voltage (12V to 12V) to protect delicate screens and monitors.
• Check Environmental Conditions: If the unit will be installed inside a sealed, dry cabin, an IP20-rated converter provides excellent heat dissipation. For engine bays, damp lockers, or exposed chassis mounts, an IP67-rated waterproof model is essential for long-term durability.
• Consider Adjustable Outputs: Many premium Victron converters feature adjustable potentiometers. This allows you to fine-tune the output voltage precisely to your equipment's requirements.

As an Australian family business with a decade of experience in off-grid power, we understand the demands of remote touring and marine exploration. Our team is dedicated to providing high quality products backed by industry-leading before and after support. Browse our complete range of DC-DC converters below and enjoy fast dispatch on reliable power solutions that keep you connected, no matter where your journey takes you.