Isolated DC-DC charger Orion Smart 24/24-17A (400W)

The Orion Smart 24/24-17A (400W) isolated DC-DC charger from VICTRON ENERGY, part number ORI242440120, is designed to optimize energy management in dual-battery systems for vehicles and boats. It provides efficient and controlled charging of service batteries from the starter battery or engine bank, with an input voltage range of 20-35V DC and a nominal output of 24.2V DC. This converter delivers a continuous current of 17A, providing 400W at 40°C, and up to 480W at 25°C.

Compatibility and advanced protection

The converter features engine-running detection, making it compatible with modern smart alternators that deliver variable voltage to improve energy efficiency. This prevents the starter battery from discharging when the alternator is not producing power and protects the alternator in systems with lithium batteries, which could otherwise overload it due to their low impedance. The device offers extended electronic protection against overloads, short circuits, and high temperatures, with automatic power reduction above 40°C. It provides 200V DC galvanic isolation between input, output, and case, ensuring electrical separation of systems. The electronics are protected to IP43, while the connection area is rated IP22.

Adaptive charging algorithm and connectivity

The Orion Smart 24/24-17A is equipped with a three-stage adaptive charging algorithm (Bulk, Absorption, Float) to extend the lifespan of lead-acid and lithium batteries. Absorption time is automatically adjusted for lead-acid batteries to avoid overcharging during shallow discharges and is fixed at 2 hours by default for lithium batteries. Integrated Bluetooth Smart connectivity via the VictronConnect app enables monitoring, configuration, and firmware updates, offering a programmable charging algorithm and eight battery presets. A remote on/off function is also available. For higher power requirements, multiple units can be connected in parallel without limit, providing a scalable solution for various applications.

Market positioning

Compared to non-isolated DC-DC converters in the same Orion Tr Smart range or solutions without smart alternator management, the Orion Smart 24/24-17A is positioned as the choice for installations requiring galvanic isolation and precise charge optimization, essential with Euro 5/6 alternators. Non-isolated models are better suited to situations where electrical separation is not a priority. Compared to other brands, the VictronConnect suite and flexible configuration options place this Orion Smart among the options to consider for complex integrations and systems demanding reliability and control.