Orion-Tr Smart 48/12-20A

The Victron Orion-Tr Smart 48/12-20A isolated DC-DC charger is designed to convert an input voltage of 48V to an output voltage of 12V, with a maximum current of 20A. Its primary function is to properly charge a 12V service battery from a 48V power source, such as a starter battery or a main system, while extending battery life thanks to its three-stage adaptive charging algorithm.

Yes, the Orion-Tr Smart DC-DC charger can be configured to operate as a power supply. In fixed power supply mode, the output voltage will remain stable, regardless of the load applied or input voltage variations (within the specified range).

The Orion-Tr Smart 48/12-20A charger is a DC-DC "isolated" converter, meaning there is galvanic isolation between the input and output. This electrical isolation is critical to eliminate potential ground loops and improve electrical safety, especially in marine environments or recreational vehicles where multiple electrical systems coexist.

This specific model, the Orion-Tr Smart 48/12-20A, accepts an input voltage of 48V and provides an output voltage of 12V.

The maximum output current provided by this charger is 20 amperes (20A).

The charger includes an engine-running detection mechanism that supplies power only when the vehicle's engine is running. This prevents the inverter from discharging the starter battery when the alternator is not providing current and ensures that charging is activated only when the alternator is supplying power. This feature requires no intervention on the vehicle's system or installation of additional sensors.

The Orion-Tr Smart charger uses a three-stage adaptive charging algorithm: Bulk (constant current), Absorption (constant voltage), and Float (maintenance). This algorithm is optimized to extend battery life by ensuring a complete and appropriate charge.

The charger is equipped with integrated Bluetooth Smart technology, enabling wireless configuration and monitoring. You can use the VictronConnect app, available on Apple and Android smartphones and tablets, to customize various settings and view real-time data.

The Orion-Tr Smart charger is equipped with full electronic protections, including:

Overheat protection with power reduction.Overload protection.Short-circuit protection.Overheat protection for connectors.It also features an input voltage lock function.

Yes, an unlimited number of Orion-Tr Smart units can be connected in parallel to increase total output power, providing great flexibility for systems requiring higher current.

Yes, the Orion-Tr Smart charger is compatible with lithium batteries. Its three-stage adaptive charging algorithm is optimized for lead-acid and lithium batteries.

For lithium batteries, the absorption time is fixed and set by default to 2 hours. This setting can be adjusted via the VictronConnect app.

The charger should be mounted vertically on a non-flammable surface, with the power terminals facing downward. Ensure a minimum clearance of 10 cm above and below the unit for proper ventilation and cooling. The charger must be installed near the battery, but never directly above it to prevent damage from battery gases.

For battery connections, use flexible multi-strand copper cables. The diameter of individual strands must not exceed 0.4 mm or have a cross-sectional area of 0.125 mm² (AWG26). For example, a 16 mm² cable must have at least 122 strands (class 5 or higher). The installation must also include a fuse compliant with the product manual's specific recommendations for cable and fuse sizing.

During installation, read the manual carefully. Never place the charger on the battery. Avoid sparks near the battery, as it may emit explosive gases. Install the product in a heat-resistant environment, away from flammable chemicals, plastics, or textiles nearby. Ensure adequate ventilation and avoid covering the charger. Always check polarity before connecting the battery, as the product is not protected against reverse polarity.

The remote on/off function can be enabled or disabled via the dedicated remote control connector or through the VictronConnect application. This allows remote control of the charger, for example with a wired switch or a Battery Management System (BMS).

Yes, it is imperative to check the polarity before and during the battery connection. The product is not protected against reverse polarity, and an incorrect connection could cause damage.

Yes, it is normal for the Orion-Tr Smart DC-DC charger to emit a noticeable odor when operating at maximum power (or near it) and when it heats up. This odor is due to the internal potting of the charger and is not harmful to health.

Yes, the Orion-Tr Smart charger is compatible with ECU-controlled smart alternators. It includes an engine-running detection mechanism that manages charging appropriately, even with alternators featuring variable output voltage that may shut off when not required, thereby protecting both the alternator and the starter battery.

Yes, the Orion-Tr Smart DC-DC charger isolates the starter battery from the service battery when the engine is not running. This prevents the starter battery from being discharged by service battery loads when the vehicle is stationary.