Victron Orion-Tr Smart 24/48-8.5A DC-DC Charging Booster 400W, Isolated

The Victron Orion-Tr Smart 24/48-8.5A (MPN: ORI244840120) is a galvanically isolated DC-DC charge booster for the controlled charging of a 48 V service battery from a 24 V system. It delivers 8.5 A of charging current and 400 W of continuous output power at 40 °C. Thanks to built-in Bluetooth, charging parameters and operating conditions can be conveniently configured and monitored via the VictronConnect app.

Controlled charging from 24 to 48 volts

• 200 VDC galvanic isolation between input, output, and housing
• Adaptive three-stage charging algorithm for compatible lead-acid and lithium batteries
• Eight preconfigured battery profiles
• Remote on/off control
• Integrated motor shutdown detection
• Charger and power supply modes
• Multiple devices can be connected in parallel
• Over-temperature, overload, and short-circuit protection
• Configuration and monitoring via Bluetooth and VictronConnect

Adaptive charging method for 48 V batteries

In charger mode, the converter operates with three charging stages: constant current, constant voltage, and trickle charge. The duration of the constant-voltage phase can be adaptively adjusted based on the previous charging history. Eight preconfigured battery profiles are available for various lead-acid and lithium batteries. Additionally, the charging parameters can be individually adjusted according to the battery manufacturer’s specifications.

Galvanically isolated voltage conversion from 24 to 48 volts

It enables the regulated charging of a 48 V battery from a separate 24 V power source. The charge booster raises the input voltage to the charging level required for the connected battery. The input, output, and housing are galvanically isolated from each other at 200 VDC. This ensures that the systems remain electrically separate. This feature is particularly advantageous for applications with different battery voltages and separate electrical circuits.

Bluetooth Configuration with VictronConnect

The charge booster can be configured and monitored via the VictronConnect app using the built-in Bluetooth interface. The charging profile, charging voltages, input voltage lockout, and engine shutdown detection can be customized. Additionally, device status and warning messages can be viewed. The app does not display input or output current for this model. A VE.Direct connection is not available.

Installation and Connection Instructions

The charge booster must be mounted vertically on a non-flammable surface, with the power terminals facing downward. To ensure adequate cooling, at least 10 cm of clearance is required above and below the unit. Avoid mounting it directly above a battery. The Orion-Tr Smart is not reverse-polarity protected. Therefore, before connecting, check the polarity of the input and output sides as well as the suitability of the selected battery profile. The installation requires external battery fuses and copper cables sized appropriately for the cable length.

Technical Specifications

• Input voltage range: 16–35 V
• Undervoltage shutdown: 14 V
• Restart after undervoltage: 15 V
• Nominal output voltage: 48.2 V
• Output voltage adjustment range: 40–60 V
• Continuous output current at 40 °C: 8.5 A
• Maximum output current for 10 seconds: 15 A
• Short-circuit output current: 25 A
• Continuous output power at 25 °C: 480 W
• Continuous output power at 40 °C: 400 W
• Efficiency: 89%
• Operating temperature: −20 to +55 °C
• Power derating: 3% per °C above 40 °C
• Humidity: maximum 95%, non-condensing
• Protection rating: IP43 for electronic components, IP22 for the connection area
• Weight: 1.6 kg
• Dimensions: 130 × 186 × 70 mm

Package Contents

1x Victron Orion-Tr Smart 24/48-8.5A DC-DC Charging Booster 400W, isolated