Victron Orion-Tr Smart 48/48-8A DC-DC Charging Booster, 380W, Isolated

The Victron Orion-Tr Smart 48/48-8A (MPN: ORI484838120) is a galvanically isolated DC-DC charge booster designed for the controlled charging of a 48 V service battery from a separate 48 V system. It delivers 8 A of charging current and 380 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.

Regulated charging between two 48 V systems

• 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.

Galvanic Isolation Between Two 48 V Systems

It enables the regulated charging of a 48 V battery from a separate 48 V source system. Although both systems have the same nominal voltage, the device ensures a controlled charging process with an individually adjustable output voltage. The input, output, and housing are galvanically isolated from each other at 200 VDC. This keeps the two systems electrically separate. This feature is particularly advantageous for applications with separate starter and service battery systems.

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 cut-off, 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: 32–70 V
• Undervoltage shutdown: 28 V
• Restart after undervoltage: 30 V
• Nominal output voltage: 48.2 V
• Output voltage adjustment range: 40–60 V
• Continuous output current at 40 °C: 8 A
• Maximum output current for 10 seconds: 15 A at rated output voltage minus 20%
• Continuous output power at 25 °C: 430 W
• Continuous output power at 40 °C: 380 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 48/48-8A DC-DC Charging Booster 380W, isolated