The Victron Energy ORI244840120 Orion-Tr Smart 24/48-8.5 is an isolated DC-DC battery charger designed to charge a 48V-class service or auxiliary battery from a 24V DC source. It combines programmable charging with galvanic isolation, built-in Bluetooth Smart, smart-alternator compatibility, remote on/off control, and Victron's adaptive three-stage charging algorithm.

This model provides 8.5A continuous output at nominal output voltage and 40°C, with up to 480W continuous output power at 25°C. It can also operate as an adjustable DC power supply, allowing the output voltage to be configured through Bluetooth for compatible applications.

Key Technology

• Isolated DC-DC Battery Charging
  Provides controlled charging while maintaining galvanic isolation between the input, output, and case.

• Bluetooth Smart
  Built-in Bluetooth allows compatible smartphones, tablets, and other devices to monitor the charger, change settings, and perform supported firmware updates through VictronConnect.

• Instant Readout
  VictronConnect can display key charger information, including warnings and alarms, directly from the Device List without first establishing a full connection to the product.

• Adaptive 3-Stage Charging
  Uses a configurable bulk, absorption, and float charging algorithm designed for controlled charging of compatible battery chemistries.

• Fully Programmable Operation
  The charging algorithm can be configured for the connected battery, or the unit can be set to a fixed-output mode for use as a DC power supply.

• Smart Alternator Compatibility
  Built-in engine-running detection supports applications with smart alternators and can stop the charger when the engine is no longer running to help prevent unwanted starter-battery discharge.

• Remote On/Off
  A compatible remote switch or relay contact can be connected to the two-pole remote connector for external control.

• Parallel Operation
  Multiple compatible Orion-Tr Smart chargers can be connected in parallel when additional output-current capability is required.

• High-Temperature Protection
  The charger automatically reduces output current at elevated ambient temperatures to protect its internal electronics.

Best Uses

• 24V to 48V Battery Charging
  Designed for properly configured systems requiring controlled charging of a 48V-class auxiliary or service battery from a 24V DC source.

• Dual-Battery Systems
  Suitable for systems where the input and service battery operate at different nominal voltages and electrical isolation is required.

• Smart Alternator Systems
  Designed to work in compatible vehicle electrical systems using smart alternators and variable charging voltages.

• DC Power Supply Applications
  Can be configured for fixed-voltage output when a regulated DC power supply is required instead of battery-charging operation.

• Systems Requiring Galvanic Isolation
  Suitable where electrical separation between the source and output DC circuits is part of the system design.

• Expandable Charging Systems
  Parallel operation provides a way to increase available charging current using multiple compatible units when required by the system design.

Product Specifications

Smart Isolated Charging from 24V to 48V

The Victron Energy ORI244840120 Orion-Tr Smart 24/48-8.5 combines programmable battery charging, galvanic isolation, Bluetooth configuration, smart-alternator support, remote control, parallel capability, and thermal protection. It provides a versatile charging solution for properly designed systems requiring controlled charging of a 48V-class auxiliary battery from a 24V DC source.

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