Victron Orion-Tr Smart Isolated DC-DC Battery Charger

The Victron Energy Orion-Tr Smart 12V to 48V Isolated DC-DC Battery Charger provides an efficient way to charge a higher-voltage auxiliary battery bank from a lower-voltage DC power source. Designed for dual-battery systems in RVs, boats, service vehicles, and off grid applications, this charger combines intelligent battery charging, built-in Bluetooth connectivity, and galvanic isolation.

The Orion-Tr Smart converts DC power from a vehicle's starter battery or alternator into a regulated charging output for a compatible auxiliary battery bank. Its adaptive charging algorithm helps maintain battery health, while engine-running detection prevents unnecessary starter battery discharge when the engine is turned off.

With the VictronConnect app, users can monitor charger operation, configure charging profiles, and adjust settings wirelessly. The isolated design also allows the input and output circuits to maintain separate grounding arrangements.

Key Features and Benefits

• DC-to-DC Battery Charging: Charges a higher-voltage auxiliary battery bank from a lower-voltage DC power source.
• Built-In Bluetooth Smart: Monitor and configure charger operation wirelessly using the VictronConnect app.
• Galvanic Isolation: Electrically separates input and output circuits, allowing independent grounding arrangements.
• Adaptive Charging: Uses bulk, absorption, and float charging stages to support efficient battery charging.
• Lead-Acid and Lithium Compatibility: Supports compatible lead-acid and lithium battery systems with configurable charging settings.
• Smart Alternator Compatibility: Engine-running detection helps prevent unwanted discharge of the starter battery.
• Remote On/Off Control: Supports external switching and compatible control systems.
• Adjustable Output Voltage: Allows configuration for compatible battery charging and DC power supply applications.
• Parallel Operation: Multiple compatible chargers can be connected in parallel to increase available charging capacity.
• Short-Circuit Protection: Built-in protection helps safeguard the charger during output fault conditions.
• Temperature Protection: Automatically reduces output current when operating temperatures become elevated.
• Compact Design: Suitable for installations where space is limited.

Charge an Auxiliary Battery from a Vehicle Alternator

The Orion-Tr Smart is designed for dual-battery systems that use a vehicle's starter battery and alternator to charge a separate auxiliary battery bank.

Instead of directly connecting batteries with different voltage requirements, the charger converts and regulates DC power to deliver an appropriate charging output to the auxiliary battery.

This makes it useful for vehicles equipped with higher-voltage house battery systems, including specialized RV, mobile power, and marine installations.

Adaptive Charging for Lead-Acid and Lithium Batteries

The Orion-Tr Smart uses an adaptive charging algorithm with bulk, absorption, and float stages to help charge compatible battery types.

For lead-acid batteries, the charger adjusts absorption time according to battery discharge conditions. Following shallow discharges, absorption time is reduced to help prevent overcharging. After deeper discharges, absorption time increases to help restore battery capacity.

For compatible lithium batteries, charging parameters can be configured according to the battery manufacturer's recommendations. The charger can also operate in a fixed-voltage power supply mode when appropriately configured.

Bluetooth Monitoring with VictronConnect

Built-in Bluetooth allows the Orion-Tr Smart to communicate directly with the VictronConnect app on compatible smartphones and tablets.

Users can configure charging parameters, select operating modes, monitor charger status, and adjust engine-running detection settings without requiring an external display.

The wireless interface also simplifies setup and troubleshooting for installers and system owners.

Galvanic Isolation for Flexible Electrical Systems

The isolated design electrically separates the charger's input and output circuits, allowing the connected electrical systems to maintain separate grounding arrangements.

This is particularly valuable in marine and specialized vehicle applications where electrical isolation is required between the starter battery system and auxiliary battery bank.

Galvanic isolation also helps prevent unwanted current paths between the connected DC systems.

Smart Alternator and Engine-Running Detection

The Orion-Tr Smart includes an engine-running detection mechanism designed for vehicles equipped with conventional and smart alternators.

When properly configured, the charger detects whether the engine is running and controls charging accordingly. This helps prevent the auxiliary battery from draining the starter battery while the vehicle is parked.

Remote on/off control provides additional flexibility for integrating the charger with external switches and compatible control systems.

Parallel Charging and System Expansion

For applications requiring additional charging capacity, multiple compatible Orion-Tr Smart chargers can be connected in parallel.

This allows system designers to increase available charging current while retaining the benefits of regulated DC-to-DC charging.

Each charger must be installed and configured according to Victron's wiring, protection, and battery compatibility requirements.

Ideal Applications

• RV and camper auxiliary battery charging
• Marine dual-battery electrical systems
• Vehicle alternator charging for higher-voltage battery banks
• Mobile workshops and service vehicles
• Off grid solar systems with auxiliary DC charging sources
• Compatible lithium and lead-acid battery systems
• Specialized DC power conversion applications

Product Specifications

Frequently Asked Questions