Victron Energy | Orion-Tr Smart Series Victron Orion-Tr Smart 24/12-20A Isolated DC-DC Charger Automatic Multi-Stage Charging | Lead Acid & Lithium Compatible | Bluetooth Connectivity The Victron Orion-Tr Smart 24/12-20A Isolated DC-DC Charger is a professional, adaptive 3-stage battery-to-battery charger designed for efficient and safe charging of a 12V service battery from a 24V source battery or alternator. Ideal for dual battery systems in vehicles, boats, and off-grid setups, this intelligent unit ensures your auxiliary batteries are always optimally charged, whether they are lead-acid or lithium types. Featuring built-in Bluetooth connectivity, the Orion-Tr Smart allows for convenient monitoring and configuration via the VictronConnect App. Its galvanic isolation provides enhanced safety by preventing current leakage and ground loops, making it suitable for complex electrical systems and sensitive electronics. MODEL REFERENCE: This is the Victron Orion-Tr Smart 24/12-20A Isolated DC-DC Charger, SKU VOS2412-20I. Key Features ▶ Bluetooth Connectivity — Monitor and configure settings wirelessly via the VictronConnect App. ▶ Adaptive 3-Stage Charging — Optimises battery health with Bulk, Absorption, and Float stages for lead-acid and lithium batteries. ▶ Galvanic Isolation — Electrically separates input and output, preventing ground loops and reducing electrical noise. ▶ Engine Running Detection — Automatically activates charging when the engine is running, protecting the starter battery. ▶ Remote On/Off Control — Allows for manual or automatic control via a switch, relay, or the VictronConnect App. ▶ Parallel Capability — Connect multiple units in parallel to increase the total charging capacity for larger systems. ▶ Power Supply Mode — Can function as a stable DC power supply with a configurable output voltage. Technical Specifications Parameter Value Input Voltage Range 16-35V DC Output Current (Continuous) 20A Nominal Output Voltage 12.2V DC Output Voltage Adjustable Range 10-15V DC Max. Power Output (25°C) 300W Max. Power Output (40°C) 240W No Load Consumption < 100mA Standby Consumption < 1mA Operating Temperature Range -20 to +55°C Galvanic Isolation 200V DC Max. Cable Cross Section 16mm² (AWG6) Dimensions (H x W x D) 130 x 186 x 70 mm Weight 1.3 kg Charging & Output Modes The Victron Orion-Tr Smart charger offers versatile operation modes to suit various power management needs: Mode Description Charger Mode Utilises an adaptive 3-stage algorithm (Bulk, Absorption, Float) to intelligently charge a 12V service battery from a 24V source. Optimised for both lead-acid and lithium battery types, ensuring full and safe charging. Power Supply Mode Provides a stable, regulated DC output voltage, adjustable within 10-15V. This mode is ideal for powering sensitive 12V DC equipment directly from a 24V battery bank, protecting devices from voltage fluctuations. Typical Applications Application Description Vehicles & RVs Efficiently charges a 12V leisure or auxiliary battery from a 24V starter battery, especially beneficial with smart alternators (Euro 5/6) that may provide inconsistent charging. Marine Systems Ideal for charging a 12V house battery bank from a 24V engine start battery, ensuring reliable power for onboard electronics and appliances. Off-Grid & Solar Systems Converts a 24V solar battery bank to charge a separate 12V battery bank, allowing for mixed voltage systems without upgrading existing 24V solar charge controllers. Mobile Workstations Provides stable 12V power for sensitive equipment from a 24V power source, protecting against voltage fluctuations and electrical noise. Built-In Protection Functions The Victron Orion-Tr Smart DC-DC Charger incorporates multiple safety features for reliable operation: Overload Protection • Overheating Protection • Short Circuit Protection • Overvoltage Protection • Reverse Discharge Protection (of the source battery) • Engine Shutdown Detection (prevents starter battery drain). Common Questions What is galvanic isolation and why is it important? Galvanic isolation electrically separates the input and output circuits. This is crucial for preventing ground loops, reducing electrical noise, and enhancing safety, especially in marine environments or systems with sensitive electronics. Can this charger be used with smart alternators? Yes, the Orion-Tr Smart is specifically designed to be compatible with smart alternators (e.g., Euro 5/6 engines). It features an engine running detection mechanism to ensure consistent and effective charging, overcoming the variable voltage output of smart alternators. Is it suitable for both lead-acid and lithium batteries? Absolutely. The charger features an adaptive 3-stage charging algorithm that can be configured via the VictronConnect App to suit the specific charging requirements of both lead-acid (including AGM, Gel, Flooded) and lithium (LiFePO4) battery types. Can I connect multiple units in parallel? Yes, an unlimited number of Victron Orion-Tr Smart chargers can be connected in parallel to increase the total output current and power, making it scalable for larger battery banks or higher power demands. Installation Notes Mount vertically on a non-flammable surface with power terminals facing downwards for optimal cooling. Ensure adequate clearance (min. 10 cm) above and below the unit for proper ventilation. Install close to the battery, but never directly above it to avoid damage from gassing. Always verify battery polarity before connecting to prevent damage; reverse polarity is not covered by warranty. Refer to the official Victron manual for detailed wiring diagrams and fuse recommendations. Before You Buy Confirm your source battery is 24V and your target battery is 12V. This unit cannot charge 24V from 12V or 24V. Check the maximum current draw of your 12V loads to ensure the 20A output is sufficient. Consider cable sizing; the unit supports up to 16mm² (AWG6) cables. Ensure you have a compatible smartphone or tablet for using the VictronConnect App for setup and monitoring. For optimal performance and safety, professional installation is recommended. Always verify product specifications and compatibility with your specific system requirements before purchase. This product is covered by a 5-year manufacturer warranty.
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