Victron 18A 12V DC to 12V DC automatic multi-stage intelligent battery-to-battery charger
Victron 18A 12V DC to 12V DC automatic multi-stage intelligent battery-to-battery charger
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Victron Orion-Tr Smart 12/12-18A Isolated DC-DC Charger
Automatic Multi-Stage | Lead-Acid & Lithium | Bluetooth & Galvanic Isolation
The Victron Orion-Tr Smart 12/12-18A Isolated DC-DC Charger (MPN: ORI121222120) is an advanced, multi-stage battery-to-battery charger designed to efficiently charge a 12V auxiliary or leisure battery from a 12V starter battery or other 12V source. Ideal for vehicles, boats, and off-grid systems, this intelligent unit ensures optimal charging for both lead-acid and lithium batteries, even with smart alternators found in Euro 5 and Euro 6 engines.
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 and prevents current leakage, ensuring independent operation of your battery banks.
IMPORTANT NOTE: This 12V to 12V model is specifically designed for 12V input and 12V output systems. It is not compatible with 24V batteries or mixed 12V/24V battery configurations.
Key Features
| ▶ Adaptive 3-Stage Charging — Optimises battery life for lead-acid and lithium types. |
| ▶ Bluetooth Smart Connectivity — Monitor and configure settings via VictronConnect App. |
| ▶ Galvanic Isolation — Prevents current leakage and ensures independent battery operation. |
| ▶ Smart Alternator Compatibility — Fully functional with Euro 5/6 engines and engine running detection. |
| ▶ Remote On/Off Control — Allows for external switch or app control. |
| ▶ Parallel Operation — Connect multiple units to increase output current for larger systems. |
| ▶ Versatile Use — Functions as a battery charger or a stable DC power supply. |
Technical Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 8-17V |
| Output Current (Continuous @ 40°C) | 18A |
| Output Voltage Adjustable Range | 10-15V (12.2V nominal) |
| Max. Power Consumption (@ 25°C) | 280W |
| No Load Consumption | < 80mA |
| Operating Temperature Range | -20 to +55°C |
| Galvanic Isolation | 200Vdc |
| Dimensions (H x W x D) | 130 x 186 x 70 mm |
| Weight | 1.3 kg |
| Protection Category | IP43 (electronic components) |
Charging & Output Modes
The Victron Orion-Tr Smart 12/12-18A offers flexible operation modes to suit various power management needs:
| Mode | Description |
|---|---|
| Charger Mode | Utilises an adaptive 3-stage charge algorithm (Bulk, Absorption, Float) to ensure optimal and safe charging of your service battery. This mode is fully configurable via the VictronConnect App. |
| Power Supply Mode | Provides a stable, regulated output voltage, converting a variable DC input into a constant DC output. This is ideal for powering sensitive DC equipment that requires a consistent voltage supply. |
The charger's engine running detection mechanism ensures that the starter battery is not discharged when the engine is off, making it particularly suitable for vehicle applications.
Typical Applications
| Application | Description |
|---|---|
| Vehicles & Motorhomes | Charges leisure batteries from the starter battery via the alternator, especially effective with smart alternators (Euro 5/6). |
| Boats & Marine Systems | Ensures service batteries are charged from the engine's starter battery, maintaining isolation between banks. |
| Off-Grid & Solar Systems | Allows charging of a second battery bank from a primary battery bank that is charged by solar panels or other sources. |
| Sensitive Equipment Power Supply | Provides a stable 12V output for delicate electronics, even from fluctuating input voltages. |
Built-In Protection Functions
The Victron Orion-Tr Smart 12/12-18A is equipped with comprehensive safety features for reliable operation: • Overload protection • Short circuit protection • Over-temperature protection with power derating • Reverse discharge protection • Input under-voltage shutdown • Connector over-temperature protection.
Common Questions
What is galvanic isolation and why is it important?
Galvanic isolation means the input, output, and case are electrically separated up to 200Vdc. This prevents unwanted current leakage between battery banks or to ground, which can interfere with sensitive electronics, disturb systems with different ground potentials, or cause corrosion in metal hulls on boats.
Can this charger be used with smart alternators (Euro 5/6 engines)?
Yes, the Orion-Tr Smart is specifically designed to work effectively with smart alternators. It features an engine running detection mechanism that ensures charging only occurs when the engine is operating, preventing discharge of the starter battery.
How does the multi-stage charging algorithm benefit my batteries?
The adaptive 3-stage (Bulk, Absorption, Float) charging algorithm optimises the charging process for both lead-acid and lithium batteries. It ensures a full charge while preventing overcharging, which extends battery lifespan and maintains performance.
Can I monitor and control the charger remotely?
Absolutely. With built-in Bluetooth Smart, you can connect to the charger using the VictronConnect App on your smartphone or tablet. This allows you to monitor live data, change settings, and update firmware remotely. It also supports remote on/off control via a hard-wired switch or the app.
Installation Notes
- Ensure adequate ventilation around the unit for optimal cooling.
- Mount the charger with screw terminals facing downwards to maintain its IP43 protection rating.
- Always install appropriate fuses in both input and output wiring as per manufacturer recommendations.
- Carefully check battery polarity before connecting to prevent damage.
- Refer to the detailed user manual for wiring diagrams and specific installation instructions.
Before You Buy
- Confirm your system uses 12V input and requires 12V output for charging.
- Verify compatibility with your battery type (lead-acid or lithium).
- Consider your total power requirements; multiple units can be paralleled for higher output.
- Ensure you have access to a Bluetooth-enabled device for initial setup and monitoring.
- Consult a qualified installer if you are unsure about system design or wiring.
All specifications are based on manufacturer data and are subject to change. Please verify product details and compatibility for your specific application. This product is covered by a 5-year manufacturer warranty.
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