Victron Energy Orion-Tr Smart DC‑to‑DC Charger 12V→12V 18A (220W) with Bluetooth, three-stage charging

The Victron Energy Orion-Tr Smart DC-to-DC Charger is a compact, three-stage 12V-to-12V charging unit with Bluetooth monitoring that safely transfers up to 220W (18A) from an alternator or battery to a service battery.

Designed for mobile power systems in vehicles and boats, this Orion-Tr charger combines professional three-stage charging with onboard Bluetooth for monitoring and configuration via the VictronConnect app. It supports lead-acid and lithium chemistries, can be paralleled to scale output, and simplifies installation with screw terminals—making it a flexible option when you need reliable DC-to-DC battery charging away from shore power.

How does the Orion-Tr manage battery chemistry and health?

The charger uses a three-stage charging algorithm (bulk, absorption, float) that adapts to common battery types so charge profiles remain safe and efficient. Settings for lead-acid and lithium are available and adjustable via Bluetooth, ensuring the correct voltage and absorption times for your battery bank.

• Three-stage charging to optimize charge and battery lifespan
• Selectable profiles for lead-acid and lithium batteries
• Adjustable parameters using the VictronConnect app for fine tuning

Can I use the Orion-Tr with my vehicle alternator and start battery?

Yes—the Orion-Tr is built for dual-battery setups where the alternator or starter battery provides charge to a separate service battery. It isolates the starter battery while efficiently transferring power to the service bank, protecting your vehicle’s starting capacity.

• Designed specifically for alternator-to-service battery charging
• Prevents backfeed and protects the starter battery
• Automatic switching and intelligent charge control during engine run

What monitoring and control options are available via Bluetooth?

Built-in Bluetooth lets you view real-time status, historical data, and change charging parameters from a smartphone or tablet using VictronConnect. This makes commissioning and troubleshooting straightforward without extra wiring or displays.

• Real-time charge status and logs visible in VictronConnect
• Remote adjustment of charge profile and thresholds
• Firmware updates and diagnostics through the app

How easy is installation and can I increase power output?

Installation is straightforward: screw terminals simplify wiring and there’s no need for specialized connectors. If you need more charging capacity, multiple Orion-Tr units can be paralleled to achieve higher total current.

• Simple screw-terminal wiring for quick installation
• Parallelable units for scalable power up to the system requirement
• Compact form factor fits into tight compartments aboard vehicles and boats

Who is this for: The Victron Energy Orion-Tr Smart DC-to-DC Charger suits vanlifers, motorhome and caravan owners, boaters, and professional vehicle upfitters who need a reliable, configurable way to charge a secondary battery from an alternator or DC source. It’s ideal for users who want app-based monitoring, compatibility with lead-acid and lithium batteries, and the option to expand charging capacity by paralleling multiple units.