Victron Orion-Tr Smart 12V Battery to Battery Isolated Charger

The Victron Orion-Tr Smart Isolated DC-DC Charger is a professional-grade battery-to-battery charger for dual battery systems in vehicles, boats, caravans, and off-grid installations where the starter battery and alternator charge a separate service battery. With galvanic isolation of 200V DC between input, output, and chassis, it lets the service battery have a fully independent ground reference - ideal where separate chassis grounds are required, such as marine systems with cathodic protection, vehicles with sensitive electronics, or a lithium service battery paired with a lead-acid starter battery.

Available in four 12V-input configurations - 12/12-18A (220W), 12/12-30A (360W), 12/24-10A (240W), and 12/24-15A (360W) - it covers the most common 12V vehicle and marine dual-battery scenarios, whether charging a 12V service battery at up to 30A or stepping up to a 24V service battery at up to 15A. All models share an 8-17V input range with a built-in buck-boost function that keeps output stable even when input voltage briefly dips below the nominal output voltage, for reliable charging across the full alternator operating range from cold start to full charge.

A key feature is intelligent engine-shutdown detection, built for modern vehicles with smart ECU-controlled alternators that shut down when the engine stops - a condition that can cause a conventional DC-DC charger to drain the starter battery. The Orion-Tr Smart monitors input voltage behaviour over time and automatically disables charging once it determines the alternator is no longer running, without needing an extra relay or ignition-sensing wire.

Built-in Bluetooth Smart pairs directly with the VictronConnect app on iOS and Android - no dongle required - for selecting lead-acid or lithium charge profiles, configuring engine detection, and monitoring live input/output voltage. Any number of units can be paralleled for larger charging current, and all models are short-circuit proof with remote on/off terminals.

Features

Intelligent Engine-Shutdown Detection

Monitors input voltage behaviour over time to automatically detect when a smart, ECU-controlled alternator has stopped running, and disables charging to protect the starter battery - no extra relay or ignition wire needed.

Galvanic Isolation - Independent Ground Reference

200V DC isolation between input, output, and chassis lets the service battery use a fully independent ground - essential for cathodic-protection marine systems, sensitive vehicle electronics, or mixed lithium/lead-acid battery banks.

Bluetooth Smart with VictronConnect

Pairs directly with the VictronConnect app on iOS and Android - no dongle required - for selecting lead-acid or lithium charge profiles, configuring engine detection, adjusting output voltage, and monitoring live input/output voltage.

Buck-Boost Input Regulation

An 8-17V input range with built-in buck-boost keeps output stable even when input voltage briefly sags below nominal, maintaining reliable charging across the full alternator operating range.

Parallel Operation, Remote On/Off

Any number of units can be paralleled on input and output for higher charging current, and remote on/off terminals allow integration with a BMS, ignition switch, or other external control.

Short-Circuit Proof, Automatic Thermal Derating

All models are fully short-circuit proof, deliver full rated output up to 40°C, and automatically derate power above that threshold across an operating range up to 55°C.

Specifications

Datasheets and Manuals