Victron Energy Orion-Tr Smart Non-Isolated DC-DC Charger (12/24V)

The Orion-Tr Smart non-isolated DC-DC charger turns your engine alternator (or any source battery) into a smart, multi-stage charger for a second bank — in the most efficient, compact package Victron makes. On a boat or vehicle, the long run from the alternator to the house battery sags under load, so the bank never quite fills. The Orion-Tr Smart takes that variable input and delivers a precise, fully regulated charge to the service battery while protecting the starter battery it draws from. Set it up over Bluetooth, and it works with lead-acid and lithium banks alike.

Non-isolated: efficient and compact for common-ground systems

This model shares a common negative between the input and the battery being charged — the right choice for the many marine, RV, and vehicle systems where the source and destination banks already share a ground. With no isolation transformer, it runs cooler, more efficiently, and in a smaller, lighter housing. If your system needs the input and output grounds electrically separated — mixed-grounding installs or sensitive electronics — choose the isolated Orion-Tr Smart instead.

Adaptive 3-stage charging — lead-acid and lithium

The charger uses a true bulk → absorption → float algorithm. For lead-acid banks it shortens absorption after shallow discharges and extends it after deep ones; for lithium it uses a fixed absorption time (2 hours default). Profiles are fully configurable to your battery maker's spec, or you can set a fixed output voltage and run the unit as a stabilized DC power supply (constant-voltage source).

Built for modern “smart” alternators (Euro 5 / Euro 6)

Newer vehicles and engines use ECU-controlled alternators whose output voltage can drop too low to charge a service battery even while running. The Orion-Tr Smart's engine-running detection starts charging only when the engine is actually running and stops when it isn't — so it never drains the starter battery at rest. That makes it equally at home on classic and smart-alternator installations, and on long cable runs where voltage drop is a problem.

Bluetooth setup and monitoring

Built-in Bluetooth lets you monitor, configure, and update the charger from the VictronConnect app, with an Instant Readout of charge state, voltages, warnings, and alarms right on the device list. (Note: this model has no VE.Direct port, so it's configured and monitored over Bluetooth rather than through a GX device, and the app does not display current in/out.)

Easy, scalable installation

A remote on/off input lets an ignition signal, BMS contact, or switch control the unit. Connections are screw terminals (up to 16 mm² / AWG 6) — no special tools — and an unlimited number of units can be paralleled to scale up output current. Every model is short-circuit proof and high-temperature protected (output reduces gracefully at high ambient), rated IP43 on the electronics with the screw terminals oriented downward.

Choosing your model

All four models are 360–400 W. Pick by input → output nominal voltage (12 or 24 V) and continuous output current: 12/12-30 A and 24/12-30 A deliver 30 A at 12 V; 12/24-15 A delivers 15 A at 24 V; 24/24-17 A delivers 17 A at 24 V. Input ranges are 8–17 V (12 V input) and 16–35 V (24 V input). Exact figures are on each variant below.

Why buy from Blue Marine

Blue Marine is an authorized Victron Energy dealer. Every Orion-Tr Smart ships brand-new with the full 5-year Victron warranty, free shipping, and local pickup available. Not sure whether you need isolated or non-isolated, or which current rating fits your alternator and bank? We rig Victron systems on real boats — ask us before you order.