Description
xOrion-Tr Smart 24/48-8.5A (400W) Isolated DC-DC Charger
The Victron Orion-Tr Smart 24/48-8.5A is a galvanically isolated DC-DC charger that converts a 24V supply to a 48V output at up to 8.5A (400W). It is designed for professional dual-battery and multi-voltage systems where electrical isolation between circuits is a requirement, not an option.
Key Features
- Galvanic isolation between input and output eliminates ground loop issues and protects sensitive electronics in dual-bus systems.
- Bluetooth built-in via VictronConnect allows configuration, monitoring and firmware updates without additional hardware.
- Input voltage range suited to 24V lead-acid and lithium battery banks, with adjustable input voltage thresholds to protect the source battery.
- Adaptive charging algorithm supports lithium (LiFePO4), AGM, gel and flooded battery chemistries on the output side.
- Engine-detection feature prevents the charger from drawing down the starter battery when the alternator is not running.
- Compact, wall-mountable enclosure rated for demanding installation environments.
- 400W continuous output power with high conversion efficiency, minimising heat generation in enclosed spaces.
Product Overview
The Orion-Tr Smart range uses galvanic isolation to keep the input and output circuits electrically separate. This matters in vehicles, vessels and off-grid systems where two battery banks share a chassis ground, because without isolation a direct DC-DC converter can create unwanted current paths that cause corrosion, interference or safety hazards. The isolation transformer inside this unit eliminates that risk entirely.
Configuration is handled through the VictronConnect app over Bluetooth. Installers can set the input voltage lockout threshold (to prevent the charger from flattening the source bank), select the correct charge profile for the output battery chemistry, and monitor real-time current, voltage and charge state. No additional interface hardware or proprietary dongles are required.
At 400W continuous, this unit is well suited to 24V-to-48V step-up applications in electric vehicles, marine dual-bank systems, and off-grid installations where a 24V generation or storage source needs to feed a 48V load or battery. The 8.5A output current is fixed by the converter topology, so system designers should verify this matches the charge acceptance rate of the target battery bank.
Technical Specifications
| Parameter | Value |
| SKU | ORI244840120 |
| Input Voltage (nominal) | 24V DC |
| Output Voltage (nominal) | 48V DC |
| Output Current | 8.5A |
| Continuous Output Power | 400W |
| Isolation | Galvanic (transformer-based) |
| Connectivity | Bluetooth (VictronConnect) |
| Weight | 1.8 kg |
| GTIN | 8719076065579 |
Applications
- Charging a 48V lithium or lead-acid service battery from a 24V alternator or starter battery bank in commercial vehicles.
- Marine dual-bank systems where galvanic isolation is required to prevent stray current corrosion.
- Off-grid installations stepping up from a 24V solar or battery source to a 48V battery or load bus.
- Electric vehicle auxiliary systems requiring isolated voltage conversion between bus voltages.
- Telecom and industrial DC power systems with mixed 24V and 48V distribution rails.
What Is Included
- Orion-Tr Smart 24/48-8.5A Isolated DC-DC Charger (ORI244840120)
Installation Notes
Installation should be carried out by a qualified electrician or experienced system integrator familiar with DC power systems. Ensure input and output wiring is correctly rated for the continuous current draw. Verify the source battery bank can sustain the load without falling below the configured input lockout voltage. For marine installations, follow NMEA and flag-state wiring standards. Configure the unit via VictronConnect before commissioning to set the correct battery chemistry and voltage thresholds for your application.
Return Policy
xWe offer a 14-day, no-quibble returns or replacement policy because we want you to be totally satisfied with your purchase.
If you are unhappy in any way with your purchase, you can return it for a refund or a replacement, as long as you return it in the same condition as it arrived (original/undamaged packaging and product) and within 30 days of receiving it. We will pay for your return postage on a faulty item as long as you send it using Royal Mail 2nd class recorded delivery (for EU or International Shipments, you have to use our UPS account, we will provide you with a return label)
Please keep in mind the following:
- Items returned within 14 days but not in their original and undamaged packaging will also incur a -15% charge per package.
- If you return an item that doesn't adhere to our returns procedure or doesn't include a returns form, you may be liable for a £10 administration fee
- Individual items from a bundle can't be returned, refunded or exchanged. If you want a refund/credit/exchange for a bundle, all items must be returned to us.
Before you return your item, please make sure that:
- You follow our returns process (outlined below)
- The goods and packaging are undamaged
IMPORTANT: We need to be able to identify an item with your order. We can only do this if you follow our returns process. Please do not send us items back that do not follow this process as they cannot be identified properly and will not be replaced or refunded.
What delivery method do I need to use when returning an item?
You must send the goods back to us via Royal Mail 2nd class recorded delivery. Refunds on faulty items returned are reimbursed within 5 working days.
Can I return just one item from multiple purchases?
Yes. Once you start the returns process you will go to a page that will allow you to choose which items you want to be replaced or refunded.
Returning faulty goods
If your item is faulty, you need to follow the returns policy, where you will be able to state that it’s faulty. The product will then arrive at our warehouse for testing.
If your purchase is not within 14 days
You can still exchange your item for a different product or for credit to use on the Voltacon Solar or Ledison-led-lights.co.uk websites (-15% from the credit amount).
Returns outside of the 14-day period do not qualify for the free returns policy.
Returning an item within the warranty
If you have a warranty and want to return a faulty item, you just need to follow our standard returns process. When we receive your item, we will then check that it’s within warranty and for any faults before arranging a replacement.