Description
xVictron Orion-Tr Smart 24/48-8.5A (400W) Isolated DC-DC Charger
The Orion-Tr Smart 24/48-8.5A is a galvanically isolated DC-DC charger that converts a 24V supply to a 48V charging output at up to 8.5A and 400W. It is designed for professional dual-battery and multi-voltage DC systems where electrical isolation between source and load is a hard requirement. Bluetooth configuration and monitoring are built in, with no additional hardware needed.
Key Features
- Galvanic isolation between input and output eliminates ground loop issues and protects sensitive loads from input-side faults.
- 400W continuous output power with an 8.5A charge current at 48V nominal output.
- Input voltage range of 24V nominal, with a wide acceptance window suitable for real-world battery and alternator voltage variation.
- Built-in Bluetooth connectivity allows configuration and live monitoring via the VictronConnect app on iOS and Android, with no dongle required.
- Adaptive charging algorithm supports lithium (LiFePO4) and lead-acid battery chemistries, with configurable charge profiles.
- Engine detection function prevents excessive discharge of the starter battery by monitoring input voltage and only charging when the alternator is running.
- Remote on/off control via a dedicated terminal, suitable for integration with battery management systems and external switching.
- Compact, fully enclosed aluminium housing rated for permanent installation in vehicles, vessels and off-grid enclosures.
Product Overview
The Orion-Tr Smart series uses a high-frequency transformer to provide full galvanic isolation between the DC input and output. This is particularly important in marine and vehicle installations where chassis grounds from two separate battery banks must not be connected, and where ground loops can cause corrosion, interference or damage to electronics. The isolation also means the unit can be used to step voltage up from a 24V source bank to charge a separate 48V service or traction battery without any shared ground path.
Configuration is handled entirely through the VictronConnect app over Bluetooth. Charge voltage, absorption time, float voltage and tail current can all be adjusted to match the target battery chemistry. The engine detection feature uses input voltage thresholds to determine whether the vehicle or vessel alternator is active, preventing the unit from drawing down the starter battery when the engine is off. This makes it suitable for split-charge applications where protecting the cranking battery is essential.
At 400W continuous, this unit is well suited to applications where a moderate charge current is needed between two voltage domains, such as charging a 48V lithium house bank from a 24V alternator system, or maintaining a 48V auxiliary battery from a 24V primary supply. The unit can be paralleled with additional Orion-Tr Smart units if higher charge currents are required.
Technical Specifications
| Parameter | Value |
| SKU | ORI244840120 |
| Input Voltage (Nominal) | 24V DC |
| Output Voltage (Nominal) | 48V DC |
| Maximum Output Current | 8.5A |
| Continuous Output Power | 400W |
| Galvanic Isolation | Yes |
| Bluetooth | Built-in (VictronConnect) |
| Remote On/Off | Yes |
| Weight | 1.8 kg |
| GTIN | 8719076065579 |
Applications
- Charging a 48V lithium or lead-acid house battery from a 24V alternator or starter battery bank on commercial vehicles and HGVs.
- Marine dual-battery systems where galvanic isolation is required to prevent corrosion and ground loop interference.
- Off-grid and mobile installations with mixed-voltage DC architectures requiring isolated voltage conversion.
- Motorhome and coach builds where a 48V auxiliary system is fed from a 24V chassis electrical system.
- Industrial and telecoms backup systems requiring isolated DC-DC conversion between voltage domains.
What Is Included
- 1x Victron Orion-Tr Smart 24/48-8.5A (400W) Isolated DC-DC Charger
Installation Notes
Installation should be carried out by a qualified electrician or experienced DC systems installer. Correct fusing of both the input and output cables is essential and must comply with the current ratings of the wiring used. In marine applications, installation must conform to the relevant standards for the vessel type. The remote on/off terminal and engine detection function should be configured via VictronConnect before commissioning to ensure the source battery is protected. Do not install in locations exposed to direct water ingress unless the enclosure provides adequate protection.
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.