Description
xVictron Orion-Tr Smart 24/12-20A (240W) Isolated DC-DC Charger
The Victron Orion-Tr Smart 24/12-20A is a galvanically isolated DC-DC battery charger designed to charge a 12V service battery from a 24V starter or house battery bank. It is aimed at professional installers working on vehicles, vessels and off-grid systems where electrical isolation between battery banks is a requirement, not an option.
Key Features
- Galvanic isolation between input and output eliminates ground loop issues and protects sensitive electronics on both battery banks.
- 240W continuous output at 20A on the 12V side, suitable for maintaining or charging a secondary battery bank from a 24V source.
- Built-in Bluetooth allows configuration and monitoring via the VictronConnect app on iOS and Android, without additional hardware.
- Two-wire engine detection senses alternator output and automatically switches between storage and absorption charge modes to protect the starter battery.
- Adaptive charging algorithm with configurable charge profiles to suit AGM, gel, lithium and other battery chemistries.
- Wide input voltage range handles real-world voltage fluctuations from alternators and solar-charged battery banks.
- Compact, wall-mountable enclosure with a weight of 1.3 kg, suited to installations with limited space.
Product Overview
The Orion-Tr Smart uses a DC-DC conversion stage with full galvanic isolation, meaning the input and output circuits share no common ground. This matters in dual-battery vehicle and marine installations where a shared ground can cause corrosion, interference or fault currents. The isolation also means the unit can be used to step voltage down from 24V to 12V while keeping the two battery systems electrically independent.
The two-wire engine detection input is a practical feature for alternator-based charging. When the alternator is running, the unit charges at the programmed absorption or bulk rate. When the engine stops, it drops to a lower storage voltage to avoid draining the starter battery. This behaviour is configurable via VictronConnect, where installers can also set charge voltages, absorption time and tail current to match the connected battery chemistry.
VictronConnect Bluetooth is built in, so there is no need for a separate dongle or interface. Installers can commission the unit, adjust parameters and check live data directly from a phone or tablet. The Orion-Tr Smart is also compatible with the Victron VE.Direct ecosystem for integration into larger monitoring setups where required.
Specifications
- SKU: ORI241224120
- Input voltage: 24V DC (nominal)
- Output voltage: 12V DC (nominal)
- Output current: 20A
- Output power: 240W
- Isolation: Galvanic (isolated DC-DC)
- Connectivity: Bluetooth (VictronConnect), two-wire engine detection
- Weight: 1.3 kg
- GTIN: 8719076046080
Applications
- Dual-battery systems in campervans, motorhomes and HGVs with a 24V chassis and a 12V leisure battery bank.
- Marine installations requiring galvanic isolation between the engine start battery and the service bank.
- Off-grid cabins and vehicles where a 24V primary bank feeds a 12V secondary system for lighting or accessories.
- Lithium battery upgrades where a controlled, chemistry-specific charge profile is needed for the secondary bank.
- Professional vehicle conversions where ground loop elimination is required to protect 12V electronics.
What Is Included
- 1 x Victron Orion-Tr Smart 24/12-20A (240W) Isolated DC-DC Charger
Installation Notes
Installation should be carried out by a qualified electrician or experienced installer familiar with DC battery systems. Correct cable sizing and fusing on both the input and output sides is essential at these current levels. For marine installations, follow applicable wiring standards and ensure the unit is mounted in a ventilated location away from direct water ingress. The two-wire engine detection input must be wired to a switched 24V supply that is live only when the engine is running. Lithium battery profiles should be confirmed against the battery manufacturer's specifications before commissioning.
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:
- Non-faulty items returned after 14 days and/or not in their original, undamaged packaging can only be exchanged for store credit - 15% off the items returned.
- 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.