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Victron Orion-Tr Smart 24/24-17A — 400W Isolated DC-DC Charger
ORI242440120
A fully isolated 24V-to-24V DC-DC charger that lifts a 24V auxiliary battery back to full state from a 24V vehicle alternator. Delivers up to 17A continuous and 400W through a three-stage adaptive algorithm with AGM, gel, flooded and lithium profiles…
$359.95
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A fully isolated 24V-to-24V DC-DC charger that lifts a 24V auxiliary battery back to full state from a 24V vehicle alternator. Delivers up to 17A continuous and 400W through a three-stage adaptive algorithm with AGM, gel, flooded and lithium profiles ready to pick in the VictronConnect app. Fits trucks, buses, 24V 4WDs, coach-chassis motorhomes and 24V boat helms where the house bank needs to stay separate from the start battery.
Galvanic isolation between input and output rated to 200V DC keeps a ground loop from forming between vehicle chassis and auxiliary bank. The housing is 130 H × 186 W × 70 D mm at around 1.9 kg, with screw terminals for input, output and remote on/off, plus a Bluetooth radio for VictronConnect. Peak efficiency sits at 89 percent and off-load draw stays under 80 mA, so standby losses stay low.
This unit is 24V input to 24V output only, so do not wire it into a 12V alternator feed. Protect both input and output cables with correctly sized DC fuses at the batteries, and mount it with the terminals facing down to earn the IP43 splash rating. Pair it with VictronConnect on a phone or a GX device for live monitoring.
What sets it apart
True galvanic isolation — 200V DC separation prevents ground loops between vehicle and house bank.
Adaptive 3-stage charging — bulk, absorption and float matched to chemistry, with absorption time scaled from bulk time.
Smart Bluetooth setup — profiles, voltages, alarms and firmware updates through VictronConnect.
Engine running detection — only charges when the alternator is spinning, protecting the start battery.
Parallel capable — stack units for higher current when one unit is not enough.
Mounting and install
Mount vertically with the terminals facing down so the IP43 rating holds in a workshop or utility bay. Keep 100 mm of airflow above and below. Input cable from the alternator or start battery and output cable to the auxiliary bank both need to be sized for 25A peak and fused at both ends close to the batteries. Terminals accept up to 10 mm² ferrules.
The remote on/off terminal pair can be jumpered for always-on, wired to the ignition for engine-only charging, or driven from a battery monitor relay. VictronConnect over Bluetooth sets the chemistry profile, absorption voltage and float voltage before the first run.
- True galvanic isolation — 200V DC separation prevents ground loops
- Adaptive 3-stage charging — bulk, absorption, float matched to chemistry
- Smart Bluetooth setup — profiles, voltages and alarms via VictronConnect
- Engine running detection — only charges while the alternator spins
- Remote on/off terminals — wire a dash switch, ignition or BMS signal
- Pre-set battery profiles — AGM, gel, flooded, lithium ready to pick
- Parallel capable — stack units for higher output current
- IP43 rated — dust and splash resistant mounted terminals-down
Electrical
Nominal input | 24V DC
Input range | 16-35V DC
Nominal output | 24V DC
Output range | 20-30V DC
Charge current | 17A continuous
Output power | 400W
Efficiency | 89% peak
Isolation | 200V DC galvanic
Off-load draw | <80 mA
Charging
Stages | 3-stage adaptive
Chemistry profiles | AGM, Gel, Flooded, Lithium
Engine detection | D+ signal input
Remote control | On/off + Bluetooth
Environment and build
Operating temp | -20°C to +55°C
Humidity | 95% non-condensing
Protection | IP43
Parallel | Unlimited
Monitoring | VictronConnect Bluetooth
