Victron DC-DC battery charger booster Orion XS 12/12-50A, top view.

DC-DC converter charger Victron Orion XS 12-12 50A

Name: DC-DC converter charger Victron Orion XS 12-12 50A
Brand: Victron energy
SKU: ORI121217050
Price: 274.66 EUR
Availability: InStock
Rating: 5 (2 reviews)

€274.66

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Dimensions: 137.3 × 123.1 × 40 mm (height × width × depth).

Victron Orion XS 12/12-50A: 12 V to 12 V DC-DC booster charger, adjustable from 1 to 50 A. Bluetooth, VictronConnect, VE.Direct, IP65 and fanless cooling. Charges a campervan, motorhome or boat auxiliary battery from the alternator, with the correct profile for LiFePO4, AGM, gel or lead-acid batteries. Reference: ORI121217050.

Charging technologies: Flooded lead-acid, AGM, gel and LiFePO4; select the appropriate charging profile.

EAN/GTIN: 8719076058519

Victron Orion XS 12/12-50A: 50A DC-DC battery charger and booster

The Victron Orion XS 50A, model Orion XS 12/12-50A, reference ORI121217050, uses alternator power to recharge your service battery while travelling. This 12 V to 12 V DC-DC charger regulates current and voltage in dual-battery systems. Its compact housing, Bluetooth and fanless cooling make it suitable for campervans, motorhomes, work vehicles and boats.

Compatible battery technologies

Supports the following rechargeable battery technologies, provided that the bank voltage matches the charger output and the battery capacity and permitted charging current are respected.

Technology	Compatibility and settings
Conventional flooded lead-acid / WET	Compatible with the lead-acid programme specified by the battery manufacturer.
AGM / VRLA	Compatible. Use the absorption and float voltages recommended for the battery; AGM batteries do not all require the same settings.
Gel / VRLA	Compatible with the correct gel profile and voltage limits. Avoid overvoltage and reconditioning unless authorised by the battery manufacturer.
LiFePO4 lithium	Compatible with the lithium/LiFePO4 profile and a suitable BMS. Do not use lead-acid equalisation or reconditioning.

Set the unit to charger mode and select or customise the battery profile in VictronConnect. Power supply mode does not replace a correctly configured charging profile.

Not intended for non-rechargeable cells, NiMH or Ni-Cd batteries. Chemical compatibility does not mean that every capacity or voltage is suitable. For LiFePO4, also observe charging temperature limits and BMS protections.

Looking for a Victron 12 V 50 A charger or a Victron 50A booster?

The Orion XS 12/12-50A meets both needs: it is a DC-DC battery charger, also called a booster, for controlled auxiliary-battery charging from a 12 V starter system. Reference ORI121217050 identifies the exact unit. It is neither a 230 V mains charger nor a portable jump starter.

Auxiliary charging for your journeys

In a campervan or motorhome, recharge the service battery while driving so it can later power compatible lighting, refrigeration and other equipment. In marine systems, it can manage service-bank charging from the starter circuit where a non-isolated charger is appropriate. In work vehicles, it helps manage auxiliary charging separately from engine-starting loads.

What it adds compared with connecting batteries directly

It controls auxiliary-battery charging rather than simply connecting it to the starter battery. Adapt the profile for LiFePO4, AGM, gel or lead-acid and limit the load on the alternator. Engine-running detection helps prevent starter-battery discharge; some Euro 6 vehicles require adjusted settings or an external signal, as explained in the manual.

Technical data for choosing your charger

Model / catalogue reference	Orion XS 12/12-50A / ORI121217050
Adjustable input / output voltage	9–17 V DC / 10–17 V DC
Adjustable input and output current	1–50 A; fine adjustment in 0.1 A steps
Rated power	700 W at 14 V and 50 A; 600 W at 12 V and 50 A
Maximum efficiency	98.5 %
No-load / standby current	<100 mA / <1.5 mA
Output tolerance / ripple	±0.25 % / 10 mV RMS
Operating temperature	−20 to +60 °C; output derating of 1.5% per °C above 40 °C
Protection / net weight	IP65 / 0.330 kg
Dimensions, height × width × depth	137.3 × 123.1 × 40 mm
DC connection	Screw terminals; specified maximum: 4 AWG (21.2 mm²)

Continuous output assumes adequate cooling. The adjustable 50 A maximum is not a charging current suitable for every battery.

Bluetooth, VE.Smart and system control

VictronConnect lets you configure and update the charger and check its operation. Bluetooth provides local access; Internet monitoring requires a GX device connected through VE.Direct and access to VRM. VE.Smart can receive data from compatible battery sensors, but does not synchronise charging between Orion XS units.

DVCC requires Orion XS firmware v1.03 and Venus OS v3.20 or later, together with compatible GX and BMS connections. The charger does not contain a battery BMS or replace a battery monitor's state-of-charge measurement.

Emergency reverse charging: an additional feature with conditions

With Orion XS firmware v1.15 and VictronConnect v6.43 or later, energy can be transferred from the auxiliary battery to the starter battery. The maximum is 25 A, subject to configured limits. The sequence includes 15 minutes of charging followed by 5 minutes of stabilisation. It is not an instant jump starter and cannot guarantee recovery of a faulty battery.

Compatibility and installation

Choose the XS50 when both circuits are 12 V and the battery, BMS, alternator and wiring support the selected current. It has no galvanic isolation: where the project requires electrical separation between input and output, consider an isolated alternative.

The manual specifies vertical mounting with terminals facing down, a non-flammable mounting surface and at least 10 cm clearance around the unit. Size cables, fuses and tightening torques for the cable length and installation conditions. IP65 does not mean suitable for immersion.

The configurable lithium low-temperature cut-off requires battery-temperature data shared by compatible equipment. Do not assume the Orion itself knows the battery's internal temperature. Where a BMS controls charging, its control conditions apply.

Questions before buying

Can it charge a 100 or 200 Ah lithium battery? Yes, if voltage, charging profile and permitted current are suitable; capacity in Ah alone does not determine compatibility.

Does it replace a solar controller? No. It charges from another DC system; solar panels require their own controller.

Can several units increase charging capacity? Yes, with a correctly sized parallel installation. This is not the same as synchronised charging through VE.Smart.

What is included? The manual lists the charger and remote on/off terminal block. Check the required wiring and accessories separately.

Compare and complete your installation

For more current in a 12 V circuit, compare the Orion XS 70A; for 12/24 V systems, see the Orion XS 1400. Explore LiFePO4 batteries, battery monitors and other DC-DC booster chargers. Read the official XS50 manual before installation.

Documentation: official datasheet PDF, dimensional drawings in the manufacturer's download centre.

Orion XS or Orion-Tr Smart: compare before buying

Model	System and current	Selection criteria
Orion XS 12/12-50A	12 → 12 V, up to 50 A	IP65 and fanless cooling.
Orion XS 12/12-70A 1000W	12 → 12 V, up to 70 A	IP20, two fans and a dry indoor installation.
Orion XS 1400 50A	12/24 V systems, up to 50 A	1,400 W rated at 28 V; IP65 and natural convection.
Orion-Tr Smart 12/12-30A isolated	12 → 12 V, 30 A	An alternative where galvanic isolation is required.

Orion XS chargers do not provide galvanic isolation. Choose according to voltage, permitted charging current, installation environment and electrical design, not just the type of vehicle.