Victron Energy Orion XS Smart DC to DC Battery Charger 12/12 50A (700W) - IP65 Dust & Waterproof - Fully Configurable - Remote Management Possible - Advanced Battery Protection

This will be my second unit and now I’m replacing my last old Victron 12/12 30 amp in my camper conversion as well. Runs much cooler, super efficient. Some will complain that the prices is too high, but you get what you pay for. On top of that the Victron app is so easy to use and gives you a lot of useful data. When I started my cargo trailer camper conversion, I mostly purchased no name brands from China (which all mostly worked good, but nothing communicated and the apps just suck) and have since upgraded all of it to Victron spending much more money in the long run than I needed to. Take your time do your research and then my Victron.

Used to convert Dodge 3500 camper to lifepo4. Amazing the amount of control for volts and amps. Works great, can't imagine anything better. Moved batteries inside under rear pass bed and mounted there. Only using 40 w charging per batteries spec and it didn't get warm. Only used it one time on a short trip so far. Don't know why equipment manufacturers don't make connections a little larger. Tight fit using 6awg and octagon ferrule crimper. Nice and compact.

Work like a high powered dream. Recommend buying!Victron + SOK Battery System Charging Path NarrativeThis document describes the wiring layout and rationale for each major charging component in a custom power system installed in a Ford Transit 250 High Roof EcoBoost van. The system includes two SOK SK12V314PH LiFePO4 batteries, a Victron MultiPlus 12/3000, a Victron SmartSolar MPPT 100/30, two Victron Orion XS 12/12-50A DC-DC chargers, and a Cerbo GX for centralized control and monitoring.1. Alternator Charging Path (DC-DC via Orion XS 50A Chargers)Source: Ford Transit 250's factory 175A Customer Connection Point (CPP).Cable: 15 feet of 2/0 AWG marine-grade cable is used to carry alternator current from the CPP to a protection and distribution system.Breaker: A Blue Sea 120A breaker protects this main charging input, limiting current to protect wiring and components downstream.Bus Bar: From the breaker, 2/0 AWG marine-grade cable continues to a Blue Sea 250A rated positive bus bar.Orion Input Wiring: Two 4 AWG marine-grade wires run from the 250A bus bar to the input terminals of each Victron Orion XS 12/12-50A charger.Grounding: The Orion XS units are grounded using 4 AWG marine-grade wire to a common Blue Sea negative bus bar.Orion Output Wiring: Each Orion’s output is protected with an 80A Blue Sea breaker. From each breaker, 4 AWG marine-grade wire connects the Orion’s output to a second positive bus bar.Purpose: This setup ensures safe, controlled DC-DC charging from the van alternator to the house battery bank. The Orion XS units are managed via DVCC and Ve.Direct Connect to the Cerbo GX, and configured to only turn on when alternator voltage rises above the engine-on threshold, preventing van battery drain.2. Solar Charging Path (SmartSolar MPPT 100/30)Controller: Victron SmartSolar MPPT 100/30 connected to a solar array (not detailed here).Connection to System: The MPPT’s positive output wire connects to the same positive output bus bar used by the Orion chargers.Ground: MPPT negative output wire connects to the shared negative bus bar.Monitoring: MPPT is VE.Direct connected to the Cerbo GX, enabling DVCC and battery voltage/current telemetry.Purpose: Provides charging from solar independent of engine operation. Integrated into GX for full system coordination.3. Inverter/Charger Path (Victron MultiPlus 12/3000)Connection: The MultiPlus is wired directly to the main positive bus bar with 4/0 AWG marine-grade cable.Ground: The MultiPlus negative is wired to the main negative bus bar using 4/0 AWG marine-grade cable.30 Amp fused Shorpower link: Connected to the Inverter with 4/0 AWGDigital Multi-control: Connected to the Victon Cerbo GX with regular RJ45 allows inverter control from the cabinFunction: Provides both shore charging and AC inversion. Shore charging current is regulated via the Cerbo GX and DVCC in communication with the SOK BMS.Rationale: 4/0 AWG ensures low resistance paths for high current draw and charging currents.4. Battery Bank Wiring (SOK SK12V314PH Batteries)Configuration: Two SOK 314Ah LiFePO4 batteries connected in parallel.Wiring: Both batteries are connected to the positive bus bar with 4/0 AWG marine-grade cable. Similarly, both battery negatives are wired to the shared negative bus bar with 4/0 AWG.Monitoring: The SOK BMS communicates via CAN bus to the Cerbo GX, which centrally manages charge voltage and current limits across the system (Orions, MPPT, MultiPlus).5. Ventilation Fan Control (Temperature-Based)Fans: Two 12V DC fans are installed for compartment cooling.Control: Fans are triggered automatically using temperature relays configured in the Cerbo GX.Purpose: To protect sensitive components (batteries, inverter, DC-DC chargers) from heat buildup, especially during charging.This architecture prioritizes safety, alternator protection, smart BMS-based charging, and full integration with Victron GX for visibility and control. It balances high-capacity charging with efficient heat management and battery health longevity.

High quality, easy to set up, works as advertised.

This charger works excellent. I have it connected to my truck to my 5th wheel. It gives me 50 amps of charge power while I'm traveling. Victron never disappoints. Be sure to use 4ga wire depending on the length of your run.

Three wire installation is a snap, the jumper for the auto charge start/stop fell out and I will need to add something to keep it installed. This is a clever part and will charge large capacity Lithium battery such as 300 AH and protect the vehicle alternator from overheating.My motorhome has layers of circuits in the battery charge system. This charge regulator was smart enough to adapt to the slow system start and multiple relays delays. Hence my voltmeter often found odd voltages from the alternator output measured at the battery.I would have given it 5 stars if the charge circuit jumper hand a clamp to hold it in place.