You have a Victron MultiPlus, a SmartSolar MPPT, and a SmartShunt$8,000 of blue boxes operating independently. They do not communicate. They do not coordinate. None of them can call your phone when the battery hits 10% at 3am in January. The cerbo gx vs ekrano gx decision is the question of which brain you put in charge of all of it. Start by understanding how much solar power you actually need so your system is sized correctly before the GX device goes in. This article focuses on the comparison the full Cerbo GX feature breakdown is in our Victron Cerbo GX guide.
I was on a Norwegian cruise between Nassau and Cozumel in January when VRM sent an alert to my phone. A client’s Rockwood cabin battery at 18% SoC. Outside -22°C. Propane tank at 12%. Standing on the pool deck I called the client. He drove up from Guelph that afternoon. Pipes were fine. The GX device made the system smart enough to ask for help from 3,000 kilometres away. That is what you are buying.
Cerbo GX vs Ekrano GX: The One-Line Summary
Before the detail the one-line summary:
- Cerbo GX: Modular workhorse. Dual-core processor. Brain lives in the cabinet. Separate GX Touch screen mounts wherever you need it. Best when brain and screen need to be in different locations.
- Ekrano GX: All-in-one flagship. Quad-core processor. Built-in 7-inch screen. Two fully isolated VE.Can ports. The 2026 standard for new high-end builds.
Both run the same Venus OS. Both connect to VRM. Both support DVCC, generator auto-start, relay automation, and tank monitoring. The difference is form factor, processing power, and CAN port configuration.
What a GX Device Actually Does – For Those Starting From Zero
The flying blind problem: Without a GX device your Victron components operate independently. Your MPPT makes charging decisions based on what it measures at its own terminals. Your MultiPlus makes inverter decisions based on what it measures. Your SmartShunt monitors the battery. None of them share data. None of them coordinate. None of them can alert you when something goes wrong at -22°C.
What the GX device adds: A GX device connects to every component via VE.Direct, VE.Bus, and VE.Can collecting all their data into one unified system. It enables DVCC so every charger works from the same accurate battery voltage. It sends VRM alerts to your phone. It auto-starts the generator. It triggers relay-controlled battery heaters. It monitors tank levels and temperatures. Full details on all these features in our VRM Portal guide.
The plane dashboard analogy: Flying without a GX device is flying without instruments. Your engine is running. Your fuel level is unknown. Your altitude is a guess. A GX device is the instrument panel that turns a collection of capable components into a coordinated system you can trust with your survival.
The Cerbo GX – The Modular Workhorse
What it is: The Victron Cerbo GX is a compact Linux-based communication centre dual-core processor, four VE.Direct ports, one VE.Bus port, one VE.Can port, one BMS-Can port, WiFi, Ethernet, Bluetooth, and two programmable relay outputs. The brain lives in the equipment room. The display GX Touch 50 or 70 mounts separately wherever you want it connected by a single cable.
Why the modular approach matters: In a Rockwood cabin the equipment room is typically unheated a utility space where the battery bank, inverter, and charge controllers live. The kitchen or living room is where you actually want to see system data. The Cerbo GX’s modular design lets you put the brain where the equipment is and the screen where you live. One cable run through the wall. Clean and practical.
The Cerbo GX limitations:
- Dual-core processor adequate for most residential systems but can lag on very large installations with 20+ connected devices
- One VE.Can port plus one limited BMS-Can port not two fully isolated VE.Can ports
- Separate GX Touch screen required for local display additional cost of $200-325
Best for:
- Installations where the equipment room and living area are separated
- Standard residential builds MultiPlus, one or two MPPTs, SmartShunt, standard lithium batteries
- Budget-conscious builds where Touch 50 provides adequate display
- Existing installations already built around the Cerbo GX ecosystem
The Ekrano GX – The All-In-One Flagship
What it is: The Victron Ekrano GX is Victron’s most powerful GX device quad-core processor, built-in 7-inch waterproof touchscreen at 1024×600 resolution, four VE.Direct ports, one VE.Bus port, two fully isolated VE.Can ports, WiFi, Ethernet, Bluetooth, and two programmable relay outputs. Brain and screen in one flush-mounted unit. The successor to the now-discontinued Color Control GX.
The dual isolated VE.Can advantage – the detail that matters in a blizzard: This is the technical detail completely absent from every cerbo gx vs ekrano gx guide.
The Cerbo GX has one VE.Can port and one BMS-Can port. The BMS-Can port is a limited implementation it handles basic battery communication but lacks the full feature set of a proper VE.Can port.
The Ekrano GX has two fully isolated VE.Can ports. For off-grid systems running managed lithium batteries Pylontech, EG4, BYD, Gobel this isolation is critical. A managed battery communicates its cell voltages, temperature, and charge/discharge limits to the GX device via CAN bus. When the CAN bus connection is non-isolated interference between devices can cause communication errors. A communication error between the GX device and the battery BMS during a January blizzard can trigger the BMS to shut down battery discharge leaving you without power at -22°C. The Ekrano’s dual isolated VE.Can ports eliminate this failure mode entirely.
The quad-core processor difference: The Cerbo GX’s dual-core processor handles most residential systems without issue. The Ekrano GX’s quad-core processor becomes meaningful in large systems 6+ MPPT controllers, multiple inverters, managed battery banks, tank sensors, temperature sensors, generator monitoring all simultaneously. On a heavily loaded Cerbo occasional update lag appears. The Ekrano handles the same load without hesitation.
Best for:
- New builds where screen and brain can be co-located in one flush-mounted unit
- Systems running managed lithium batteries requiring isolated CAN communication
- Large complex systems where quad-core processing matters
- Builders who want the cleanest possible single-unit professional installation
The Generator Auto-Start – The Feature That Saves the 2am Walk
What it does: Both the Cerbo GX and Ekrano GX automatically start a backup generator when the battery bank drops below a configured SoC threshold typically 20-25%. When the generator starts the GX device monitors the charge cycle and stops the generator automatically when the battery reaches target SoC.
The Ontario 2am scenario: Battery bank hits 20% SoC at 2am on a -25°C February night. Without auto-start you wake up to an alarm, put on boots and a coat, walk to the shed, pull the generator start cord, walk back inside. With auto-start the GX device starts the generator, charges the battery to 80%, stops the generator, and logs the event in VRM all while you sleep.
Configuration: Navigate to Settings Generator start/stop set start condition (SoC below 20%), stop condition (SoC above 80%), quiet hours (no auto-start between 10pm and 7am if noise is a concern), minimum run time (30 minutes to avoid short cycling). Done. The system manages itself.
The Quick Comparison Guide
| Feature | Cerbo GX | Ekrano GX |
|---|---|---|
| Processor | Dual-core | Quad-core |
| Built-in display | No separate GX Touch | Yes – 7-inch built-in |
| VE.Can ports | 1 VE.Can + 1 BMS-Can | 2 fully isolated VE.Can |
| VE.Direct ports | 4 | 4 |
| VE.Bus port | 1 | 1 |
| Mounting | Cabinet or DIN rail | Flush panel or blind hole |
| Cost | ~$350-400 + GX Touch | ~$550-650 all-in |
| Best for | Separated brain/screen installs | All-in-one clean builds |
| Managed battery CAN | Adequate | Excellent isolated |
| Large system performance | Good | Excellent |
Should I Buy the Cerbo GX or Ekrano GX? The Checklist
Choose the Cerbo GX if:
- ☐ Your equipment room and living area are separated you need the screen in a different location from the brain
- ☐ Your system is a standard residential build MultiPlus, 1-2 MPPTs, SmartShunt, standard lithium batteries
- ☐ You already have a GX Touch 50 or 70
- ☐ Budget is a consideration Cerbo GX plus Touch 50 is less than Ekrano GX
Choose the Ekrano GX if:
- ☐ You are building a new system and want screen and brain in one flush-mounted unit
- ☐ You run managed lithium batteries Pylontech, EG4, BYD requiring isolated CAN communication
- ☐ Your system has 6+ connected devices and you want quad-core processor headroom
- ☐ You want the cleanest single-unit professional installation
- ☐ You are building for the long term the Ekrano GX is Victron’s current flagship
Pro Tip: If you already own a Cerbo GX do not feel pressure to upgrade to an Ekrano GX unless you are adding managed lithium batteries that require isolated VE.Can communication or building a system large enough to tax the dual-core processor. The Cerbo GX handles the vast majority of residential off-grid systems in Ontario perfectly. The Ekrano GX is the right choice for new builds and complex managed battery systems not a mandatory upgrade for existing Cerbo GX installations that are working well.
The Verdict
The cerbo gx vs ekrano gx decision is simpler than it appears. Both devices do the same job. The difference is how they do it and what edge cases they handle better.
New build, managed batteries, clean single-unit installation Ekrano GX. Existing installation, separated brain and screen, standard lithium Cerbo GX.
Either way get a GX device. Flying your off-grid system without one is flying without instruments. The day the battery hits 10% at 3am in January you will want something smart enough to wake you up or better yet start the generator while you sleep.
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