Setting up DVCC on a Victron GX device for use with a Roamer SMART4 battery
Victron’s DVCC (Distributed Voltage and Current Control) is a powerful feature that intelligently manages charge and discharge limits across your Victron system, helping to optimise performance, protect your batteries, and ensure reliable operation - especially in systems with SMART4 or HOME batteries, or multiple charging sources. It acts as a central hub for system wide battery control. In the guide below, we’ll walk you through how to get DVCC set up correctly, so you can take full advantage of its features.
Before you start
Make sure you have the following:
Victron GX Device (Cerbo/Ekrano etc)
Roamer SMART4 or HOME batteries connected via CANbus (click to see how to connect and set this up first)
Touchscreen control of Victron GX device, or access via VRM Remote Console
Your system's connected chargers must be setup correctly for standalone operation before using DVCC - this is a safety measure in case of loss of communicaton and subsequent system reset, leading to the internal charge algorithm being used.
Do not proceed if your chargers are not already correctly configured.
Where do I find the settings?
Within VRM, go to the side menu of your installation and select "Remote Console".
If you are physically local to the installation, and have a touchscreen attached, you can skip this step.
You should be greeted with a console, which displays the system power.
Go to Settings > System Setup > Charge Control to get to the DVCC parameters.
Apply the following settings:
We recommend a maximum charge current of no more than 100A per battery in your system, to avoid excessive heat buildup at the battery terminals whilst charging for long periods. If your battery has a lower recommended charge current than 100A, please use that value instead.
Your Maximum charge voltage should be set to the charge voltage of your battery.
This may be lowered by 0.2-0.4V if the battery displays any cell high voltage alarms.
This is common to see on new installations - this is sometimes as a result of the "cell max (charge to) voltage" voltage within the BMS being interpreted as the "cell high voltage" by the Victron GX device. We are woking on addressing this via software.
All done, DVCC is now set up.
If you disable DVCC or turn off the batteries in the future, you may see errors - you will need to reset the external control for any MPPTs, and restart the VE.Bus system on any MultiPlus units. This can be done via the GX device console.
For any help or support, contact Roamer: support@roamer.com