Configure multiple SmartSolar controllers – How to do it with VE.Smart network

Step-by-step guide to configuring multiple SmartSolar controllers in a VE.Smart network for synchronized charging of solar chargers and battery bank.

There are many situations where it is advantageous to use multiple SmartSolar controllers to charge the same battery bank. By connecting them in a VE.Smart network, you can make them work as a single large charger. Here we go through how it works, when it is needed, and how to configure the system step by step.

Why use VE.Smart network?

When you connect multiple SmartSolar charge controllers in a VE.Smart network, the charging algorithm is automatically synchronized. The chargers switch simultaneously between charging stages, for example, from bulk to absorption, without additional hardware. This provides a smoother and more efficient charge.

How does synchronization work?

The chargers select a master that controls the charging algorithm. The master ensures that all chargers have the same voltage setpoint and charging status. Important: battery settings must be identical on all chargers. However, the current is regulated individually by each charger depending on the PV array, cable resistance, and max setting.

At the beginning of the day, the master measures the battery's idle voltage before charging starts. This information is used to calculate absorption time and is shared with the other chargers. If the master is disconnected (e.g., the sun goes down), the algorithm can be resumed by the other chargers.

When is synchronization not necessary?

There are systems where synchronization is not needed, for example:

1. ESS systems with managed batteries (CAN bus).
2. ESS systems with unmanaged batteries where the inverter controls the chargers.
3. Systems where the battery's BMS already controls the charging.

Step-by-step: Configure VE.Smart network

1. Set up Smart Battery Sense or BMV
Open VictronConnect, connect the device, and go to Settings → VE.Smart Networking. Click on Create network, enter a name, and save.

2. Connect SmartSolar chargers
Go to Solar charger → Settings → VE.Smart Networking → Join Existing. Select the network you created.

3. Verify operation
Check that the VE.Smart Networking page shows data and that the network icon is visible on the main page.

Tips for best results

• Ensure all chargers have the same battery settings.
• Use Smart Battery Sense for accurate temperature and voltage compensation.
• If current limiting is needed – use a GX device with DVCC.

Read more in the Smart Battery Sense manual.