Is the Wiren U5 Compatible with EG4?

Yes.

The Wiren U5 is designed for 48V residential energy storage systems and supports communication with compatible EG4 inverter models using industry-standard CAN and RS485 protocols.

When properly configured, the inverter can automatically:

• Read battery SOC accurately
• Control charging voltage
• Adjust charging current
• Prevent overcharge and over-discharge
• Display battery status directly on the inverter screen

This creates a true closed-loop energy storage system.

Benefits of Pairing Wiren U5 with an EG4 Inverter

Using compatible communication between the battery and inverter provides several advantages.

Accurate State of Charge

Without communication, SOC is estimated mainly from voltage, which becomes less accurate with LiFePO4 batteries.

With CAN communication, the inverter receives real battery data directly from the BMS.

Intelligent Charging Control

The inverter can automatically follow battery charging limits.

Benefits include:

• Reduced battery stress
• Improved charging efficiency
• Better long-term battery health

Improved System Protection

If the battery detects abnormal conditions such as:

• High temperature
• Low temperature
• Over-current
• Cell imbalance

the BMS can communicate these conditions to the inverter, allowing the system to respond appropriately.

Easier System Monitoring

Users can monitor important battery information, including:

• SOC
• Battery voltage
• Current
• Battery temperature
• Battery alarms

without relying solely on battery LEDs.

Communication Guide

1. Install the batteries and make each batteries communicate with each other. 

2. Connect battery-inverter communication cable, CAN/RS485. CAN is recommended. 

3. Select Para Setting on the first battery display.

4. Choose CAN Protocol

5. Choose Luxpower, all done

Check the installation video: waiting to upgrade

Check battery parameter: https://www.wirenergy.net/hess/

Buy the battery: https://signaturesolar.com/wiren-server-rack-battery-48v-100ah-u5/