About the Dyness LV-Link A Battery Expansion Communication Box
The Dyness LV-Link A Battery Expansion Communication Box is an auxiliary communication and expansion module designed by Dyness to seamlessly link compatible low-voltage battery units—such as the PowerBox Pro, PowerDepot H5B, DL5.0C, and B51100—into a larger, scalable energy storage system.
Detailed Features
- Compact & Lightweight in size:
- ideal for tight installations, can be wall mounted.
- Parallel Battery Expansion:
- Enables easy parallel connection of Dyness LV batteries to form a unified bank for extended backup or higher output.
- Battery Grouping & Management
- Master-Slave Coordination:
- Automatically assigns one battery as the “master” to manage communication across multiple modules, preventing data conflict and voltage mismatch.
- State of Charge (SOC) Balancing: Ensures all connected batteries remain synchronized in their charging and discharging cycles, improving system efficiency and lifespan.
- Error Monitoring & Reporting: Helps detect and isolate communication issues, battery imbalance, or hardware failures across the battery network.
- Master-Slave Coordination:
- Intelligent Communication Control:
- Multi-Protocol Support: Supports CAN and RS485 interfaces to work with a wide range of hybrid and off-grid inverters.
- Dynamic Address Allocation: Automatically recognizes each connected battery’s ID and configures communication hierarchies without manual setup.
- Plug-and-Play Communication:
- Auto Configuration: No advanced software required — plug the communication cables in sequence and the system recognizes the network.
- Firmware Upgradable: Some versions may allow remote firmware updates through the battery system or monitoring platform.
- Scalability & Flexibility:
- Supports 2 to 8 Batteries: Typically enables seamless parallel expansion of up to 4 clusters.
- System Flexibility: Enables mix-and-match support between Dyness models in the same voltage class (e.g., DL5.0C + B51100) when capacity and firmware allow.
- System Integration:
- EMS/Hybrid Inverter Compatibility: Works with energy management systems to share real-time battery data (SOC, voltage, temperature, etc.), optimizing performance.
- Cloud Integration (via battery/inverter): Some Dyness-compatible inverters allow remote monitoring via apps (e.g., Solarman, Dyness View) that utilize data from the LV-Link A box.
- Status Indicators:
- LED Diagnostics Panel: Front-facing LED indicators show real-time status for power, CAN communication, RS485 data flow, and fault alerts — helpful during installation or troubleshooting.
- Activity Light Feedback: Flashes based on communication frequency, giving live feedback to confirm successful syncing.
Technical Specifications
- Model: LV-Link A
- Operating Voltage: 42-60V
- Communication: CAN/RS485
- Operating Temperature: -20 ~ 55°C
- Storage Temperature: -10 ~ 35°C
- Relative Humidity: 5% ~ 85%RH
- Protection Class: IP20
- Installation Method: Wall-mounted
- Max Altitude: 4 000m
- Certification & Safety: CE-EMC
- Compatible Battery: *see datasheet*
Applications of the Dyness LV-Link A Battery Expansion Communication Box
- Home & Commercial Energy Storage:
- Ideal for modular systems where multiple Dyness batteries (e.g. DL5.0C, B51100, PowerBox Pro/H5B) need to be paralleled to scale capacity or redundancy efficiently.
- Off‑Grid & Backup Power:
- Enables long-term autonomy or mission-critical backup by linking several battery units into a unified system.
- Space-Constrained Installations:
- Compactness makes it suitable for cabinets, racks, or wall-mounted deployments with limited space.
The Dyness LV‑Link A is a small but critical component for expanding and synchronising Dyness LV-format battery modules, ensuring cohesive operation, ease of installation, and future-ready scalability for residential or commercial energy storage systems.
