Techfine Wall-Mounted LiFePO4 Battery Pack User Manual

1. Introduction

This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Techfine Wall-Mounted LiFePO4 Battery Pack. Designed for solar energy systems, this battery pack offers high-efficiency and robust energy storage. Please read this manual thoroughly before using the product and keep it for future reference.

2. Setup and Installation

The Techfine Wall-Mounted LiFePO4 Battery Pack is designed for wall-mounted installation. Ensure the installation location is suitable for the battery's dimensions and weight, and provides adequate ventilation.

2.1. Product Dimensions

2.2. Connection Diagram

The battery pack integrates seamlessly into solar energy systems. Below is a typical connection diagram illustrating how the battery connects with a solar panel, hybrid solar inverter, utility grid, and generator to power various loads.

2.3. Inverter Compatibility

The built-in Battery Management System (BMS) ensures broad compatibility with most major hybrid inverter brands. This includes, but is not limited to:

• Victron Energy
• Pylontech
• Deye
• SMA
• Growatt
• Goodwe
• Voltronic Power
• PCHNE
• Sofar Solar
• MEGAREVO
• TBB
• Bluesun
• Solis
• INVT
• LUXPOWERTEK

3. Operating Instructions

The battery pack features intuitive controls and indicators for easy monitoring and management.

3.1. Controls and Indicators

The unit is equipped with:

• LCD Display: Shows real-time operational data such as voltage, current, and temperature. Navigation buttons (MENU, ENTER, DOWN, ESC) allow interaction with the display.
• LED Light Strips: Provide intuitive power monitoring at a glance.
• ON/OFF Switch: Main power control for the battery unit.
• RESET Button: Used for resetting the system in case of an error or for specific maintenance procedures.
• ADD Button: For expanding the system with additional battery units.
• Battery Output: Clearly marked positive (+) and negative (-) terminals for connecting to the inverter. An integrated air switch provides additional safety.

3.2. Communication Interfaces

The battery pack supports various communication protocols for seamless integration and monitoring:

• RS232: For local communication and data exchange.
• RS485 (RS485-1, RS485-2, RS485-3): Multiple ports for robust communication in complex systems.
• CAN: Controller Area Network for high-speed data exchange with compatible devices.
• DRY CONTACT: For external control signals.

3.3. Parallel Capacity

The system supports parallel connection of up to 15 units, allowing for scalable energy storage solutions to meet varying power demands.

4. Maintenance

Regular maintenance ensures the longevity and optimal performance of your battery pack.

• Cleaning: Keep the battery unit clean and free from dust and debris. Use a dry, soft cloth for cleaning.
• Temperature Control: Ensure the operating environment maintains temperatures within the specified range (Discharging: -10°C to +50°C; Charging: 0°C to +60°C).
• Storage: If storing the battery for extended periods, ensure the storage temperature is appropriate (1 month: 0–35°C; ≤1 month: -20–45°C).
• Firmware Updates: Periodically check for and apply any available firmware updates for the BMS to ensure optimal performance and compatibility.

5. Troubleshooting and Safety Features

The Techfine battery pack is equipped with a comprehensive Battery Management System (BMS) that provides multiple layers of protection to ensure safe and reliable operation.

5.1. Protection Mechanisms

• Overcharge Protection: Prevents damage from excessive charging voltage.
• Over-discharge Protection: Protects the battery from being discharged too deeply, extending its lifespan.
• Short Circuit Protection: Automatically activates to prevent damage from short circuits. The system automatically releases this protection when charging.
• Over-current Protection: Alarms at >105A and protects at >110A/1S (Long Delay Overcurrent Prot.). Instant Overcurrent Protection activates at ≥150A/100ms.
• High Temperature Protection: Monitors and protects against overheating of the battery cells and MOS components.
• Charge Overcurrent Release: Discharging current >1A will release the charge overcurrent protection.
• Discharge Overcurrent Release: Charging current >1A will release the discharge overcurrent protection.

5.2. General Troubleshooting

• No Power: Check the ON/OFF switch and ensure all connections are secure. Verify the input power from the solar array or grid.
• Error on LCD: Refer to the specific error code displayed on the LCD screen. If the issue persists after basic checks, use the RESET button.
• Reduced Performance: Ensure the battery is operating within its optimal temperature range. Check for any obstructions to ventilation.

6. Specifications

Detailed technical specifications for the Techfine Wall-Mounted LiFePO4 Battery Pack.

7. User Tips

• Monitor Regularly: Utilize the LCD display to regularly check battery status, voltage, and current to ensure optimal performance.
• Proper Ventilation: Always ensure the battery installation area has adequate ventilation to prevent overheating and maintain efficiency.
• System Expansion: If expanding your system, ensure all additional battery units are compatible and follow the manufacturer's guidelines for parallel connection using the ADD button and communication interfaces.

8. Warranty and Support

8.1. Warranty Information

The Techfine Wall-Mounted LiFePO4 Battery Pack comes with a 5-year warranty. Techfine provides 1-2 years warranty and 1% spare parts for free. In case of issues, Techfine will repair the PCB or provide a new one.

8.2. Certifications

Our products meet high international standards, evidenced by certifications including:

• ISO9001
• ISO14001
• CE
• RoHS
• UL

8.3. Contact Support

For any technical assistance, troubleshooting, or warranty claims, please contact Techfine customer support. Ensure you have your product model and serial number ready when contacting support.