1. Product Overview
The SJY 51.2V 100Ah LiFePO4 Battery Pack is a high-performance lithium iron phosphate battery designed for solar energy storage and 5kW inverter systems. It features Grade A prismatic cells, a smart Battery Management System (BMS), and a long lifespan of over 6000 cycles or 15 years. This battery is available in rack-mount and wall-mount configurations, with an integrated LCD screen for monitoring.
2. Safety Information
Always read and understand all safety instructions before installing or operating the battery. Failure to follow these instructions may result in electric shock, fire, serious injury, or death. Keep this manual for future reference.
- Do not disassemble, modify, or attempt to repair the battery pack.
- Keep the battery away from fire, water, and corrosive substances.
- Ensure proper ventilation during operation.
- Use appropriate personal protective equipment (PPE) during installation and maintenance.
- Do not short-circuit the battery terminals.
3. Installation and Setup
3.1 Unpacking and Inspection
Upon receiving the battery pack, carefully unpack it and inspect for any signs of damage. Report any damage to your supplier immediately. Ensure all components are present.
3.2 Physical Dimensions and Mounting
The battery pack is designed for rack mounting. Ensure adequate space and ventilation around the unit.
Dimensions (L×W×H): 613mm × 443mm × 158mm
Weight: Approximately 47kg
3.3 Connections
Refer to the control panel diagram for connection points. Ensure all connections are secure and correctly polarized.
- Battery Anode (2): Positive terminal for power connection.
- Battery Negative (3): Negative terminal for power connection.
- Power Key (4): Used to turn the battery pack ON or OFF.
- CAN (8): Communication interface for connecting to compatible devices.
- RS232 RS485A/B (9): Additional communication interfaces.
- Dry Contact (10): For external control or monitoring signals.
3.4 Parallel Connection
The SJY battery pack supports parallel connection for increased capacity and power output. Up to 16 batteries can be connected in parallel for larger inverter systems (e.g., 10kV/15kV/20kV). Ensure all batteries are of the same voltage and capacity when connecting in parallel.
3.5 Initial Charge
It is recommended to fully charge the battery pack before its first use to ensure optimal performance and calibration of the State of Charge (SOC) indicator.
4. Operating Instructions
4.1 Powering On/Off
To power on the battery pack, press the Power Key (4) on the control panel. The LCD screen (5) will illuminate, displaying battery status. To power off, press and hold the Power Key until the unit shuts down.
4.2 LCD Display
The LCD screen (5) provides real-time information about the battery's status, including:
- State of Charge (SOC)
- Full Charge Capacity (FCC)
- Remaining Capacity (Rm)
- Cell Voltage (CC)
- Pack Voltage
- Current (In/Out)
- Temperature
4.3 Menu Buttons
Use the Menu Buttons (6) to navigate through the LCD display and set various parameters. Consult the detailed technical manual (if available) for advanced parameter settings.
4.4 Communication Interfaces
The battery pack includes CAN, RS232, and RS485A/B communication interfaces (8, 9) for integration with compatible inverters and monitoring systems. These interfaces allow for data exchange and remote control of the battery.
5. Maintenance
5.1 General Care
- Keep the battery pack clean and free from dust and debris.
- Ensure proper ventilation to prevent overheating.
- Regularly check all cable connections for tightness and corrosion.
- Avoid exposing the battery to extreme temperatures or direct sunlight for prolonged periods.
5.2 Storage
If the battery pack is to be stored for an extended period, ensure it is charged to approximately 50% State of Charge (SOC) before storage. Store in a cool, dry place within the recommended storage temperature range.
- Storage Time / Temperature:
- 5 months @ 25°C
- 3 months @ 35°C
- 1 month @ 45°C
5.3 Operation Temperature
For optimal performance and longevity, operate the battery within the specified temperature range:
- Operation Temperature: -20°C to 60°C @ 60+/-25% Relative Humidity
6. Troubleshooting
This section provides basic troubleshooting steps. For complex issues, contact SJY customer support.
6.1 Battery Not Powering On
- Check if the Power Key (4) has been pressed correctly.
- Ensure the battery terminals are securely connected.
- Verify that the battery has sufficient charge.
6.2 Abnormal LCD Readings or Alarms
- Note any error codes or unusual readings on the LCD screen.
- Check the State & ALM (7) indicators for any active alarms.
- Refer to the technical manual for specific alarm interpretations.
- Ensure communication cables (CAN, RS232, RS485A/B) are properly connected if integrated with an inverter.
6.3 Reduced Performance
- Check the battery temperature; ensure it's within the optimal operating range.
- Verify that the charging and discharging currents are within the maximum limits.
- Ensure the inverter or charger settings are compatible with the battery specifications.
7. Specifications
| Feature | Specification |
|---|---|
| Brand Name | SJY |
| Model Number | LFP-B48V100Ah (Solar-48V100Ah) |
| Type | LiFePO4 (Lithium Iron Phosphate) |
| Battery Grade | A |
| Nominal Capacity | 100Ah |
| Voltage | 51.2V |
| Energy | 5.12kWh |
| Operation Voltage | 37.6V - 58.4V |
| Max. Charging Voltage | 58.4V |
| Max. Charging and Discharging Current | 100A |
| Life Cycles (25°C) | 6000+ Cycles |
| Battery Work Lifespan | 15 Years |
| Operation Temperature | -20°C to 60°C @60+/-25% Relative Humidity |
| Storage Temperature | 0°C to 45°C @60+/-25% Relative Humidity |
| Battery Standard | IEC62619, UN38.3, ROHS, CE-EMC |
| Enclosure Protection Rating | IP65 |
| Dimensions (L×W×H) | 613mm × 443mm × 158mm |
| Weight | 47kg |
| Battery Number (Cells) | 16 |
| Set Type | Batteries Only |
| Replacement Battery | No |
| High-concerned chemical | None |
8. Warranty and Support
8.1 Warranty Information
The SJY 51.2V 100Ah LiFePO4 Battery Pack comes with a 10-year warranty, reflecting its robust design and long expected lifespan of 15 years. This warranty covers manufacturing defects and ensures reliable performance under normal operating conditions.
8.2 Customer Support
For technical assistance, warranty claims, or any other inquiries, please contact SJY Official Store customer support. Contact details can typically be found on the product packaging or the official SJY website.
9. User Tips
- Inverter Compatibility: This battery is designed to be compatible with most major inverter brands. For best results, ensure your inverter is configured for LiFePO4 batteries and matches the battery's voltage and current requirements.
- Monitoring: Regularly check the LCD display for battery status, especially State of Charge (SOC) and cell voltages, to ensure balanced operation and prevent over-discharge or over-charge.
- Parallel Expansion: If expanding your system with additional batteries, ensure all units are from the same manufacturer and model to maintain system balance and efficiency.
