1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of your SJY LiFePO4 Solar Energy Storage Battery. This 51.2V 300Ah (15kWh) battery is designed for various energy storage applications, offering high capacity, a long cycle life, and smart management features. Please read this manual thoroughly before using the product.
2. Important Safety Warnings
- Fire Risk: Please be aware of potential fire risks. Strictly follow the instruction manual for all charging and storage procedures.
- Disposal: For proper disposal, consult your local authority's website for information and dispose of the lithium-ion battery safely in accordance with all applicable legal requirements.
- Advanced Fire Protection: The battery is equipped with an aerosol fire-protection device that reacts within 0.2 seconds to release inert gas and prevent combustion, enhancing safety.
- Do not attempt to open, disassemble, or modify the battery pack.
- Keep the battery away from water, heat sources, and direct sunlight.
- Ensure proper ventilation during operation and charging.
3. Product Specifications
| Feature | Specification |
|---|---|
| Model No. | LFP-51.2V300Ah |
| Battery Type | LiFePO4 (Lithium Iron Phosphate) |
| Nominal Voltage | 51.2V |
| Nominal Capacity | 300Ah |
| Energy | 15.36kWh |
| Operation Voltage Range | 44-58.4V |
| Max. Charging Voltage | 58.4V |
| Max. Charging/Discharging Current | 200A |
| Life Time (25°C) | 15 years |
| Life Cycles (25°C) | 10000 Cycles |
| Operation Temperature | -20°C to 60°C @60+/-25% Relative Humidity |
| Charging Temperature | 0°C to 55°C |
| Discharging Temperature | -20°C to 55°C |
| Storage Temperature | 0°C to 45°C @60+/-25% Relative Humidity |
| Storage Time (Max) | 5 months @ 25°C; 3 months @ 35°C; 1 month @ 45°C |
| Battery Standard | IEC62619, UN38.3, ROHS, CE-EMC |
| Enclosure Protection Rating | IP65 |
| Dimensions (L*W*H) | 39cm * 27cm * 80cm (15.35in * 10.63in * 31.5in) |
| Weight | 115kg |
| Case Material | Stainless steel |
| Mobility | Equipped with rollers |
| BMS | 16S 200A Smart BMS |
| Cell Type | A Grade Prismatic Battery Cell |
| Communication Protocols | CAN, RS485 |
4. Package Contents
Upon receiving your SJY LiFePO4 Solar Energy Storage Battery, please verify that all items listed below are included and in good condition:
- SJY LiFePO4 Battery Unit
- Battery Power Cable
- Parallel Cable (if applicable for multi-battery setups)
- Battery Manual & Unpacking Instructions
5. Setup and Installation
5.1. Unpacking and Placement
Carefully unpack the battery from its sturdy wooden box packaging. Due to its weight (115kg), ensure you have adequate assistance or equipment for safe handling. The battery is equipped with rollers for easier movement once unpacked. Place the battery in a well-ventilated area, away from direct sunlight, heat sources, and moisture.
5.2. Parallel Connection
The SJY LiFePO4 battery supports parallel connection to achieve greater energy capacity. It can support up to 32 batteries connected in parallel. WARNING: This battery does NOT support series connection. Attempting to connect batteries in series will damage the unit and void the warranty.
5.3. Inverter Compatibility and Communication
This battery is designed for seamless integration with various solar inverter systems. It supports both CAN and RS485 communication protocols, making it compatible with over 20 different brands of inverters. This 'Plug and Play' feature simplifies system setup.
Compatible inverter brands include, but are not limited to:
- GROWATT
- PYLONTECH
- Deye
- invt
- LUXPOWERTEK
- Voltronic Power
- GOODWE
- solis
- SVC ENERGY
- SRNE
- LU
- SMA
- MUST
- SAKO
- SOFAR
- victron energy
5.4. BMS Features
The integrated Smart BMS (Battery Management System) is fully upgraded, offering 20+ protection functions and supporting 200A continuous high current charging and discharging. It also includes Bluetooth and Wi-Fi functions for remote monitoring and alerts.
6. Operation
6.1. Smart Monitoring via Bluetooth & WiFi
The advanced intelligent BMS allows you to monitor the battery's operating status remotely via Bluetooth and Wi-Fi. This ensures the battery operates in a safe and optimal environment. You can access real-time data such as:
- Pack Voltage and Current
- State of Charge (SOC)
- Individual Cell Voltages
- Battery Temperature
- Rated and Remaining Capacity
- Cycle Index
- Protection Status and Alarm State
6.2. Applications
The SJY LiFePO4 battery is versatile and suitable for a wide range of energy storage applications:
- Residential Solar Energy Systems: Ideal for households with solar panels, storing excess energy for use at night or during outages, reducing grid reliance and energy bills.
- Small-Scale Commercial Establishments: Provides stable power for shops, cafes, or offices, ensuring continuous operation for POS systems, lighting, and basic equipment, and cutting operational costs during peak electricity prices.
- Outdoor and Off-Grid Applications: Perfect for off-grid cabins, RVs, and outdoor events, supplying reliable power for lighting, communication, small appliances, and entertainment.
- Backup Power for Critical Equipment: Serves as a backup solution for essential devices like home medical equipment or commercial security systems, ensuring uninterrupted operation during grid failures.
7. Maintenance
- Regular Inspection: Periodically check the battery for any physical damage, loose connections, or signs of corrosion.
- Temperature Management: Ensure the battery operates within the specified temperature ranges: Charging (0°C to 55°C) and Discharging (-20°C to 55°C). Avoid extreme temperatures to prolong battery life.
- Cleaning: Keep the battery's exterior clean and free from dust and debris. Use a dry, soft cloth for cleaning.
- Long-Term Storage: If storing the battery for an extended period, ensure it is charged to approximately 50-70% of its capacity. Store it in a cool, dry place within the recommended storage temperature range (0°C to 45°C). Recharge every 3-6 months to prevent deep discharge.
8. Troubleshooting
This section provides general guidance for common issues. For complex problems, please contact customer support.
- Battery Not Charging:
- Check all cable connections to ensure they are secure.
- Verify that the inverter/charger is functioning correctly and is compatible.
- Ensure the ambient temperature is within the charging range (0°C to 55°C).
- Check the BMS status via the app for any protection alerts.
- Battery Not Discharging/Low Power Output:
- Confirm all connections are tight and correct.
- Check the battery's State of Charge (SOC) via the app.
- Ensure the ambient temperature is within the discharging range (-20°C to 55°C).
- Review the BMS status for any active protection functions.
- Communication Issues (Bluetooth/Wi-Fi):
- Ensure the battery is powered on.
- Check your device's Bluetooth/Wi-Fi settings and proximity to the battery.
- Restart the battery and your monitoring device.
9. User Tips
- Inverter Compatibility: The SJY battery is designed to work with a wide range of inverters (over 20 brands) using CAN and RS485 protocols. If you have an inverter like Solis or Anenji, it is likely compatible, but always verify the specific model's communication requirements with the manufacturer.
- Certifications: The product holds CE, UN38.3, ROHS, and CE-EMC certifications, ensuring it meets international safety and quality standards, including those required for Europe.
- Standalone Operation: While primarily designed for solar energy storage, this battery functions as an energy storage system (ESS). It can operate without solar panels, being charged from the grid or other compatible sources, and then providing power as needed.
- Monitoring App: Utilize the Bluetooth and Wi-Fi connectivity to regularly monitor your battery's performance and health through the dedicated smartphone application. This helps in proactive maintenance and troubleshooting.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact SJY customer service. Our team is committed to responding and resolving your issues within 24 hours.
11. Disposal Information
This product contains a lithium-ion battery. Do not dispose of it with general household waste. Please follow local regulations for the recycling and disposal of lithium-ion batteries. Contact your local waste management authority for specific instructions and designated collection points to ensure environmentally responsible disposal.
