Deye BOS-G
This datasheet provides complete technical specifications for the BOS-G series, including models BOS-G15 to BOS-G60. Key specifications include LiFePO₄ cell chemistry, 5.12 kWh module energy, and 51.2 V nominal voltage. Designed for residential energy storage applications in the Syria region.
Technical Specifications
| Parameter | BOS-G15 | BOS-G20 | BOS-G25 | BOS-G30 | BOS-G35 | BOS-G40 | BOS-G45 | BOS-G50 | BOS-G55 | BOS-G60 |
|---|---|---|---|---|---|---|---|---|---|---|
| Battery Module | ||||||||||
| Cell Chemistry | LiFePO₄ | |||||||||
| Module Energy (kWh) | 5.12 | |||||||||
| Module Nominal Voltage (V) | 51.2 | |||||||||
| Module Capacity (Ah) | 100 | |||||||||
| Battery System | ||||||||||
| Battery Module Number | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| System Nominal Voltage (V) | 153.6 | 204.8 | 256 | 307.2 | 358.4 | 409.6 | 460.8 | 512 | 563.2 | 614.4 |
| System Energy (kWh) | 15.36 | 20.48 | 25.6 | 30.72 | 35.84 | 40.96 | 46.08 | 51.2 | 56.32 | 61.44 |
| System Usable Energy (kWh) | 15.36 | 20.48 | 25.6 | 30.72 | 35.84 | 40.96 | 46.08 | 51.2 | 56.32 | 61.44 |
| Rated DC Power | 15.36 | 20.48 | 25.6 | 30.72 | 35.84 | 40.96 | 46.08 | 51.2 | 56.32 | 61.44 |
| Protection Features | ||||||||||
| Ingress Protection | IP20 | |||||||||
| Communication | ||||||||||
| Communication Port | CAN2.0 / RS485 | |||||||||
| Operating Conditions | ||||||||||
| Working Temperature (°C) | Charge: 0 - 55 / Discharge: -20 - 55 | |||||||||
| Humidity | 5% - 85%RH | |||||||||
| Altitude | ≤2000m | |||||||||
| Storage Temperature (°C) | 0 - 35 | |||||||||
| Mechanical Data | ||||||||||
| Dimension (W × D × H, mm) | 530 × 602 × 1629 | 530 × 602 × 2219 | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| Weight Approximate (kg) | 195 | 240 | 285 | 330 | 375 | 420 | 475 | 520 | 565 | 610 |
Note: Specifications are based on the official Deye SUN-18/20/21K-G04-LV datasheet. Values may be subject to change; always verify against the latest manufacturer documentation before system design and procurement.
Key Features & Technical Highlights
Dual MPPT for LV Three-Phase Systems
The SUN-18/20/21K-G04-LV series incorporates two independent MPPT trackers optimized for low-voltage three-phase grid connections. Each MPPT supports 3 strings (3+3 configuration), enabling flexible array designs across different roof orientations or partial shading scenarios.
With a wide MPPT voltage range of 200V to 700V and rated DC bus voltage of 350V, the inverter accommodates various string configurations while maintaining peak efficiency on LV 127V/220V and 133V/230V networks.
Industry-Leading Efficiency
Maximum conversion efficiency of 98.6% combined with MPPT tracking efficiency exceeding 99% minimizes energy losses throughout the system lifetime. This high efficiency directly translates to improved energy yield and faster return on investment for commercial installations.
Comprehensive Protection Suite
- DC Side: Reverse polarity protection, surge protection (Type II), integrated DC switch
- AC Side: Overcurrent, overvoltage, and short circuit protection with Type II surge protection
- System Safety: Anti-islanding, residual current detection, insulation impedance monitoring
- Thermal Management: Intelligent air cooling with automatic derating above 45°C
- Optional: Arc Fault Circuit Interrupter (AFCI) for enhanced fire safety
Smart Monitoring & Grid Support
Standard RS485/RS232 communication ports with optional GPRS, WiFi, Bluetooth, 4G, and LAN connectivity enable comprehensive remote monitoring. Zero Export and VSG (Virtual Synchronous Generator) applications provide advanced grid interaction capabilities for self-consumption optimization and grid stability support.
Applications & Use Cases
Typical Applications
- Solar self-consumption
- Backup power
- Time-of-use optimization
- Off-grid systems
- Energy independence
Installation Notes (Syria)
Climate Suitability: Mediterranean climate on coast, semi-arid inland. Hot dry summers. Excellent solar irradiance.
Regulatory: Coordinate with PEEGT for grid connection requirements.
- Ensure proper ventilation to maintain optimal operating temperatures.
- Coordinate with local utilities for grid compatibility.
- Consider additional protection for installations in high dust areas.
Model Selection Guide
Selecting between the SUN-18K, SUN-20K, and SUN-21K-G04-LV depends on:
- Array Size: Match PV array DC capacity to inverter input power (DC/AC ratio typically 1.1–1.3×)
- Available LV Service Capacity: Verify main breaker and feeder ampacity can accommodate inverter output current
- Load Profile: Size to typical daytime load for maximum self-consumption in zero-export applications
- Expansion Plans: Consider future load growth when selecting inverter capacity
| Model | AC Output | Max PV Input | Typical Array Size* |
|---|---|---|---|
| SUN-18K-G04-LV | 18 kW | 23.4 kW | 19.8 – 23.4 kWp |
| SUN-20K-G04-LV | 20 kW | 26 kW | 22 – 26 kWp |
| SUN-21K-G04-LV | 21 kW | 27.3 kW | 23.1 – 27.3 kWp |
*Based on DC/AC ratio of 1.1–1.3× for optimal energy harvest in high-irradiance locations.
Frequently Asked Questions
What is the cycle life of the BOS-G?
The BOS-G battery series offers a cycle life of over 6000 cycles at 80% depth of discharge. This ensures long-term reliability for residential energy storage applications.
What battery chemistry does the BOS-G use?
The BOS-G uses LiFePO₄ (Lithium Iron Phosphate) cell chemistry. This provides high safety, stability, and long cycle life.
How many batteries can be connected in parallel in the BOS-G system?
The BOS-G system supports flexible expansion with 3 to 12 battery modules connected in series. This allows for scalable energy storage solutions.
What is the warranty for the BOS-G?
The BOS-G comes with a 10-Year Manufacturer Warranty. This covers defects in materials and workmanship under normal use.
Is the BOS-G suitable for outdoor installation?
The BOS-G is not suitable for outdoor installation as it has an ingress protection rating of IP20. It is designed for indoor use only.
What protection features does the BOS-G include?
The BOS-G includes battery protection with auto charge/discharge, cell voltage balancing, and over-discharge/charge/current and temperature protection. These features ensure safe and efficient operation.
Can the BOS-G be used in Syria?
Yes, the BOS-G can be used in the Syria region. It complies with international certifications such as CE and IEC62619.
What monitoring options are available for the BOS-G?
The BOS-G offers smart control with remote monitoring, management, and upgrades. Communication is facilitated through CAN2.0 and RS485 ports.