Deye BOS-G-Pro
This datasheet provides complete technical specifications for the BOS-G-Pro models: BOS-G25-Pro, BOS-G40-Pro, BOS-G60-Pro, and BOS-G80-Pro. Key specifications include LiFePO₄ cell chemistry, 5.12 kWh module energy, and a wide operating temperature range from -20°C to 55°C. Designed for residential energy storage in the United Arab Emirates region.
Technical Specifications
| Parameter | BOS-G25-Pro | BOS-G40-Pro | BOS-G60-Pro | BOS-G80-Pro |
|---|---|---|---|---|
| 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 | 5 (Min) | 8 | 12 | 16 (Max) |
| System Nominal Voltage (V) | 256 | 409.6 | 614.4 | 819.2 |
| System Operating Voltage (V) | 220-292 | 352-467.2 | 528-700.8 | 704-934.4 |
| System Energy (kWh) | 25.6 | 40.96 | 61.44 | 81.92 |
| System Usable Energy (kWh) | 23.04 | 36.86 | 55.3 | 73.72 |
| Rated DC Power (kW) | 25.6 | 40.96 | 55.3 | 81.92 |
| Charge / Discharge Current (A) | 50 | |||
| Nominal Current (A) | 100 | |||
| Peak Discharge (2 mins, 25°C) | 125 | |||
| Operating Conditions | ||||
| Working Temperature (°C) | Charge: 0 - 55 / Discharge: -20 - 55 | |||
| Humidity | 5% - 85%RH | |||
| Altitude | ≤3000m | |||
| Storage Temperature (°C) | 0 - 35 | |||
| Mechanical Data | ||||
| IP Rating of Enclosure | IP20 | |||
| Dimension (W×D×H, mm) | 530×602×1629 | 530×602×2219 | 1060×602×1629 | N/A |
| Weight Approximate (kg) | 290 | 428 | 622 | 883 |
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
- Residential energy storage
Installation Notes (United Arab Emirates)
Climate Suitability: Hot desert climate with temperatures reaching 50°C in summer. High humidity in coastal areas (up to 100% RH). Frequent sandstorms and dust.
Regulatory: Coordinate with DEWA, ADDC, ESMA for grid connection requirements.
- Ensure indoor installation due to IP20 rating
- Consider battery capacity based on energy needs
- Coordinate with local utilities for grid integration
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-Pro?
The BOS-G-Pro has a long cycle life with over 6000 cycles. This ensures durability and longevity for residential energy storage applications.
What battery chemistry does the BOS-G-Pro use?
The BOS-G-Pro uses LiFePO₄ cell chemistry. This type of chemistry is known for its safety and stability in battery applications.
How many batteries can be connected in parallel with the BOS-G-Pro?
The BOS-G-Pro allows for flexible configuration with a minimum of 5 and a maximum of 16 battery modules connected in parallel. This enables capacity expansion as needed.
What is the warranty for the BOS-G-Pro?
The BOS-G-Pro comes with a 10-year manufacturer warranty. This warranty covers defects in materials and workmanship under normal use conditions.
Is the BOS-G-Pro suitable for outdoor installation?
The BOS-G-Pro is not suitable for outdoor installation as it has an IP20 rating. It is designed for indoor use in a controlled environment.
What protection features does the BOS-G-Pro include?
The BOS-G-Pro includes an intelligent BMS with protection functions. These features help safeguard the battery system from overcharge, over-discharge, and short circuits.
Can the BOS-G-Pro be used in United Arab Emirates?
Yes, the BOS-G-Pro can be used in the United Arab Emirates region. It is designed to operate in a wide temperature range from -20°C to 55°C, suitable for the climate in these areas.
What monitoring options are available for the BOS-G-Pro?
The BOS-G-Pro offers intelligent monitoring through its BMS. This system provides real-time data on battery status and performance.