Deye SE-F5 & SE-F12
This datasheet provides complete technical specifications for the SE-F5 & SE-F12 residential LV batteries. Key specifications include LiFePO₄ chemistry, 6000+ cycle life, and scalability up to 32 units in parallel. Designed for energy storage applications in the United Arab Emirates region.
Technical Specifications
| Parameter | SE-F5 | SE-F12 |
|---|---|---|
| Battery Specifications | ||
| Battery Chemistry | LiFePO₄ | |
| Capacity (Ah) | 100 Ah | 230 Ah |
| Scalability | Max. 32 pcs in parallel | |
| Nominal Voltage | 51.2 V | |
| Operating Voltage | 44.8 V - 57.6 V | |
| Nominal Energy | 5.12 kWh | 11.8 kWh |
| Charge Current (Max. Continuous) | 50 A | 115 A |
| Charge Current (Peak) | 75 A (10 sec) | 175 A (10 sec) |
| Discharge Current (Max. Continuous) | 120 A | 230 A |
| Discharge Current (Peak) | 150 A (10 sec) | 280 A (10 sec) |
| Mechanical Data | ||
| Recommend Depth of Discharge | 80% DoD | |
| Dimension (W × H × D) | 370 × 548 × 140 mm | 400 × 583 × 232 mm |
| Weight Approximate | 41 kg | 82 kg |
| LED Indicator | LED (SOC, working, protecting) & Buzzer | |
| IP Rating of Enclosure | IP21 | |
| Operating Conditions | ||
| Operating Temperature | Charge: 0~55°C / Discharge: -20°C~55°C | |
| Storage Temperature | 0~35°C | |
| Relative Humidity | 95% (non-condensing) | |
| Altitude | <3000m | |
| Cycle Life | >=6000(25°C±2°C,80%DoD,70%EOL) | |
| Communication | ||
| Communication | CAN2.0, RS485, Bluetooth, APP | |
| Warranty | ||
| Warranty Period | 5 years | |
| Energy Throughput | 8 MWh | 18 MWh |
| Certifications | ||
| Certification | UN38.3, MSDS | |
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 proper ventilation to maintain optimal operating temperatures.
- Consider additional enclosures for enhanced protection in outdoor installations.
- Verify compatibility with existing solar and energy management systems.
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 SE-F5 & SE-F12?
The SE-F5 & SE-F12 have a cycle life of >=6000 cycles at 25°C±2°C, 80% DoD, and 70% EOL. This ensures long-term reliability for residential energy storage.
What battery chemistry does the SE-F5 & SE-F12 use?
The SE-F5 & SE-F12 use LiFePO₄ battery chemistry. This type of chemistry is known for its safety and long cycle life.
How many batteries can be connected in parallel for the SE-F5 & SE-F12?
Up to 32 SE-F5 & SE-F12 batteries can be connected in parallel. This allows for flexible expansion of energy storage capacity.
What is the warranty for the SE-F5 & SE-F12?
The SE-F5 & SE-F12 come with a 5-year manufacturer warranty. This covers defects in materials and workmanship.
Is the SE-F5 & SE-F12 suitable for outdoor installation?
The SE-F5 & SE-F12 have an IP21 rating, which is not suitable for outdoor installation. They should be installed in a dry, indoor environment.
What protection features does the SE-F5 & SE-F12 include?
The SE-F5 & SE-F12 include comprehensive protection with an advanced BMS and active fuse. This ensures safe operation and longevity.
Can the SE-F5 & SE-F12 be used in United Arab Emirates?
Yes, the SE-F5 & SE-F12 can be used in the United Arab Emirates. They are designed to operate in temperatures from -20°C to 55°C, suitable for the region's climate.
What monitoring options are available for the SE-F5 & SE-F12?
The SE-F5 & SE-F12 offer monitoring options via CAN2.0, RS485, Bluetooth, and an APP. This allows for both local and remote monitoring.