Deye RW-M6.1-B
This datasheet provides complete technical specifications for the RW-M6.1-B. Key specifications include LiFePO4 chemistry, 6.14 kWh capacity, 51.2 V nominal voltage, and IP65 enclosure. Designed for residential solar self-consumption in the United Arab Emirates.
Technical Specifications
| Parameter | RW-M6.1-B | ||
|---|---|---|---|
| Battery Specifications | |||
| Battery Chemistry | LiFePO4 | ||
| Capacity (Ah) | 120 | ||
| Nominal Voltage (V) | 51.2 | ||
| Operating Voltage (V) | 43.2-57.6 | ||
| Energy (kWh) | 6.14 | ||
| Usable Energy (kWh) | 6.14 | ||
| Rated DC Power (kW) | 3.07 | ||
| Charge/Discharge Current (A) | Recommend 60 | Max. 100 | Peak (2mins, 25°C) 150 |
| Recommend Depth of Discharge | 100% | ||
| Mechanical Data | |||
| Dimension (W/H/D, mm) | 510×740×145 (Without Base, depth of 161mm with Hanging Board) | ||
| Weight Approximate (kg) | 58 | ||
| IP Rating of Enclosure | IP65 | ||
| Operating Conditions | |||
| Operating Temperature | Charge: 0~55°C (-20°C~55°C when heating on) / Discharge: -20°C~55°C | ||
| Storage Temperature | 0°C~35°C | ||
| Humidity | 5%~95% | ||
| Altitude | ≤2000m | ||
| Communication | |||
| Communication Port | CAN2.0, RS485 | ||
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
- Peak shaving applications
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 temperature.
- Consider battery placement to avoid direct sunlight exposure.
- Regular maintenance checks to ensure long-term performance.
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 RW-M6.1-B?
The RW-M6.1-B battery has a cycle life of over 6000 cycles at 80% depth of discharge. This ensures long-term reliability for residential energy storage.
What battery chemistry does the RW-M6.1-B use?
The RW-M6.1-B uses Lithium Iron Phosphate (LiFePO4) chemistry, which is cobalt-free and known for its safety and stability.
How many batteries can be connected in parallel with the RW-M6.1-B?
Up to 32 RW-M6.1-B units can be connected in parallel, allowing for scalable energy storage solutions.
What is the warranty for the RW-M6.1-B?
The RW-M6.1-B comes with a 10-year manufacturer warranty, providing peace of mind for long-term use.
Is the RW-M6.1-B suitable for outdoor installation?
Yes, the RW-M6.1-B is suitable for outdoor installation with an IP65 rating, ensuring protection against dust and water.
What protection features does the RW-M6.1-B include?
The RW-M6.1-B includes an IP65 enclosure rating and supports high discharge power with natural cooling, ensuring robust protection.
Can the RW-M6.1-B be used in United Arab Emirates?
Yes, the RW-M6.1-B can be used in the United Arab Emirates regions, as it is designed to operate in temperatures ranging from -20°C to 55°C.
What monitoring options are available for the RW-M6.1-B?
The RW-M6.1-B offers monitoring via CAN2.0 and RS485 communication ports, allowing for effective system integration and management.