Photovoltaic energy storage Huawei LUNA2000-21-S1 modular battery system LiFePO4 20.7 kWh 10.5 kW
- Huawei LUNA2000-21-S1 energy storage for photovoltaic installations, usable capacity of 20.7 kWh, maximum charging and discharging power of 10.5 kW.
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Huawei LUNA2000-21-S1 - Three-module energy storage system
Huawei LUNA2000-21-S1 is the highest model in Huawei's modular energy storage series, offering a usable capacity of 20.7 kWh. The system is designed for large-scale photovoltaic installations and provides a maximum charging and discharging capacity of 10.5 kW, while maintaining the highest safety and performance standards.
- Usable capacity of 20.7 kWh
- Maximum charging/discharging power of 10.5 kW
- Modular architecture with integrated energy optimizer
- Operating temperature range -20°C to +55°C
- IP66 degree of protection
Product description
The Huawei LUNA2000-21-S1 system consists of one power module and three battery modules with a capacity of 6.9 kWh each, for a total of 20.7 kWh of usable energy. Thanks to its modular architecture and built-in energy optimizer, the system provides maximum flexibility in configuration and optimization of energy use in high-demand installations.
The system is distinguished by its modern design, ability to operate over a wide temperature range and quiet operation of less than 29 dB. It can be installed indoors or outdoors, with wall or freestanding mounting options.
Safety and reliability
LUNA2000-21-S1 is equipped with a 5-layer protection system, including cell, electrical and structural levels. Using LiFePO₄ technology, the system features thermal stability, resistance to overheating and long life. Full depth of discharge (100% DOD) ensures maximum utilization of stored energy, and natural cooling eliminates the need for an active ventilation system.
Technical data
| Parameter | Value |
|---|---|
| Model | LUNA2000-21-S1 |
| Capacity of the battery module | 6.9 kWh × 3 |
| Usable capacity | 20.7 kWh |
| Charging/discharging power | 10.5 kW |
| Operating voltage range (1-phase) | 350 - 560 V |
| Operating voltage range (3-phase) | 600 - 980 V |
| Dimensions (S × G × W) | 590 mm × 255 mm × 1230 mm |
| Weight | 216 kg (with mounting kit) |
| Operating temperature range | -20°C - +55°C |
| Maximum installation altitude | 4000 m (derating above 2000 m) |
| Relative humidity | 5 - 95 % |
| Cooling | Natural convection |
| Noise level | < 29 dB |
| Protection class | IP66 |
| Cell technology | Lithium-iron-phosphate (LiFePO₄) |
| Installation | Freestanding (standard), wall mounting (optional) |
| Communication | RS485 / FE / CAN |
| Scalability | Up to 4 systems in parallel (82.8 kWh) |
| Compatibility with inverters | SUN2000-12/15/17/20/25K-MB0, SUN2000-3–10KTL-M1, SUN2000-2–6KTL-L1 |
| Certifications | CE, RCM, CEC, VDE2510-50, IEC62619, IEC60730, UN38.3, ISO13849, REACH, RoHS |
Technical data source: data sheet of LUNA2000-21-S1 Link
FAQ
- What is the capacity of the LUNA2000-21-S1? 20.7 kWh of usable capacity.
- How many modules does it contain? Three battery modules and one power module.
- What is the maximum power? 10.5 kW charging and discharging.
- What kind of cells are used? LiFePO₄ cells with a high level of safety.
- Is the system expandable? Yes, up to 82.8 kWh with a combination of 4 groups.
- What is the noise level? Less than 29 dB.
- What are the dimensions? 590 × 255 × 1230 mm.
- Is the system waterproof? Yes, the protection level is IP66.
- What is the operating temperature? From -20°C to +55°C.
- Can it be installed outdoors? Yes, suitable for outdoor installation.
- What inverters are compatible? Huawei SUN2000 M1, L1 and MB0 series.
- Does it have an energy optimizer? Yes, built into the modular architecture.
- Does it require cables between modules? No, the connection is made wirelessly.
- Can it be installed indoors? Yes, indoor and outdoor installation allowed.
- What certifications does it have? CE, VDE2510-50, IEC62619, REACH, RoHS.
Summary
Huawei LUNA2000-21-S1 is an advanced high-capacity energy storage system dedicated to high-power installations. It provides maximum flexibility, safety and energy efficiency, providing a robust solution for homes and commercial facilities.













