261 kWh Liquid-Cooled Battery Energy Storage System (BESS)
Key Features
Combines high-capacity LiFePO₄ batteries, power conversion system (PCS), intelligent EMS, and BMS in a single cabinet for simplified deployment and reduced footprint.
Factory-assembled and tested for faster on-site commissioning and lower installation costs.
Rated for ~261 kWh total energy storage capacity
Delivers up to ~125 kW continuous power with peak output ~137.5 kW.
System round-trip efficiency up to ~90 %.
Supports 8,000+ charge/discharge cycles for long operational life.
Liquid cooling maintains optimal temperature across battery modules, reducing thermal stress and prolonging cycle life.
Supports high-performance charging/discharging and consistent operation even in demanding temperatures.
Parallel expansion up to multiple units (e.g., 10 units) enables MWh-level energy storage.
Smart energy management platform with real-time data monitoring and remote OTA support.
Multi-layer electrical and thermal safety mechanisms for robust protection.
IP55/C5 corrosion resistance and wide ambient temperature operating range (approx. −30°C to 55°C).
Integrated fire and fault detection systems for improved reliability.
Key Applications
• High integration and modular design for easy maintenance
• On-demand deployment with support for multi-cabinet parallel operation
• Supports off-grid operation and seamless VF/PQ switching
• Multiple electrical protections with active warnings and active protection
• Supports remote OTA and cloud platform
• AC/DC integrated dual-power supply system
✔ Commercial and Industrial (C&I) Energy Storage
✔ Solar PV Hybrid Systems
✔ Peak Shaving & Load Shifting
✔ Backup Power / UPS Support
✔ Microgrid and Off-Grid Systems
✔ Virtual Power Plant (VPP) Integration
This system is engineered for compatibility with leading inverters and smart energy platforms to enable optimized performance and predictable ROI.
Why Choose Our Liquid-Cooled BESS
● Superior Thermal Management — liquid cooling for longer life and higher performance.
● Modular & Scalable — expand capacity easily with additional units.
● All-in-One Solution — reduced installation complexity and reduced downtime.
● High Efficiency & Longevity — high cycle life, high conversion efficiency.
● Robust Safety & Reliability — multi-layer protections and industrial-grade weather resistance.
| Model | L261 |
| Rated Capacity | 261.25kWh |
| Charge/Discharge C-rate | 0.5CP |
| Rated AC Power | 125kW |
| Cell Parameters | LFP−3.2V−314Ah−1004.8Wh |
| Module Parameters | LFP−166.4V−52.2kWh |
| Rated DC Voltage | 832Vdc |
| Operating Voltage Range | 715∼923Vdc |
| Maximum DC Current | 200A |
| System Life | 8000 cycles @25℃,0.5CP,95%DOD,≥70%EOL |
| Cycle Efficiency | AC side ≥88% |
| BMS Solution | Two-way Active Balancing |
| Communication Interface | RS485/CAN/Ethernet/MQTT |
| Thermal Management Solution | Smart Liquid Cooling |
| Fire Protection Solution | Fire Detector Pipe + Gas/Smoke/Temperature Detection + Fluoro-ketone |
| Grid Voltage | 400Vac (Three-phase four-wire) |
| Rated AC Current | 180A |
| Rated Grid Frequency | 50/60Hz |
| Isolation Method | Non-isolated |
| Wiring Method | Bottom Outlet |
| Altitude | ≤3500m (>2000m derating) |
| Operating Temperature | −20℃∼50℃ |
| Protection Rating | IP55 |
| Weight | 2.2T |
| Dimensions L×W×H | 865×1200×2200mm |
| Product Certification | GB/T36276, GB/T34131, UL1973, UL9540A, IEC62619, UN38.3 |
Note: These specs can be tailored to your specific design, chemistry choices, safety certifications, and cabinet format.
