125kW 261kWh Liquid Cooled Commercial and Industrial BESS Energy Storage System
The 125kW 261kWh Liquid Cooled C&I Battery Energy Storage System is a highly integrated BESS solution designed for commercial and industrial energy storage applications. Built with HiTHIUM 314Ah prismatic LFP cells, it combines PCS, BMS, EMS, liquid cooling and fire protection for safe, reliable and efficient energy storage.
Model No :
ESS Cabinet 125kW/261kWhWeight :
≥2.7tDimension :
1350*1000*2380mm125kW 261kWh Liquid Cooled C&I Battery Energy Storage System

The 125kW 261kWh liquid cooled battery energy storage system is designed for commercial and industrial energy storage projects that require high safety, reliable operation, efficient thermal management and highly integrated system architecture. With a nominal energy capacity of 261kWh and nominal power output of 125kW, this C&I BESS provides a compact solution for a wide range of commercial and industrial energy storage applications.
Product Features
The system uses HiTHIUM 314Ah prismatic LFP battery cells with a 1P52S module configuration and five battery modules. LFP battery technology provides a stable foundation for commercial battery storage applications, while the high-capacity battery configuration supports efficient energy storage and power delivery.
The cabinet has a nominal DC voltage of 832V and an operating voltage range of 715V to 923V. The nominal energy capacity is 261kWh, with each battery module providing 52.2kWh. The rated charge and discharge rate is 0.5P / 0.5P.
Liquid cooling provides efficient thermal management for the battery energy storage system and helps maintain an optimized operating temperature during charging and discharging. Effective thermal management can improve energy throughput and support stable system operation across different operating conditions.
The system is designed for an ultra-wide operating temperature range from -30°C to 50°C, making it suitable for commercial and industrial energy storage projects operating in demanding environmental conditions.
Instead of requiring separate equipment for multiple core functions, the energy storage cabinet integrates the major components required for a complete BESS solution, including:
This integrated architecture can simplify system deployment and reduce the complexity of designing a commercial and industrial battery storage system.
On the AC side, the system features a 400Vac three-phase configuration with neutral and protective earth, making it suitable for commercial and industrial electrical environments. The nominal AC output power is 125kW, while the maximum power reaches 137kW. Nominal output current is 180A, with a maximum output current of 200A.
The system supports 50Hz and 60Hz grid frequencies and provides CAN and RS485 communication interfaces for system monitoring and integration.
Safety is a major consideration for C&I battery energy storage projects. The system incorporates multiple protection measures, including temperature detection, smoke detection and an aerosol fire suppression system. It also includes a deflagration vent and fire hose coupling as part of the cabinet safety design.
The battery system uses highly safe prismatic HiTHIUM LFP cells and liquid cooling to support thermal stability. The system is designed around multiple layers of battery, thermal and fire protection for commercial and industrial energy storage applications.
The battery energy storage system supports a range of international safety and compliance requirements. The listed safety certifications and standards include IEC 62619, IEC 62477, IEC 60730, IEC 61000 and UN38.3.
The PCS certifications include EN 50549-1, G99 and VDE4110. The system also complies with RoHS and REACH requirements and uses cobalt-free battery chemistry.
The complete BESS cabinet measures 1350×1000×2380 mm and has an IP55 protection rating. The cabinet weight is approximately 2.7 tonnes or more.
With an integrated design, liquid cooling technology and high energy density, the 261kWh battery storage cabinet can help optimize space utilization for commercial and industrial energy storage installations.
Key Product Specifications
| Parameter | Specification |
| Product Type | Liquid Cooled C&I BESS |
| Nominal Power | 125kW |
| Maximum Power | 137kW |
| Nominal Energy | 261kWh |
| Battery Type | HiTHIUM LFP 314Ah |
| Battery Module Energy | 52.2kWh |
| Battery Modules | 5 |
| DC Nominal Voltage | 832V |
| DC Operating Voltage | 715V to 923V |
| Charge / Discharge Rate | 0.5P / 0.5P |
| AC Voltage | 400Vac |
| AC Configuration | 3W + N + PE |
| Grid Frequency | 50Hz / 60Hz |
| Nominal Output Current | 180A |
| Maximum Output Current | 200A |
| Cooling Method | Liquid Cooling |
| Protection Rating | IP55 |
| Operating Temperature | -30°C to 50°C |
| Maximum Altitude | 4000m, derating above 2000m |
| Communication | CAN / RS485 / Ethernet |
| Cabinet Weight | ≥ 2.7 tonnes |
This 125kW 261kWh BESS is designed for commercial and industrial energy storage applications where high energy capacity, reliable power conversion, thermal management and system safety are important considerations.
The liquid cooled battery storage cabinet combines a 261kWh LFP battery system with a 125kW PCS and integrated energy management and protection systems, providing a complete energy storage platform for C&I projects.
For EPC contractors, solar developers, system integrators, distributors and commercial energy users, the integrated architecture can provide a practical foundation for customized battery energy storage projects.
The 125kW 261kWh liquid cooled BESS can be considered for a variety of commercial and industrial energy storage projects, including:
Contact our team for technical specifications, system configuration, project requirements and customized C&I energy storage solutions.
Frequently Asked Questions
Q1: What is the capacity of this BESS?
A1: This commercial and industrial BESS has a nominal energy capacity of 261kWh and a nominal power output of 125kW, making it suitable for C&I energy storage applications.
Q2: What type of battery cells does the 125kW 261kWh BESS use?
A2: The system uses HiTHIUM 314Ah prismatic LFP battery cells. The battery system is configured with five battery modules, with each module providing 52.2kWh of nominal energy.
Q3: Is this a liquid cooled battery energy storage system?
A3: Yes. The 261kWh BESS uses a liquid cooling system for advanced thermal management. Liquid cooling helps maintain an optimized operating temperature and supports stable system operation.
Q4: What are the main components integrated into the BESS cabinet?
A4: The highly integrated energy storage cabinet includes the PCS, BMS, EMS, liquid cooling system, battery modules and fire protection system, helping simplify system integration and deployment.
Q5: Is the 125kW BESS suitable for three-phase applications?
A5: Yes. The AC side is rated at 400Vac with a 3W + N + PE configuration. The system supports 50Hz and 60Hz grid frequencies and is designed for commercial and industrial energy storage applications.
Q6: What safety features does this commercial battery storage system have?
A6: The BESS includes smoke and temperature detection, an aerosol fire suppression system, a deflagration vent and fire hose coupling. It also uses HiTHIUM prismatic LFP cells and liquid cooling for thermal management.
Q7: What certifications and compliance standards does the BESS support?
A7: The system lists IEC 62619, IEC 62477, IEC 60730, IEC 61000 and UN38.3. The PCS certifications include EN 50549-1, G99 and VDE4110. The system also complies with RoHS and REACH requirements and is cobalt free.
Q8: What applications is this 125kW 261kWh BESS suitable for?
A8: The system is designed for commercial and industrial energy storage applications, including factory, warehouse, commercial building and renewable energy storage projects. It can also be integrated into solar PV plus battery energy storage solutions.
Q9: Can this liquid cooled BESS be customized for a specific project?
A9: The system is designed as an integrated C&I energy storage platform. For project-specific requirements such as system configuration, electrical conditions, communication requirements and application scenarios, please contact our technical team for solution evaluation.
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