sales@gsl-energy.com 
0086 13923720280
125kW/261kWh Liquid-Cooled Battery Energy Storage System for Commercial & Industrial Applications
Featuring an innovative all-in-one architecture, the system integrates a 261.248kWh high-voltage LiFePO₄ battery, a 125kW Deye three-phase hybrid inverter, GSL Energy's intelligent Battery Management System (BMS), Energy Management System (EMS), liquid cooling technology, fire protection system, and cloud monitoring platform into a single outdoor cabinet.
Compared with conventional energy storage systems that require separate battery cabinets, inverter cabinets, and control systems, the GSL-CESS-125K261 significantly simplifies engineering, shortens installation time, reduces commissioning costs, and improves long-term operational reliability.
Designed for both on-grid and off-grid applications, the system supports peak shaving, load shifting, energy arbitrage, backup power, solar self-consumption, demand response, and Virtual Power Plant (VPP) participation, making it an ideal energy storage solution for factories, commercial buildings, industrial parks, hotels, shopping malls, EV charging stations, renewable energy projects, and microgrids.
Fully Integrated All-in-One Energy Storage Solution
The BESS-261K adopts a highly integrated cabinet design that combines every critical component required for commercial battery energy storage into a single factory-tested system.
The integrated solution includes:
- 261.248kWh High-Voltage LiFePO₄ Battery
- 125kW Deye Three-Phase Hybrid Inverter
- Intelligent Battery Management System (BMS)
- Energy Management System (EMS)
- Liquid Cooling Unit
- Aerosol Fire Suppression System
- Smoke Detection
- Fire Detection
- Intelligent Dehumidifier
- Cloud Monitoring Platform
This factory-integrated architecture minimizes on-site wiring and engineering work while improving installation quality, reducing commissioning time, and lowering the total cost of deployment.
Integrated 125kW Three-Phase Hybrid Inverter
The GSL-CESS-125K261 comes factory-integrated with a 125kW Deye three-phase hybrid inverter, delivering highly efficient bidirectional power conversion for battery charging and discharging.
The hybrid inverter intelligently manages energy flow between the solar PV system, battery storage, utility grid, diesel generator, and electrical loads, ensuring maximum energy utilization under different operating conditions.
Supporting both grid-connected and off-grid operation, the system enables a wide range of intelligent energy management strategies, including:
- Peak Shaving
- Load Shifting
- Energy Arbitrage
- Solar Self-Consumption
- Backup Power
- Demand Charge Management
- Microgrid Operation
- Virtual Power Plant (VPP)
Because the hybrid inverter is fully integrated and factory-tested, customers benefit from simplified installation, faster commissioning, improved system compatibility, and reduced maintenance requirements.
High-Voltage 261kWh LiFePO₄ Battery Platform
At the heart of the system is a 261.248kWh high-voltage lithium iron phosphate (LiFePO₄) battery, built with premium 314 Ah battery cells for exceptional consistency and long-term reliability.
The battery system consists of five 52.25kWh battery modules, delivering a rated voltage of 832V and an operating voltage range of 650V–949V.
Compared with conventional low-voltage battery systems, the high-voltage platform offers:
- Higher energy conversion efficiency
- Lower cable losses
- Reduced operating current
- Improved system performance
- Higher power density
- Lower Balance of System (BOS) costs
This optimized architecture is particularly suitable for commercial and industrial battery storage applications that require high efficiency and reliable power delivery.
High-Voltage 261kWh LiFePO₄ Battery Platform
At the heart of the system is a 261.248kWh high-voltage lithium iron phosphate (LiFePO₄) battery, built with premium 314 Ah battery cells for exceptional consistency and long-term reliability.
The battery system consists of five 52.25kWh battery modules, delivering a rated voltage of 832V and an operating voltage range of 650V–949V.
Compared with conventional low-voltage battery systems, the high-voltage platform offers:
- Higher energy conversion efficiency
- Lower cable losses
- Reduced operating current
- Improved system performance
- Higher power density
- Lower Balance of System (BOS) costs
This optimized architecture is particularly suitable for commercial and industrial battery storage applications that require high efficiency and reliable power delivery.
Intelligent Liquid Cooling Technology
The GSL-CESS-125K261 utilizes an advanced intelligent liquid cooling system that continuously regulates battery temperature to maintain optimal operating conditions.
Compared with traditional air-cooled battery systems, liquid cooling delivers:
- Superior temperature consistency
- Improved battery efficiency
- Reduced temperature differences between cells
- Lower battery degradation
- Longer battery service life
- Stable high-power operation
- Reduced auxiliary power consumption
Intelligent thermal management maximizes battery performance throughout the entire system lifecycle while reducing maintenance requirements.
8,000+ Cycle Life with Lower Total Cost of Ownership
Built using premium Grade A LiFePO₄ battery cells, the system delivers outstanding durability and long-term operational reliability.
The battery supports:
- ≥8,000 charge and discharge cycles
- 90% Depth of Discharge (DoD)
- Excellent thermal stability
- High charge/discharge efficiency
- Long service life
Combined with a 10-year warranty, the GSL-CESS-125K261 significantly reduces lifecycle costs while maximizing return on investment.
Comprehensive Multi-Layer Safety Protection
Safety is integrated into every aspect of the system design.
The GSL-CESS-125K261 incorporates multiple intelligent protection mechanisms to ensure reliable operation under demanding commercial and industrial conditions.
Battery Safety
- Premium 314Ah LiFePO₄ battery cells
- Intelligent Battery Management System (BMS)
- Real-time cell monitoring
- Cell balancing
- Fault diagnosis and early warning
Electrical Safety
- Short-circuit protection
- Over-current protection
- Over-voltage protection
- Cell over-voltage protection
- Cell under-voltage protection
- Over-temperature protection
Fire Protection
- Smoke detector
- Fire detector
- Aerosol automatic fire suppression
- Intelligent liquid cooling
- Pressure relief design
Environmental Protection
- IP55 outdoor enclosure
- Operating temperature:
- Charging: 0°C to 55°C
- Discharging: −20°C to 55°C
- Intelligent dehumidifier
- Outdoor floor-mounted cabinet
The comprehensive safety architecture continuously protects the battery system while ensuring long-term operational stability and reliability.
Smart Energy Management System
The integrated Energy Management System (EMS) provides intelligent control of energy generation, storage, and consumption.
Key features include:
- Real-time monitoring
- Remote diagnostics
- Cloud monitoring
- Intelligent energy scheduling
- Battery health management
- System alarm management
- Historical operating data
- Multi-site energy management
Supporting CAN communication, the system integrates seamlessly with photovoltaic systems, utility grids, generators, and third-party monitoring platforms, helping users optimize energy consumption and improve operational efficiency.
Flexible Expansion for Growing Energy Demands
The battery system is designed with modular scalability to support future capacity expansion.
A standard configuration supports three battery clusters, while optional Battery Array Units (BAU) enable parallel expansion of up to 32 battery cabinets, allowing projects to scale from hundreds of kilowatt-hours to multi-megawatt-hour energy storage systems.
The modular design protects future investments while minimizing expansion costs.
Compact Design for Fast Installation
Despite integrating a complete commercial battery energy storage solution, the cabinet measures only:1300 × 1320 × 2380 mm
The compact footprint saves valuable installation space while simplifying transportation, installation, and maintenance.
Factory pre-assembly and complete system testing reduce on-site commissioning work, accelerate project delivery, and improve overall installation quality.
Typical Applications
The GSL-CESS-125K261 is ideal for a wide range of commercial and industrial applications, including:
- Commercial Buildings
- Manufacturing Plants
- Industrial Parks
- Hotels & Resorts
- Shopping Malls
- Hospitals
- Agricultural Farms
- EV Charging Stations
- Data Centers
- Solar PV Energy Storage
- Microgrid Systems
- Backup Power Systems
- Peak Shaving Projects
- Demand Response Programs
- Virtual Power Plants (VPP)
Faqs
Email: sales@gsl-energy.com
Tel: +86 755 84515360
Address: A602, Tianan Cyber Park, Huangge North Road, Longgang District, Shenzhen, China0086 13923720280