Designed for commercial and industrial energy storage applications in the United States and North America, this 125kW/261.2kWh liquid-cooled battery energy storage system combines a high-voltage LiFePO₄ battery, 125kW PCS, liquid cooling, communication and system control within a compact cabinet platform.
Built around 314Ah LFP cells, the system operates at 832V nominal battery voltage and delivers 125kW rated output power with up to 98.6% PCS conversion efficiency. Its AC480V architecture makes it suitable for commercial buildings, factories, data centers, EV charging stations, renewable energy projects and other C&I applications.
For larger projects, multiple cabinets can be deployed together. Typical configurations range from a single 261.2kWh cabinet to 5 cabinets totaling 1,306kWh (1.306MWh), providing a practical expansion path for growing commercial energy requirements.
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| Specification | GSL-CESS-125K261 (US) |
|---|---|
| Rated Output Power | 125kW |
| Battery Rated Energy | 261.2kWh |
| Battery Type | LFP 314Ah |
| Cell Configuration | 260S1P (5 × 52S1P) |
| Battery Rated Voltage | 832V |
| Battery Voltage Range | 728–936V |
| Rated Grid Voltage | AC480V |
| AC Access | 3P 3W+PE / 3P 3W+N+PE |
| Grid Frequency | 50Hz / 60Hz |
| Output Current | 150A |
| Charge / Discharge Rate | ≤0.5P (157A) |
| THDi | ≤3% at full load |
| Power Factor | -1 leading to +1 lagging |
| Max. PCS Efficiency | 98.6% |
| Cooling Method | Liquid Cooling |
| Operating Temperature | -30°C to +60°C |
| Relative Humidity | 0–95%, non-condensing |
| Maximum Altitude | 4,000m (>2,000m derating) |
| Isolation | Industrial Transformer Isolation |
| Protection Rating | IP54 |
| Cycle Life | 10,000 cycles @ 25°C, 0.5C/0.5C, 90% DOD, 80% EOL |
| Communication | CAN / Ethernet / RS485 |
| Display | LCD |
| Noise | <65dB at 1m |
| Configuration | PCS; MPPT Optional; STS Optional |
| Dimensions | 1100 × 1450 × 2360mm |
| Weight | 3.2t |
| Typical Expansion | 2–5 cabinets / 522.4kWh–1,306kWh |
Each cabinet provides 125kW rated output power and 261.2kWh battery capacity, creating a balanced 0.5P configuration for commercial and industrial energy applications.
Intelligent liquid cooling supports more controlled battery thermal management across changing loads and ambient conditions, helping maintain stable operation in demanding C&I applications.
The system provides AC480V rated grid voltage with 50Hz/60Hz operation and supports 3P 3W+PE or 3P 3W+N+PE AC access configurations.
A single cabinet provides 261.2kWh. Typical multi-cabinet configurations support 2–5 units, expanding total storage capacity from 522.4kWh to 1,306kWh.
For installations with more than three cabinets in parallel, project design should evaluate the requirement for an AC combiner cabinet.
The system uses 314Ah LiFePO₄ cells and is rated for 10,000 cycles at 25°C, 0.5C/0.5C, 90% DOD and 80% EOL.
The integrated PCS provides a specified maximum converter efficiency of 98.6%, supporting efficient energy conversion for frequent commercial charge and discharge operation.
Designed to operate from -30°C to +60°C, the system can support commercial energy storage projects across a wide range of North American climate conditions.
The enclosure carries an IP54 protection rating for commercial and industrial energy storage installations.
The platform supports CAN, Ethernet and RS485 communication and can be integrated into broader energy management architectures involving the grid, EMS, solar PV, wind generation, EV charging and commercial loads.
Commercial facilities across North America increasingly require energy storage for more than emergency backup. Electricity demand management, peak shaving, renewable energy integration and EV charging can all create different requirements for storage capacity, power and system control.
The 125kW/261.2kWh liquid-cooled C&I battery system provides a modular platform that can be deployed as a single cabinet or expanded into a multi-cabinet installation according to site requirements.
Typical applications include:
The system can store energy during lower-demand periods and discharge when facility demand increases, supporting peak shaving and valley filling strategies.
For commercial and industrial facilities with changing load profiles, energy storage can also be incorporated into broader load optimization and power regulation strategies.
Projects do not always need to begin at megawatt-hour scale.
A single cabinet provides 261.2kWh of energy storage. For larger C&I sites, the architecture supports typical configurations of:
This modular approach allows project developers to select a configuration based on facility loads and project requirements.
For systems using more than three cabinets in parallel, an AC combiner cabinet should be considered as part of the project design.
The U.S. version uses an AC-coupled architecture, making it suitable for projects where battery storage needs to be integrated with existing or separately designed generation and electrical infrastructure.
The system architecture can incorporate the utility grid, EMS, PV generation, wind power, EV charging infrastructure and C&I loads.
This provides flexibility for both standalone commercial energy storage deployments and renewable energy projects where multiple energy sources need to be coordinated.
The battery side uses 314Ah LFP cells in a 260S1P configuration, providing:
Rated Energy: 261.2kWh
Rated Voltage: 832V
Voltage Range: 728–936V
Charge/Discharge Rate: ≤0.5P (157A)
The system is specified for 10,000 cycles at 25°C, 0.5C/0.5C, 90% depth of discharge and 80% end-of-life capacity.
Commercial battery systems may experience frequent cycling and changing power demands throughout the day.
Liquid cooling provides active thermal management for the battery system, helping maintain controlled operating conditions during charging and discharging.
Combined with an operating temperature range of -30°C to +60°C, the system is designed for demanding commercial and industrial energy storage environments.
CAN, Ethernet and RS485 communication interfaces allow the battery storage system to communicate with compatible control and energy management equipment.
The system architecture supports integration with cloud and EMS platforms for coordinated operation between battery storage, grid power, renewable generation and site loads.
With 125kW output power, 261.2kWh capacity, AC480V architecture, liquid cooling, 10,000-cycle LFP battery technology and modular expansion up to 1.306MWh in the documented typical configuration, this system provides a flexible energy storage platform for U.S. and North American commercial energy projects.
1. Is this 125kW/261kWh BESS designed for the U.S. market?
Yes. The GSL-CESS-125K261 (US) is configured with AC480V for commercial and industrial energy storage applications targeting the U.S. and North American market.
2. How much energy does one cabinet store?
Each cabinet provides 261.2kWh of rated battery energy with 125kW rated output power, making it suitable for approximately 0.5P C&I energy storage applications.
3. Can multiple 261kWh battery cabinets be connected together?
Yes. The Datasheet provides typical configurations using 2–5 cabinets, increasing total storage capacity from 522.4kWh to 1,306kWh.
4. Can the system be expanded to 1MWh?
Yes. Four 261.2kWh cabinets provide approximately 1,044.8kWh, while five cabinets provide 1,306kWh, allowing the platform to support MWh-scale C&I projects.
5. Does a multi-cabinet installation require an AC combiner cabinet?
The Datasheet states that when more than three cabinets are connected in parallel, the project should consider whether an AC combiner cabinet is required. The final configuration should therefore be determined according to the site’s electrical design.
6. What battery cells are used?
The system uses 314Ah LiFePO₄ (LFP) cells in a 260S1P battery configuration, with 832V rated voltage and 728–936V operating voltage range.
7. What is the battery cycle life?
The specified cycle life is 10,000 cycles at 25°C, 0.5C charge/discharge, 90% DOD and 80% EOL.
8. What is the advantage of liquid cooling for commercial battery storage?
Liquid cooling provides active thermal management for the battery system and is particularly relevant to C&I applications involving frequent cycling and changing operating loads.
9. Can this system be used for peak shaving?
Yes. The Datasheet specifically identifies peak shaving, valley filling, emergency power reserve and load optimization control among the system functions.
10. Can the system integrate with solar PV and EV charging?
Yes. The documented system architecture includes PV, wind generation, grid, EMS, EV charging stations and C&I loads, making the system suitable for multi-energy commercial applications.
11. What communication interfaces are available?
The system supports CAN, Ethernet and RS485 communication interfaces and includes an LCD display.
12. What types of U.S. commercial projects can use this BESS?
Typical applications include factories, commercial buildings, shopping centers, data centers, EV charging stations, hospitals, renewable energy projects and other C&I facilities requiring peak shaving, load optimization or backup energy storage.
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