GSL ENERGY
Industrial Commercial Energy Storage Battery BESS
125kW 232.9kWh Liquid-Cooled AC Coupled Energy Storage System | GSL ENERGY Factory

CESS-125K232: Commercial-Scale AC-Coupled Liquid-Cooled Battery Storage System

GSL Energy’s CESS-125K232 is a 232.9kWh AC-coupled container energy storage system, designed for commercial and industrial use. Built with advanced LFP280Ah LiFePO₄ cells and liquid cooling technology, it delivers 125kW continuous output and supports up to 10 units in parallel. A reliable solution for peak shaving, microgrids, construction sites, and diesel generator replacement.
Product Description

Empower your energy strategy with GSL Energy’s CESS-125K232, a high-efficiency Liquid cooling Battery Energy Storage System (BESS) engineered for grid resilience, industrial optimization, and clean power deployment. Designed with advanced LiFePO₄ (LFP280Ah) battery cells, this modular, AC-coupled container solution delivers 125kW continuous power output and 232.9kWh usable energy, meeting the demands of modern commercial and industrial infrastructures.

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Key Technical Specifications

Model: CESS-125K232

Battery Type: LiFePO₄ (LFP280Ah)

Configuration: 260S1P (5 x 52S1P blocks)

Nominal Voltage: 832V

Voltage Range: 650V – 950V

Rated Energy Capacity: 232.9 kWh

Output Power: 125kW (AC)

Max Output Current: 145A

Cooling System: Liquid-cooled for optimal thermal control

Grid Connection: AC400V / 3P3W+PE or 3P3W+N+PE

Parallel Capability: Scalable up to 10 units (for > 2 MWh systems)

System Dimensions: 1376 × 1300 × 2050 mm

Weight: Approx. 3200 kg

Compliance & Certifications

Our system meets the highest international standards for safety, quality, and environmental reliability:

  • IEC/EN 62619 – Battery safety
  • IEC/EN 60730 & UL 60730 – Control systems
  • UN38.3 / UN3480 – Transportation safety
  • IEC/EN 62477 / IEC 61000 – Power electronics & EMC
  • GB/T 36276 – Chinese national energy storage standard

Where It Performs Best

  • Smart Factories & Warehouses – Smoothing load profiles and cutting peak demand charges
  • Remote or Off-grid Facilities – Reliable backup energy where grid power is limited or absent
  • Construction Sites – Clean, on-site power without diesel dependency
  • Microgrids & Hybrid Energy Systems – Balancing renewables with responsive storage
  • Backup for Telecom & Data Centers – Ensuring uptime during outages or grid instability

Why Choose the CESS-125K232?

  • Liquid Cooling: Superior thermal regulation enhances battery life and system efficiency
  • Flexible Integration: Easily pairs with inverters and EMS for grid-interactive or islanded operation
  • Factory-Backed Engineering: Manufactured by GSL Energy—ISO-certified, vertically integrated, and export-proven across 100+ countries
  • Plug & Perform: Pre-assembled and pre-tested, ready for fast field deployment
  • Scalable: Add capacity with up to 10 parallel units, simplifying multi-megawatt solutions

Contact Us

Looking to develop a scalable, reliable energy storage project?

Reach out to GSL Energy’s BESS team for engineering support, custom integration, and pricing:

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