Trex Energy launches 125 kW/261 kWh liquid-cooled battery energy storage system for C&I applications

Hyderabad-based Trex Energy has launched REX, a 125 kW/261 kWh fully integrated, single-cabinet battery energy storage system (BESS) for commercial and industrial (C&I) applications. The system combines liquid cooling, an energy management system (EMS), and integrated AC/DC architecture. It measures less than 1,700 mm × 1,350 mm × 2,200 mm and weighs under 3,500 kg.

The BESS features a 261 kWh lithium iron phosphate (LFP) battery with a nominal voltage of 832 V and a cell capacity of 314 Ah. It has a maximum DC voltage of 950 V and a maximum input active power of 125 kW. The system is designed for both on-grid and off-grid applications and can operate in ambient temperatures ranging from -20 C to 55 C. It carries an IP54 rating for protection against dust and water ingress.

“With liquid cooling, aerosol fire suppression, and intelligent cloud monitoring built into a single cabinet, we are giving our customers a system they can trust for decades of reliable operation,” said Roshan Shaik, technical director, Trex Energy. Liquid cooling maintains optimal cell temperatures across all conditions, significantly reducing degradation and extending the battery lifecycle compared to conventional air-cooled systems.

The company said that the BESS platform supports future capacity expansion through optional 100 kW maximum power point tracking (MPPT) and 200 kW static transfer switch (STS) modules. 

The system is equipped with aerosol fire suppression and protection against overcharge, over-discharge, short circuit, and thermal events — ensuring safety across all operating conditions.

Integrated energy management system (EMS) with 4G connectivity and a 7-inch HMI touch screen enables real-time monitoring, remote diagnostics, and fingertip cloud maintenance from anywhere. The system is compatible with PV input, AC bus, grid, loads, and EV charging infrastructure.