The 20ft Liquid-Cooled Storage Container BESS by WELTRUS is a high-capacity, modular energy storage solution designed for utility-scale and industrial applications. Available in 3.35MWh and 5MWh capacities, it integrates high-quality LFP batteries, liquid cooling, fire suppression, and EMS in a robust outdoor-rated container. This system enables grid support functions such as peak shaving, frequency regulation, and load shifting. The pre-installed delivery reduces commissioning time, while the intelligent management platform ensures optimal performance, safety, and extended service life.

Specifications:

Parameter	3.35MWh Model	5MWh Model
Battery Type	LFP 280Ah	LFP 314Ah
Rated DC Voltage	1331.2V	1331.2V
Charge/Discharge C-rate	0.5P	0.5P
Rated DC Capacity	3.35MWh	5MWh
DC Charging/Discharging Efficiency	93–95%	93–95%
Cooling Method	Liquid cooling	Liquid cooling
Fire Protection	Perfluorohexanone + Water suppression	Perfluorohexanone + Water suppression
Protection Level	IP54	IP54
Dimensions (W×D×H)	6058 × 2500 × 2896 mm	6250 × 2550 × 3100 mm
Weight	~35t	~38t
Operating Temp	-20°C to 55°C	-20°C to 55°C
Communication	CAN, RS485, Ethernet	CAN, RS485, Ethernet
Protocols	Modbus RTU, Modbus TCP/IP	Modbus RTU, Modbus TCP/IP
Certifications	UL9540/UL9540A, CE, IEC, KC, KBIA	UL9540/UL9540A, CE, IEC, KC, KBIA

Typical Applications:

• Utility-scale energy storage for grid balancing
• Peak shaving and demand charge reduction
• Renewable energy integration and smoothing
• Frequency regulation and power dispatch
• Backup power for large industrial facilities

 

Packing List:

• 1 × 20ft Liquid-Cooled Storage Container ESS (3.35MWh or 5MWh)
• Integrated EMS, BMS, liquid cooling, and fire protection systems
• Installation manual & warranty documents

About Manufacturer:

WELTRUS (Hangzhou Weltrus New Energy Technology Co., Ltd.) is part of the Welfull Group, established in 1993, with an annual operating income exceeding 5.6 billion yuan. The company leverages its strong industrial and financial foundation in Zhejiang Province, China. It stands at the forefront of clean energy development with core competencies in photovoltaics, new energy vehicles, and energy storage applications. R&D & Innovation: Weltrus brings extensive R&D experience across several sectors—including energy storage, photovoltaic technology, new energy vehicle systems. This deep technical expertise drives continuous product innovation and upgrades.