Energy Storage Systems

20ft/40ft Containerized Energy Storage System (1–5MWh, Liquid-Cooled BESS, IP67)

This containerized battery energy storage system (BESS) delivers utility- and commercial-scale lithium-ion storage in a standard 20ft/40ft container.

This containerized battery energy storage system (BESS) delivers utility- and commercial-scale lithium-ion storage in a standard 20ft/40ft container. Available from 1MWh to 5MWh with liquid cooling, an integrated BMS, and IP67 protection, it stores solar and grid energy for industrial and commercial peak-shaving, backup, and hybrid-grid applications.

  • Containerized BESS from 1MWh to 5MWh, scalable to multi-MW plants
  • Liquid-cooled lithium-ion battery racks for stable thermal performance
  • Integrated Battery Management System (BMS) with CAN / RS485 communication
  • Hybrid-grid ready, solar-powered, IP67 outdoor protection
  • Turnkey 20ft/40ft container for fast on-site deployment
Product TypeContainerized Energy Storage System (BESS)
Capacity1MWh / 2MWh / 3MWh / 5MWh
Battery TypeLithium Ion
CoolingLiquid Cooling
Protection ClassIP67
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Lead time typically 25–45 days after drawing approval · FAT welcome · Ships worldwide (EXW / FOB / CIF / DAP)

Technical specifications

Specifications of 20ft/40ft Containerized Energy Storage System (1–5MWh, Liquid-Cooled BESS, IP67)
ParameterValue
Product TypeContainerized Energy Storage System (BESS)
Battery TypeLithium Ion
Capacity1MWh / 2MWh / 3MWh / 5MWh
System Voltage768 V
Battery Configuration10P384S
CoolingLiquid Cooling
BMSIntegrated Battery Management System
Grid ConnectionHybrid Grid
Power SourceSolar Panel
CommunicationCAN / RS485
Protection ClassIP67
Container Dimension (L×W×H)12196 × 2438 × 2896 mm
Weight27.5 t
ApplicationIndustrial and Commercial Energy Storage
20ft/40ft Containerized Energy Storage System (1–5MWh, Liquid-Cooled BESS, IP67) — specification and nameplate detail
Specification and nameplate detail

Specifications are based on the standard configuration. Final ratings, dimensions, materials and packaging are confirmed on the approved drawing and order confirmation.

Features and construction

  • Standard container enclosure with liftable corner castings for transport
  • Vertical battery racks of stacked lithium modules with orange HV connectors and cable management
  • Integrated PCS and control cabinet section with monitoring and control panel
  • Liquid cooling loop for uniform cell temperature and long cycle life
  • Weatherproof IP67 outdoor construction
20ft/40ft Containerized Energy Storage System (1–5MWh, Liquid-Cooled BESS, IP67) — construction and materials detail
Construction and materials detail
20ft/40ft Containerized Energy Storage System (1–5MWh, Liquid-Cooled BESS, IP67) — internal structure
Internal structure
20ft/40ft Containerized Energy Storage System (1–5MWh, Liquid-Cooled BESS, IP67) — workmanship detail
Workmanship detail
20ft/40ft Containerized Energy Storage System (1–5MWh, Liquid-Cooled BESS, IP67) — safety and protection features
Safety and protection features

Typical applications

Ideal for industrial and commercial energy storage, solar + storage plants, peak shaving, load shifting, and hybrid-grid backup at MWh scale.

20ft/40ft Containerized Energy Storage System (1–5MWh, Liquid-Cooled BESS, IP67) — typical application
Typical application

Customisation options

Capacity (1–5MWh), system voltage, container size (20ft/40ft), grid configuration, and communication interface can be tailored to project requirements.

20ft/40ft Containerized Energy Storage System (1–5MWh, Liquid-Cooled BESS, IP67) — dimensions and layout
Dimensions and layout
20ft/40ft Containerized Energy Storage System (1–5MWh, Liquid-Cooled BESS, IP67) — customisation options
Customisation options

Ordering information

Please confirm required capacity, system voltage, container size, and grid connection type when ordering.

Specifications are based on the supplied product data. Final dimensions, materials, colors, and packaging are subject to the confirmed sample and order confirmation.

Standards and quality

Manufactured under an ISO 9001, ISO 14001 and ISO 45001 certified management system. Designs follow the IEC 60076 / IEC 62271 series as applicable, with ANSI/IEEE, GB and GOST variants available. Every unit passes routine testing before dispatch; type tests and customer or third-party witnessed factory acceptance tests can be arranged.

Frequently asked questions

What is the rated capacity of the 20ft/40ft Containerized Energy Storage System (1–5MWh, Liquid-Cooled BESS, IP67)?

The standard configuration is rated 1MWh / 2MWh / 3MWh / 5MWh. Other ratings in the same family can be built to order — tell us the load and we will confirm the nearest standard rating.

Which standards and certifications apply?

MARS operates an ISO 9001 / 14001 / 45001 certified factory and holds CE (ECM), UDEM, EAC and CQC approvals; every unit is routine-tested before dispatch and type or witnessed tests can be arranged.

Can this product be customised?

Capacity (1–5MWh), system voltage, container size (20ft/40ft), grid configuration, and communication interface can be tailored to project requirements.

What is the lead time and how is it shipped?

Typical lead time is 25–45 days after drawing approval for distribution equipment and 60–90 days for power transformers and containerised systems. Shipment is by sea from Shanghai on EXW, FOB, CIF or DAP terms with a full document pack.

Enquire about this product

Tell us the rating, voltage ratio, frequency, quantity and destination. A MARS engineer replies with a technical proposal and quotation within one working day.

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