Energy Storage Systems

Outdoor BESS 20FT Container, 1MW / 500kWh–1000kWh (Liquid-Cooled, IP67)

This outdoor 20FT containerized battery energy storage system delivers high-voltage lithium-ion storage for solar and grid applications.

This outdoor 20FT containerized battery energy storage system delivers high-voltage lithium-ion storage for solar and grid applications. Rated at 1MW power with 500kWh to 1000kWh (scalable to 5MWh) capacity, liquid cooling, an integrated BMS, and IP67 protection, it provides reliable hybrid-grid energy storage for industrial and commercial sites.

  • Outdoor 20FT container BESS, 1MW power
  • Capacity from 500kWh to 1000kWh (up to 5MWh)
  • High-voltage lithium-ion, liquid-cooled racks
  • Integrated BMS with CAN / RS485 communication
  • Hybrid-grid ready, solar-powered, IP67 outdoor rated
Product TypeOutdoor Containerized Energy Storage System (BESS)
Capacity500kWh – 1000kWh (up to 5MWh)
Rated Voltage768 V
Battery TypeLithium Ion (High Voltage)
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 Outdoor BESS 20FT Container, 1MW / 500kWh–1000kWh (Liquid-Cooled, IP67)
ParameterValue
Product TypeOutdoor Containerized Energy Storage System (BESS)
Battery TypeLithium Ion (High Voltage)
Power1 MW
Capacity500kWh – 1000kWh (up to 5MWh)
Rated 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 (20FT)
ApplicationIndustry and Commerce
Outdoor BESS 20FT Container, 1MW / 500kWh–1000kWh (Liquid-Cooled, 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

  • 20FT container with liftable corner castings for transport
  • Vertical battery racks of stacked lithium modules with orange HV connectors
  • Integrated PCS and control cabinet with monitoring and control panel
  • Liquid cooling loop for uniform cell temperature and long cycle life
  • Weatherproof IP67 outdoor enclosure
Outdoor BESS 20FT Container, 1MW / 500kWh–1000kWh (Liquid-Cooled, IP67) — construction and materials detail
Construction and materials detail
Outdoor BESS 20FT Container, 1MW / 500kWh–1000kWh (Liquid-Cooled, IP67) — internal structure
Internal structure
Outdoor BESS 20FT Container, 1MW / 500kWh–1000kWh (Liquid-Cooled, IP67) — workmanship detail
Workmanship detail
Outdoor BESS 20FT Container, 1MW / 500kWh–1000kWh (Liquid-Cooled, IP67) — safety and protection features
Safety and protection features

Typical applications

Ideal for outdoor solar-plus-storage plants, industrial and commercial energy storage, peak shaving, and hybrid-grid backup.

Outdoor BESS 20FT Container, 1MW / 500kWh–1000kWh (Liquid-Cooled, IP67) — typical application
Typical application

Customisation options

Power rating, capacity, system voltage, grid configuration, and communication interface can be tailored to project requirements.

Outdoor BESS 20FT Container, 1MW / 500kWh–1000kWh (Liquid-Cooled, IP67) — dimensions and layout
Dimensions and layout
Outdoor BESS 20FT Container, 1MW / 500kWh–1000kWh (Liquid-Cooled, IP67) — customisation options
Customisation options

Ordering information

Please confirm required power rating, capacity, system voltage, 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 Outdoor BESS 20FT Container, 1MW / 500kWh–1000kWh (Liquid-Cooled, IP67)?

The standard configuration is rated 500kWh – 1000kWh (up to 5MWh). Other ratings in the same family can be built to order — tell us the load and we will confirm the nearest standard rating.

What voltage ratio is available?

The standard unit is 768 V input. Voltage ratio, tapping range and vector group can be adjusted to your network; 50 Hz and 60 Hz designs are available.

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?

Power rating, capacity, system voltage, 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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