Products Description
Modular, safety-focused battery storage for grid-tied and off-grid projects, built in a standard ISO 20-foot container.
This 20ft container energy storage system is a factory-integrated battery energy storage system (BESS) with 500 kWh to 2 MWh of configurable capacity and 250 kW to 1,000 kW of rated output power. It ships in a standard ISO 20-foot container (6058 × 2438 × 2591 mm), so it moves by road, rail and sea like any other container and can be placed on site with ordinary lifting equipment. It is used for peak shaving, renewable energy storage, commercial and industrial load management, microgrids and backup power.
Product Overview
The system packs the battery clusters, battery management system (BMS), power conversion system (PCS), energy management system (EMS), thermal management, fire suppression and low-voltage distribution into one weatherproof enclosure. Customers receive a single unit that is wired, configured and tested before it leaves the factory, instead of assembling separate cabinets on site.
Three design choices shape the product:
Standard container format. Dimensions follow the ISO 20ft container, which keeps shipping, customs handling, crane selection and foundation design predictable.
Modular internal structure. Battery modules and clusters can be added, replaced or serviced without redesigning the whole system, and capacity can be set to match each project.
Defined operating scope. The system is intended for stationary storage in grid-side, commercial, industrial, microgrid and telecom backup applications. Project-specific limits are confirmed during the technical review.
Core Advantages
Flexible deployment
A standard ISO footprint of 6058 mm × 2438 mm means the unit fits existing container handling and transport infrastructure. Capacity, power rating and cell type are selected per project, so one platform covers small commercial sites and larger utility-side installations.
Modular design
Standardized battery modules and clusters make expansion and maintenance simpler. Operators can adjust capacity and configuration to demand, and several containers can run in parallel when a project outgrows a single unit.
Multi-layer safety
Real-time BMS monitoring, an automatic gas fire suppression system and a temperature control system work together to protect the cells and the enclosure. Details are listed in the Safety and Certifications section below.
Cost-effectiveness
Series production lowers the unit cost of each container, and long cycle life spreads the investment over many years of operation. For load shifting and peak shaving projects, this helps reduce electricity expenses over the system's service life.
Main Technical Specifications
|
Parameter |
Specification |
|
Container size (L × W × H) |
6058 mm × 2438 mm × 2591 mm |
|
Total capacity |
500 kWh – 2 MWh (configurable, customizable) |
|
Rated voltage |
800 V DC (customizable) |
|
Rated output power |
250 kW – 1,000 kW (customizable) |
|
Cell type |
LFP (LiFePO4) or NCM (Nickel Cobalt Manganese), optional |
|
Battery cluster configuration |
Battery cluster + module structure |
|
BMS |
Hierarchical management; supports Modbus TCP/IP and CAN communication |
|
Inverter (PCS) |
Bidirectional converter; supports grid-tied and off-grid modes |
|
EMS |
Supports remote monitoring and strategy optimization |
|
Cooling system |
Industrial-grade air conditioning; air-cooled or liquid-cooled optional |
|
Fire protection |
Automatic gas suppression (e.g., FM-200, NOVEC 1230) |
|
Protection rating |
IP54 (outdoor type) |
|
Safety certification |
Complies with IEC 62619, UL 9540, UN 38.3 |
|
Operating temperature |
-20 °C to +55 °C |
|
Service life |
> 6,000 cycles at 80% DoD |
Specifications are subject to project configuration and may be updated without notice. Final parameters are stated in the signed technical agreement.
Battery System and Key Subsystems
Battery system
Cells: Lithium iron phosphate (LFP) as the standard option; NCM available on request.
Modules: Standardized modular design for easier maintenance and replacement.
Battery clusters: Each cluster is fitted with battery management units (BMUs) that report to the system-level BMS.
Battery management system (BMS)
Cell voltage and temperature monitoring
Current detection and protection
Intelligent state-of-charge (SOC) and state-of-health (SOH) estimation
Hierarchical architecture with Modbus TCP/IP and CAN communication
Energy management system (EMS)
Energy dispatch and optimization
Data logging and analytics
Remote monitoring and alarm notification
Power conversion system (PCS)
Bidirectional DC/AC power flow for charging and discharging
Black start and island-mode switching support
Grid compliance with GB/T 36558 and IEEE 1547
Container structure and auxiliary systems
Standard ISO 20ft container with reinforced, anti-corrosion treatment
Internal thermal insulation coating
Fire-rated ventilation windows and emergency lighting
Industrial-grade HVAC
Fire detection and suppression system
Internal low-voltage power distribution
Security monitoring system
Safety and Certifications
Safety is handled at the cell, cluster and container level instead of relying on a single protective device.
Monitoring: The BMS tracks cell voltage, temperature and current in real time and acts on abnormal readings.
Fire protection: A detection system is paired with automatic gas suppression, such as FM-200 or NOVEC 1230.
Thermal control: Industrial HVAC keeps the interior within its working range; air-cooled or liquid-cooled configurations are available.
Enclosure: IP54 protection for outdoor installation, with reinforced anti-corrosion treatment on the container.
|
Standard |
Scope |
|
IEC 62619 |
Safety requirements for secondary lithium cells and batteries in industrial applications |
|
UL 9540 |
Safety standard for energy storage systems and equipment |
|
UN 38.3 |
Transport testing for lithium batteries |
|
GB/T 36558 |
Chinese national standard for electrochemical energy storage systems connected to the grid |
|
IEEE 1547 |
Interconnection and interoperability requirements for distributed energy resources |
Certificate scope can differ by cell type and configuration. Copies of the certificates that apply to your selected configuration are provided during quotation.
Application Scenarios
|
Application |
How the system is used |
|
Renewable energy integration |
Stores wind and PV output and releases it when generation drops or demand rises. |
|
Grid-side ancillary services |
Provides frequency regulation and peak regulation using bidirectional PCS response. |
|
Commercial and industrial load management |
Shifts consumption away from peak-rate periods and reduces demand charges. |
|
Microgrids and off-grid power stations |
Runs in island mode and supports black start where the grid is weak or absent. |
|
Telecom base station backup |
Supplies standby power for remote or critical communication sites. |
|
Technical add-ons |
Additional functions can be specified per project during technical review. |
Features and Capabilities
Highly integrated, modular design
Grid-tied and off-grid operation
High-efficiency energy management
Multi-layer safety protection
Flexible capacity and configuration
Multi-container parallel capability
Customization and Expansion
Each project has its own power profile, site conditions and grid requirements. The following items can be adjusted:
|
Item |
Range or options |
|
Capacity |
500 kWh – 2 MWh |
|
Rated output power |
250 kW – 1,000 kW |
|
Rated DC voltage |
800 V DC standard; customizable |
|
Cell chemistry |
LFP or NCM |
|
Cooling method |
Industrial air conditioning, air-cooled or liquid-cooled |
|
Fire suppression agent |
FM-200, NOVEC 1230 or equivalent gas system |
|
Scale |
Multiple containers operated in parallel for larger projects |
Large projects can start with one container and add more later, which lets buyers phase their capital spending and match storage to actual load growth.
Logistics, Installation and Maintenance
Transport and lifting
The standard ISO 20ft size works with common container trucks, rail wagons, vessels and cranes.
Installation
Because the system is integrated and tested at the factory, site work centers on foundation, grid connection and commissioning.
Maintenance
Modular battery components can be serviced individually, and the BMS flags faults at module and cluster level.
Remote operations
Remote monitoring, data logging and alarm notification in the EMS let operators track performance without visiting the site.
Information for Procurement Teams
The specification sheet gives the core parameters. The points below put those numbers into terms that are useful when comparing suppliers. They are calculated from the published figures only.
Service life and lifecycle value
The system is rated for more than 6,000 cycles at 80% depth of discharge. At one full cycle per day, that equals roughly 16 years of daily operation. As a reference, a container configured at 1 MWh would deliver about 4,800 MWh of cumulative discharged energy over 6,000 cycles at 80% DoD (1 MWh × 0.8 × 6,000). Actual life depends on duty cycle, temperature, charge rate and the warranty terms in the contract.
Environmental range
The stated operating temperature is -20 °C to +55 °C, with IP54 protection for outdoor use. Sites outside this range, or with heavy dust, salt air or high altitude, should be raised with the technical team before ordering.
Footprint
A single container occupies about 14.8 m² (6.058 m × 2.438 m), before clearances for doors, HVAC airflow and maintenance access.
Grid and system compatibility
The bidirectional PCS supports grid-tied and off-grid modes, and the system lists conformity with GB/T 36558 and IEEE 1547. Communication is through Modbus TCP/IP and CAN, which suits most site controllers and SCADA platforms. Interface details for a specific grid code or microgrid controller are confirmed in the project datasheet.
Items to request with your quotation
Round-trip efficiency and auxiliary power consumption for the selected configuration
Warranty terms, including capacity retention over time
Certificate copies and test reports for the chosen cell type
Cooling option comparison (air-cooled vs. liquid-cooled) for your climate
Delivery lead time, commissioning scope and spare parts list
FAQ
Q: What is a 20ft container energy storage system?
A: It is a battery energy storage system built inside a standard 20-foot ISO shipping container. Batteries, BMS, PCS, EMS, cooling and fire protection are installed and tested at the factory, then delivered as one unit.
Q: How much energy can one 20ft container store?
A: This model is configurable from 500 kWh to 2 MWh, with rated output power of 250 kW to 1,000 kW.
Q: Which battery chemistries are available?
A: LFP (lithium iron phosphate) and NCM (nickel cobalt manganese). The choice depends on project priorities such as safety margin, energy density and cost.
Q: Can it operate off-grid?
A: Yes. The bidirectional PCS supports both grid-tied and off-grid operation, including island-mode switching and black start.
Q: What is its protection rating and temperature range?
A: IP54 for outdoor use, with an operating range of -20 °C to +55 °C.
Q: Which standards does it meet?
A: IEC 62619, UL 9540 and UN 38.3 for safety and transport, and GB/T 36558 and IEEE 1547 for grid connection.
Q: Can several containers be connected together?
A: Yes. Multiple containers can run in parallel to reach larger capacity.
Q: What is the expected cycle life?
A: More than 6,000 cycles at 80% depth of discharge.
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