5MWh BESS Battery Container
The 5MWh BESS Battery Container is a liquid-cooled LFP battery storage container designed for utility-scale energy storage, renewable energy storage, grid-side storage, and large C&I energy storage projects.
Built with 314Ah LFP battery cells, wide-temperature operation, and integrated battery safety systems, this DC-side BESS battery container provides a reliable and practical energy storage platform for projects that need stable outdoor performance, easier transport, and long-term cost efficiency.
Optimized for Your Energy Needs
Wide-Temperature Outdoor Operation
Designed for demanding project environments, this liquid-cooled battery storage container supports operation from -40°C to 60°C. The wide temperature range helps improve site adaptability for outdoor energy storage projects in hot, cold, or changing climate conditions.
Liquid Cooling for Stable Performance
The liquid cooling system helps control battery temperature during charge and discharge, supporting battery life, system discharge performance, and long-term reliability. With a 50% water and 50% glycol coolant design, the container is built for continuous outdoor energy storage operation.
Integrated Safety and Battery Protection
The container integrates BMS monitoring, thermal management, multi-level active fire protection, and dedicated battery protection systems. These safety layers help reduce operational risk and support reliable performance in utility-scale and large C&I battery storage projects.
PCS-Ready DC-Side Design
As a DC-side BESS battery container, the system does not include PCS. It can be matched with external PCS, transformer, and grid-side equipment according to project voltage, power output, and grid connection requirements, making it flexible for different battery energy storage system designs.
5MWh BESS Battery Container Specification
| System Parameters | |
| Battery Chemistry | LFP |
| Module Model | LFP314-1P52S |
| Module Quantity | 96 pcs (12 × 8) |
| Configuration | 12P416S |
| Nominal Energy | 5015.96kWh |
| Cooling Method | Liquid Cooling |
| Coolant | 50% Water / 50% Glycol |
| Gravimetric Energy Density | ＞111 Wh/kg |
| Volumetric Energy Density | ＞90 Wh/L |
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CAN / RS485 / Ethernet |
| Electrical Parameters | |
| Nominal Voltage | 1331.2V |
| Operating Voltage Range | 1123.2–1497.6V |
| Delivered Nominal SOC | 27% |
| Rated Charge / Discharge Rate | 0.5P / 0.5P |
| Energy Efficiency | ＞94% |
| Environmental Conditions | |
| Operating Temperature | -40°C to 60°C |
| Recommended Storage Temperature | -20°C to 35°C |
| Application Altitude | ≤4000m |
| Humidity | 0–95%, non-condensing |
| Mechanical Parameters | |
| Dimensions (L × W × H) | 6220 × 2590 × 3000mm |
| Weight | ＜45000kg |
| Protection Rating | IP55 |
| Certifications | |
| Product Certification / Report | GB/T 36276 |
| Company Certifications | ISO 9001, ISO 14001, ISO 45001 |
Polinovel 5MWh BESS Battery Container for Utility & C&I Projects
The Polinovel 5MWh BESS Battery Container delivers 5015.96 kWh (5.016 MWh) of liquid-cooled LFP storage in a single DC-side container. Built with 314Ah LFP cells in a 12P416S configuration (96 modules), a 50% water / 50% glycol liquid-cooling system and an IP55 enclosure rated for −40°C to 60°C operation, it is engineered as a project-ready block for utility-scale plant and commercial & industrial storage, as well as solar and wind projects
Key Advantages of the 5MWh BESS Battery Container
High-Density 5.016MWh LFP
96 LFP314-1P52S modules (12P416S) provide 5015.96 kWh with a gravimetric density above 111 Wh/kg and volumetric density above 90 Wh/L - concentrating utility-grade capacity into one container footprint.
Liquid Cooling for Stable Operation
A 50% water / 50% glycol liquid cooling system controls battery temperature through charge and discharge, supporting battery life and a round-trip energy efficiency above 94%.
Wide-Temperature Outdoor Operation
Rated for −40°C to 60°C, IP55 protection, altitude up to 4000 m and 0–95% non-condensing humidity, the container is built for demanding outdoor sites in hot, cold or changing climates.
Integrated Safety & Battery Protection
BMS monitoring, thermal management, multi-level active fire protection and dedicated battery protection work together for safer container operation; the product is tested to GB/T 36276.
Defined Electrical Behaviour
1331.2 V nominal voltage (1123.2–1497.6 V range), 0.5P / 0.5P rated charge/discharge and CAN / RS485 / Ethernet communication give engineers clear, verifiable data for system design and PCS matching.
DC-Side, PCS-Ready Design
As a DC-side battery container the system pairs with an external PCS - see how a power conversion system (PCS) completes the storage architecture
Applications of the 5MWh BESS Battery Container
Suited to solar, wind, grid-side and large C&I energy storage, the 5MWh BESS Battery Container supports a range of project roles:
Renewable Integration
Stores surplus solar and wind output and smooths delivery, assisting new-energy grid connection for PV and wind developers.
Peak Shaving
Discharging during high-tariff hours cuts demand charges.
Frequency Regulation
Fast response supports grid stability and ancillary-service value in frequency regulation applications.
Microgrid & Load Shifting
Anchors microgrid battery storage and enables load shifting from low-cost to high-value periods.
EV Charging Support
Buffers high-power demand where distribution capacity is tight, pairing well with EV chargers at charging hubs.
Grid-Side Storage
Provides capacity and flexibility for utilities and developers, part of Polinovel's wider energy storage solutions.
Polinovel - Manufacturer & OEM/ODM Supply
Shenzhen Polinovel Tech Co., Ltd manufactures the 5MWh BESS Battery Container as a factory-direct BESS container manufacturer and OEM/ODM partner. Production is backed by ISO 9001, ISO 14001 and ISO 45001 company certifications, with the product tested to GB/T 36276. Beyond supply, Polinovel works with your technical team to confirm configuration, supports OEM/ODM across capacity, cell selection, cooling, fire strategy and enclosure, and discusses MOQ, lead time and packaging per project - so EPCs, IPPs, integrators and distributors sourcing across the full containerized BESS range can specify, verify and quote with confidence.
5MWh BESS Battery Container - FAQ
Q: What is the nominal capacity?
A: The 5MWh BESS Battery Container has a nominal energy of 5015.96 kWh (5.016 MWh), built from 96 LFP314-1P52S modules in a 12P416S configuration.
Q: Is the system liquid-cooled or air-cooled?
A: It is liquid-cooled, using a 50% water / 50% glycol coolant to control battery temperature during charge and discharge and support long-term outdoor operation.
Q: What is the operating temperature range?
A: The container operates from −40°C to 60°C, with recommended storage from −20°C to 35°C, altitude up to 4000 m and 0–95% non-condensing humidity.
Q: Does it include a PCS?
A: No. It is a DC-side battery container without a built-in PCS, designed to be matched with an external PCS, transformer and grid-side equipment according to project voltage, power and grid-connection needs.
Q: Which communication interfaces are supported?
A: The system supports CAN, RS485 and Ethernet communication, with 1331.2 V nominal voltage (1123.2–1497.6 V) and 0.5P / 0.5P rated charge and discharge.
Q: What certifications does it have?
A: The product is tested to GB/T 36276, and Polinovel holds ISO 9001, ISO 14001 and ISO 45001 company certifications. Additional certification requirements can be discussed per project and destination market.
Q: What are the container dimensions and weight?
A: Dimensions are 6220 × 2590 × 3000 mm with a weight under 45000 kg and IP55 protection.
Get a Quote for the 5MWh BESS Battery Container
Share your project location, capacity requirement, application and grid conditions, and our team will recommend the right configuration and external PCS matching for the 5MWh BESS Battery Container, with datasheet support so you can specify and quote with confidence.
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