ALL-IN-ONE ESS CONTAINER > LIQUID-COOLED BATTERY

Liquid-cooled Battery Containers for C&I and Utility-scale ESS Projects

SUNPAL ESS liquid-cooled battery containers are available from 723 kWh to 5.015 MWh, integrating 314Ah LFP battery cells, intelligent thermal management, fire protection, and IP55 outdoor enclosures for commercial, industrial, and grid-scale energy storage projects. Built for EPCs, distributors, wholesalers, and project owners seeking reliable BESS supply, scalable deployment, and optimized energy storage cost.

2 Models

Available

723 kWh–5.015 MWh

Capacity Range

314Ah

LFP Battery Cells

8,000+

Cycle Life

≥88%

System Efficiency

IP55

Outdoor Protection

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  • Compact white 10ft containerized battery energy storage system with integrated control box, ventilation louvers, and access doors.
  • Sunpal ECO-B20FT5015LP-2N white 20ft containerized battery energy storage system (BESS) unit featuring integrated cooling fans.
Sunpal ECO-B20FT5015LP-2N 20ft containerized battery energy storage system installed on an elevated concrete platform in a coastal area with wind turbines in the background.

ECO-B20FT5015LP-2N

CubePal ECO-B20FT5015LP-2N

  • 5015 kWh

    Storage Capacity

  • 100%

    DoD Usable Energy

  • 8,000+

    Cycles Battery Life

LIQUID-COOLED BATTERY CONTAINER

CUBEPAL SERIES

UN3536

IEC62619

IEC63056

IEC62477-1

IEC61000-6-2/4

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Sunpal ECO-B10FT723LP-2N 10ft containerized battery energy storage system installed on a concrete foundation along a coastal road with offshore wind turbines in the distance.

ECO-B10FT723LP-2N

CubePal ECO-B10FT723LP-2N

  • 723 kWh

    Energy Capacity

  • 375 kW

    Rated Power

  • ≥88%

    Conversion Efficiency

LIQUID-COOLED BATTERY CONTAINER

CUBEPAL SERIES

UN3536

IEC62619

IEC63056

UL9540A

IEC62477

IEC61000

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[ SYSTEM ARCHITECTURE ]

Typical Connection for Liquid-cooled Battery Container Systems

CubePal liquid-cooled battery containers can be integrated with solar PV, wind power, PCS, transformers, EMS, generators, and utility grids to build complete containerized BESS solutions. The modular design supports EPC projects, wholesale distribution, and scalable deployment for commercial, industrial, and utility-scale energy storage with optimized system cost and reliable power control.

3D isometric diagram illustrating a liquid-cooled battery container system integrated with an boost converter station, on-grid inverter, solar array, grid interconnection, industrial load, and central EMS control.
  • Utility-scale battery storage containers integrated with solar PV panels, wind turbines, and high-voltage power lines.

    Solar PV + Energy Storage

  • Wind Power Integration

  • Aerial view of a commercial plaza building rooftop fully installed with rooftop solar panels for commercial energy storage.

    C&I Battery Energy Storage

  • Utility-scale battery energy storage site with rows of white containers next to a solar farm, wind turbines, and a power substation.

    Peak Shaving & Load Shifting

  • Compact outdoor battery energy storage cabinet connected to a solar-powered EV charging station canopy with parked vehicles.

    EV Charging Station ESS

  • Large-scale containerized battery energy storage facility positioned directly adjacent to high-voltage transmission towers and a power substation.

    Utility Grid Support

[ TECHNICAL PRINCIPLES ]

Why Choose a Liquid-cooled Battery Container?

Cutaway view of a liquid-cooled battery container highlighting internal battery racks and glowing coolant flow channels.

Precision Thermal Control for High-capacity BESS Projects

A liquid-cooled battery container uses circulating coolant to transfer heat away from LFP battery modules more evenly than traditional air cooling. By keeping cell temperature differences within a tighter range, SUNPAL ESS containerized BESS helps improve battery consistency, reduce auxiliary power consumption, lower operating noise, and support long-term safety for C&I and utility-scale energy storage projects. It is a practical choice for EPC contractors, distributors, and wholesale buyers looking for stable performance and optimized ESS lifecycle cost.

[ DIGITAL ENERGY MANAGEMENT ]

3S Intelligent Control for Liquid-cooled BESS Containers

SUNPAL ESS liquid-cooled battery containers integrate BMS, EMS, and optional external PCS into a coordinated 3S architecture for safer battery operation and smarter energy dispatch. The three-tier BMS monitors battery cells, modules, and system-level status in real time, while EMS optimizes charging, discharging, peak shaving, backup power, and renewable energy integration for C&I and utility-scale ESS projects.

  • ESS Cloud Running Monitor dashboard displaying real-time power analytics, earnings, charge/discharge statistics, and operational alarms.
  • System control architecture diagram illustrating power flow and communication flow between EMS, BMS, PCS, Battery Rack, and Utility Grid.
  • Four smartphone screens displaying the mobile EMS interface for real-time BESS monitoring, operational status, safety diagnostics, and power curve analytics.

[ PRODUCT COMPOSITION ]

Core Components of Liquid-cooled Battery Containers

SUNPAL ESS liquid-cooled battery containers combine LFP battery packs, high-voltage control, air-cooled auxiliary systems, and intelligent liquid cooling into one containerized BESS platform. The integrated design helps EPCs, distributors, and wholesale buyers achieve stable performance, safer power distribution, faster deployment, and optimized energy storage system cost.

Battery Pack

HV Box

Air-cooled AC

Liquid Cooling Chiller

    Array of black modular battery packs with orange high-voltage quick-connect terminals arranged on a platform against a dark background.

    314Ah LiFePO4 Battery Pack

    Built with Grade-A 314Ah LiFePO4 cells, the modular battery pack delivers high energy density, stable cycling performance, and real-time battery monitoring. Its protected pack structure supports long-term operation in C&I and utility-scale battery energy storage projects.

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    Two black Sunpal high-voltage control boxes with status indicators, circuit switches, and interface ports set on a digital circuit board background.

    High-voltage Control Box

    The HV box manages DC power distribution, voltage/current monitoring, insulation protection, and system-level safety control. It enables reliable energy transmission between battery packs and PCS for high-voltage liquid-cooled ESS container applications.

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    Industrial air-cooled air conditioning unit featuring four large cooling fans mounted on a white vertical cabinet against a dark gradient background.

    Auxiliary Air Cooling Unit

    The air-cooled AC system supports electrical compartment temperature control and auxiliary equipment protection. It helps maintain stable operation for PCS, EMS, and control components inside containerized energy storage systems.

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    Two white liquid cooling chiller units, one vertical and one horizontal, with mesh ventilation panels on a high-tech circuit background.

    Intelligent Liquid Cooling Chiller

    The liquid cooling chiller uses circulating coolant and variable-frequency control to remove battery heat efficiently. By reducing cell temperature differences, it improves battery consistency, system efficiency, safety, and long-term BESS lifecycle value.

    View Details →

Model

ECO-B10FT723LP-2N

Nominal Energy

≥48.23kWh

Rated Voltage

153.6V

Battery Module Capacity

314Ah

Number of Battery Cells

48

Cell Series-Parallel Mode

1P48S

Rated Charge Power / Rate

0.5P

Rated Discharge Power / Rate

0.5P

Charge Cut-off Voltage

172.8V

Discharge Cut-off Voltage

134.4V

Depth of Discharge (DoD)

95% DOD

Cell Voltage Range

2.8–3.6V

Product Dimensions (W × D × H)

800 × 1063 × 247.5mm

Communication Interface

CAN

Protection Rating

IP65

Product Weight

Approx. 326kg

Model

ECO-B20FT5015LP-2N

Nominal Energy

104.499kWh

Rated Voltage

DC332.8V

Voltage Range

DC291.2 ~ 374.4V

Number of Battery Cells

104

Cell Series-Parallel Mode

1P104S

Rated Charge Power / Rate

0.5P

Rated Discharge Power / Rate

0.5P

Cell Voltage Range

Cell voltage 2.8V ~ 3.6V

Product Dimensions (W × D × H)

790 × 2180 × 249mm

Communication Interface

CAN

Fire Protection Method

Aerosol

Protection Rating

IP65

Product Weight

Approx. 690kg

Model

ECO-B10FT723LP-2N

Dimensions (W × D × H)

740 × 800 × 225mm

Weight

Approx. 45kg

Power Input

AC 220V

Rated High-Voltage Output

DC 832V

High-Voltage Output Range

DC 728V~DC 936V

Operating Temperature

-25~55°C

Protection Level / IP Rating

IP20

Model

ECO-B20FT5015LP-2N

Dimensions (W × D × H)

700 × 850 × 223mm

Weight

95kg

Power Input

AC220V

Rated Operating Voltage

DC1331.2V

Rated Operating Current

250A

Operating Temperature

-20 ~ 55°C

Operating Humidity

≤95%RH, no condensation

Communication Interface

CAN, LAN

Protection Level / IP Rating

IP20


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Model

ECO-B10FT723LP-2N

Operating Voltage Range

EMW100HDNC1A: 480V (-15% to +10%); EMW100HDNC1B: 380V ± 10%

Operating Ambient Temperature Range

-30°C to +55°C

Operating Relative Humidity Range

5%–95%

Storage Environment Temperature Range

-40°C to +70°C

Storage Environment Relative Humidity Range

5%–95%

Transport Performance

Adaptable to land, air, sea, and other transportation methods

Working Altitude

0–4000 m

Altitude Derating

Performance decreases by 5% for every 1000 m increase in altitude between 2000 m and 4000 m

Unit Dimensions (W × D × H)

800 × 350 × 1750 mm (with flange)

Protection Level

IPX5 (outdoor side only)

Protection Level Notes

IPX5 applies only to the outdoor side. The indoor and outdoor sections of the chiller are shown in Figure 3-3.

Rated Coolant Flow Rate

72 L/min

Operating Temperature Range of Coolant

5°C–35°C

Operating Pressure Range of Coolant

0.25 bar–3 bar

Maximum Inlet Pressure

0.12 MPa

Model

ECO-B20FT5015LP-2N

Dimensions, Weight & Installation

Overall Dimensions (W × D × H)

1200 × 440 × 2400 mm

Weight (Excluding Coolant)

471 kg

Installation Method

Floor-mounted

Application Environment

Outdoor

Environmental Protection & Performance

Operating Ambient Temperature Range

-30°C to +55°C

Storage Ambient Temperature Range

-40°C to +70°C

Operating Altitude

0–4000 m

Altitude Derating

5% power derating for every 1000 m increase above 1000 m

Noise Level

≤ 80 dB(A)

IP Protection Rating

IPX5

Anti-corrosion Grade

C5-M

Refrigerant

R32

Coolant

50% Ethylene Glycol Aqueous Solution

RoHS 2.0 Certification

Yes

CE Certification

Yes

Cooling / Heating Capacity

Cooling Capacity (@ W18/L35)

60 kW

Heating Capacity (@ Tu = 10°C)

24 kW

Outlet Water Temperature

18°C

Circulating Water Flow Rate

Rated Circulating Water Flow Rate

500 L/min @ 150 kPa

Power Consumption

Cooling Input Power (@ W18/L35)

27.8 kW

Heating Input Power (@ Tu = 10°C)

24 kW

Self-circulation Mode Power (Pump Only)

0.74 kW

Maximum Power Consumption

30 kW

Power Supply

Rated Operating Voltage

380–415 V, 3-phase, 50/60 Hz

Supported Voltage Range

380–415 V ± 15%, 3-phase, 50/60 Hz ± 3 Hz

Maximum Operating Current

72 A

[ SAFETY ARCHITECTURE ]

Five-Level Safety Protection, From Battery Pack to Full Container

Battery safety is usually the first question project owners ask about large-scale energy storage — and the liquid-cooled battery container answers it with five independent layers of protection working together: intelligent monitoring, early-stage fault detection, and active fire suppression at both the pack and cabinet level. Each layer is designed to catch a different failure mode, so a single point of failure doesn't compromise the whole system.

Black pack-level BMS control module with wiring harness and industrial multi-pin connector set against a reflective gradient backdrop.

Pack-Level BMS

Continuously monitors cell voltage, current, and temperature while actively balancing battery packs in real time. Intelligent protection algorithms detect and respond to overcharge, over-discharge, overheating, and other abnormal conditions before they escalate.

  • Black NH FIRE aerosol fire extinguishing generator unit with specification label mounted inside a BESS battery cabinet.

    Pack-Level Aerosol Fire Suppression

    Each battery pack carries its own independent aerosol fire suppression unit, allowing a rapid, localized response to thermal events before they can spread to neighboring battery modules.

  • Two black aerosol fire extinguishing devices wall-mounted inside an energy storage cabinet with connected wiring.

    Cabinet-Level Aerosol Protection

    A dedicated cabinet-level aerosol system provides a second layer of fire suppression across the entire enclosure, reducing the operational impact of any unexpected fault.

  • Stainless steel Storz fire water connection coupling with a protective cap and chain mounted on a white container wall.

    Water Fire Protection

    An integrated water-based fire suppression system adds a further layer of emergency response, helping control heat propagation and supporting comprehensive fire mitigation inside the container.

  • Ceiling-mounted smoke detectors, air sampling sensors, and insulated piping installed inside a battery cabinet ceiling.

    Smoke & Temperature Detection

    High-sensitivity smoke and temperature sensors continuously track internal conditions, triggering early warnings and automatic protective actions the moment a potential risk is detected.

[ STRATEGIC PARTNERS ]

Powered by Trusted Global Component Brands

Sourcing decisions matter just as much as system design. Every core component in the liquid-cooled battery container — from battery cells and optional external PCS to circuit protection and thermal management hardware — comes from established industry brands, so project owners get dependable performance, verifiable safety data, and long-term parts availability, not unproven house-brand substitutes.

Hexagonal grid displaying supply chain partner logos including ABB, Schneider Electric, Envicool, and HTHIUM alongside images of electrical components.

[ KNOWLEDGE CENTER ]

Frequently Asked Questions

Everything You Need to Know Before Choosing a Liquid-cooled Battery Container

What is a liquid-cooled battery container?

A liquid-cooled battery container is a containerized battery energy storage system (BESS) that combines battery racks, liquid thermal management, BMS, power distribution, and fire safety systems inside one enclosure, purpose-built for large-scale commercial, industrial, and utility energy storage projects.

What are the advantages of liquid cooling over air cooling in a battery container?

Liquid cooling removes heat through direct coolant circulation, giving more efficient heat dissipation and far better temperature uniformity than traditional air cooling. In practice, this means more consistent cell performance, less thermal stress on the battery, and a longer usable system life.

What battery cells are used inside the liquid-cooled battery container?

The CubePal Series uses Grade-A 314Ah LiFePO₄ prismatic cells sourced from CATL, EVE, HITHIUM, and REPT, chosen for high energy density, strong thermal stability, and reliable cycle performance in long-duration energy storage applications.

What battery container capacity options does SUNPAL ESS offer?

The CubePal Series is available from 723kWh up to 5.015MWh per container, covering commercial, industrial, and utility-scale projects with a single, standardized platform instead of a fully custom build.

How safe is a liquid-cooled battery energy storage container?

Safety is built in at multiple levels — intelligent BMS monitoring, pack- and cabinet-level aerosol fire suppression, water-based fire protection, an IP55-rated enclosure, and continuous smoke/temperature detection, all working together to catch and contain thermal risks early.

What operating environments can a liquid-cooled battery container handle?

The CubePal Series is engineered for demanding outdoor conditions, with an operating temperature range of -25°C to 55°C, tolerance for up to 95% relative humidity, and support for high-altitude deployment with appropriate derating.

How long does a liquid-cooled battery container last?

The utility-scale CubePal system is rated for 8,000+ cycles under specified conditions. Advanced liquid thermal management helps keep cells balanced over time, which supports consistent performance and a longer service life than air-cooled alternatives.

Can a liquid-cooled battery container be integrated with solar, wind, or grid infrastructure?

Yes. The container is designed to connect with PV systems, wind power, PCS, EMS, and grid infrastructure, supporting renewable energy storage, peak shaving, backup power, and grid stabilization applications in one flexible platform.

Looking for the Right Liquid-cooled Battery Container for Your Project?

Tell us your power requirements, project location, and application — and we'll put together a customized liquid-cooled battery container configuration, transparent pricing, and technical support tailored to your energy storage project.

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