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SunWell Energy

261kWh C&I Liquid-Cooled ESS Cabinet

261kWh C&I Liquid-Cooled ESS Cabinet

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Model

Built as a commercial LiFePO4 cabinet, the 261kWh C&I Liquid-Cooled ESS Cabinet brings dependable storage to factories, shops and micro-grids. Owners use it to ride through outages and shift solar or grid energy into the evening peak. The commercial design installs with basic cabling and no special tools, fitting tight equipment spaces.

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261kWh C&I Liquid-Cooled ESS Cabinet — Technical Specifications
MODELSW-eBank-261LS
Battery Packs Quantity5
Cell Capacity314Ah
Rated Voltage832V
Voltage Range650-949V
Rated Energy261kWh
Max.Continuous Charging/Discharge Current157A
Max. Charge Current100%
Cycle Life6000times @25°C,0.5C,5C, 90%DOD≥70%SOH
Max. PV Input Power60kW*2
Rated Input Voltage600Vdc
Max.Input Voltage1000Vdc
MPPT Voltage Range150-950V
PV Input Current45A*8
Rated Power125kW
Max.Input/Output Power150kVA
Overload Capacity1.1Pn lasting for 10 minutes; 1.2Pn lasting for 1 minute
Max. Efficiency0.989
Voltage3L/N/PE,400V
Frequency50/60Hz
THDI≤3%
Power Factor1 leading to 1 lagging
Product Dimension(W×D×H)1120×1400×2340mm
Net WeightAbout 2600kg
Contact MethodCAN/RS485/WIFI
Design Life10Years
ScalabilitySupport in parallel
ProtectionIP54
Cooling MethodPCS air cooling, Battery pack liquid cooling
Operating Temperature-20 to 55°C
Humidity10%~95%RH
Altitude<2000m

Features

  • High-capacity LiFePO4 storage supports commercial duty. The cabinet packs energy for factories, shops and micro-grids, sustaining daily charge and discharge.
  • Liquid cooling holds cells in a tight temperature band. The liquid loop keeps every cell near its optimal temperature, extending life and allowing higher continuous power.
  • Integrated EMS delivers peak shaving and backup. It coordinates PV, battery and load for demand-charge reduction, time-of-use arbitrage and seamless backup transfer.
  • Modular architecture scales with the project. Capacity grows by adding cabinets or racks without replacing core components as the site requirement evolves.
  • Remote monitoring enables proactive operation. Over CAN/RS485 operators track health, energy flow and alerts from a central platform.
  • Multi-level safety protects the installation. Cell, module and system protection safeguard the cabinet for continuous commercial use.

Applications

  • Commercial & Industrial Backup: Keeps production, lighting, and IT equipment running through grid outages.
  • Peak Shaving: Discharges stored energy during high-tariff hours to lower demand charges.
  • Solar Self-Consumption: Absorbs up to 120kW of PV input and releases it when the site needs it.
  • Microgrid & Off-Grid: Forms the storage core of microgrids or sites without reliable grid access.
  • Data Centers & Telecom: Supplies steady three-phase power to critical, always-on facilities.
  • Fleet & EV Depots: Supports charging infrastructure with buffered, dispatchable energy.

Energy Management & System Architecture

The SW-eBank-261LS centers on a 261kWh LFP battery built from 314Ah cells in five packs, delivering energy storage at 832V with 157A continuous charge and discharge across a 650–949V window. The inbuilt PCS converts DC battery and PV energy into clean 400V three-phase AC, while the integrated MPPT draws solar through a 150–950Vdc range with up to 120kW of PV input.

An EMS-style control layer coordinates power flow between PV, storage, and load, managing charge and discharge to capture solar and serve site demand. Intelligent control, supported by CAN, RS485, and WIFI communication and reaching up to 98.9% maximum efficiency, lets operators monitor status remotely and balance generation against consumption, so the cabinet charges from the grid or PV and discharges to cover loads as needed.

Grid, Backup & System Integration

The SW-eBank-261LS integrates with a 3L/N/PE 400V grid at 50/60Hz and supports both grid-connected and off-grid operation, with STS and ATS handling transfer to keep essential loads powered during outages. A power factor adjustable from 1 leading to 1 lagging and THDi at or below 3% help the cabinet ride through grid conditions cleanly.

For savings and resilience, the system supports peak-shaving by discharging stored solar during high-tariff periods and can pair with PV or diesel generators through its integrated architecture. Parallel expansion lets operators add cabinets to enlarge both capacity and power, scaling a single 261kWh unit into a larger C&I storage bank as the site grows.

Warranty

LiFePO4 batteries for 5 years, hybrid inverters for 2 years, and solar panels under the supplier policy of a 10-year product warranty plus 30-year linear power warranty. If you experience any quality issues within the applicable warranty period, please contact us and we will arrange a replacement or repair promptly.

Frequently Asked Questions

Can the cabinet connect to my existing 400V three-phase supply?

Yes. The SW-eBank-261LS uses a 3L/N/PE 400V interface at 50/60Hz with THDi at or below 3%, integrating PCS, MPPT, STS, and ATS plus an optional isolation transformer for most commercial grids.

How much energy does it store and what load can it run?

It stores 261kWh from 314Ah LFP cells at 832V and delivers 125kW continuous AC (150kVA peak), enough for larger lighting, HVAC, and machinery loads during outages or peak periods.

Can I add more cabinets later?

Yes. The system supports parallel expansion, so you can add cabinets to grow stored energy and power as site demand increases.

How is the battery kept safe and cool?

PACK-level liquid cooling keeps cells stable, while a three-level fire-protection strategy guards against thermal runaway; the IP54 enclosure suits commercial and sheltered outdoor use.

Expert Support

Our team of solar energy experts is ready to help you find the perfect solution for your needs.

Fast Response

We typically respond to all inquiries within 24 hours during business days.

Custom Solutions

Every project is unique. Let us design a solar solution tailored to your specific requirements.