Cabinet Battery Energy Storage System

50kW 209kWh Cabinet Battery Energy Storage System (ESS Energy Storage)

50kW/209kWh liquid-cooled battery storage cabinets are suitable for small and medium commercial and industrial facilities that need better control over energy costs and power availability. They combine 50kW hybrid inverters, 209kWh battery capacity, direct PV connection, and intelligent energy management in one outdoor ESS cabinet. These energy storage cabinets manage solar power, battery charging, grid electricity, and on-site demand within one system, helping businesses use more of the solar energy they generate, lower electricity costs, and provide backup power when needed.

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Features

Suitable for Different Commercial Sites
1. The 50kW/209kWh energy storage cabinets are designed for factories, hotels, farms, and other small or medium commercial facilities
2. Their 20ms grid/off-grid transfer and automatic diesel generator control help maintain power during grid interruptions.
Comprehensive Safety Protection
1. 314Ah LFP cells and IEC 62619-certified battery modules support safe operation.
2. Fire suppression, smoke detection, carbon monoxide detection, alarms, and explosion relief provide added protection.
Flexible Energy Management
1. Integrated BMS and EMS controls support solar self-consumption, peak shaving, time-of-use energy management, and backup power operation.
2. Charging and discharging schedules can be adjusted to suit electricity prices, site demand, and available solar generation.
Stable Battery Performance
1. Their smart liquid cooling maintains consistent cell temperatures during repeated charging and discharging.
2. Thanks to better temperature control, the LFP cells experience less thermal stress and maintain a longer cycle life.
Simple Operation and Remote Access
1. Compact ESS cabinet dimensions reduce the space required for installation at commercial and industrial sites.
2. Cloud-based access provides continuous remote monitoring and allows operators to check operating data, system status, and alarms at any time.

Specifications

Model	XC-CWC/209/AC/H
Cell Configuration	1P208S
Pack Configuration	1P52S
Energy Capacity	209 kWh
Nominal DC Voltage	665.6 V
DC Voltage Range	520 V–748.8 V
Nominal Cell Capacity	314 Ah
Charge/Discharge C-Rate	0.5C
Max. DC Charge Current	215 A
Max. DC Discharge Current	215 A
Charge Temperature Range	0°C to 55°C
Discharge Temperature Range	-20°C to 55°C
Storage Temperature Range	-30°C to 60°C
Max. Operating Altitude	≤ 2,000 m
Dimensions (W × D × H)	1,371.75×1,560×2,170 mm
Weight	2,050 kg (± 50 kg)
Thermal Management	Liquid Cooling
Power Interface	Quick Connect / Plug-and-Play
Power Connection
Communication Connection
Rated AC Output Power	50 kW

Components

Battery System:
The ESS cabinets use 209kWh lithium iron phosphate battery packs in a 1P208S configuration. Their nominal voltage is 665.6V DC, with an operating range of 520–748.8V DC and a maximum charge and discharge current of 215A. At 80% depth of discharge, the batteries are rated for more than 6000 cycles.
Power Conversion System:
The integrated 50kW bidirectional converters handle charging and discharging in grid-connected, off-grid, and hybrid modes. Solar power, battery storage, grid electricity, and diesel generators can all be managed through the EMS according to site demand.
Temperature Control System:
Liquid cooling keeps the battery cells within a stable operating temperature range. The cabinets support charging from 0°C to 55°C, discharging from -20°C to 55°C, and storage from -30°C to 60°C.
Battery and Energy Management:
Integrated BMS and EMS units help monitor battery condition, power flow, and operating data. Mobile and PC access allow users to check system status and performance reports remotely, while predictive maintenance functions can reduce operation and maintenance costs by more than 30%.

Details

Smoke and Heat Detectors
Energy Management System (EMS)
Liquid Cooling Unit and High-Voltage Control Box

Applications

C&I Solar Energy Storage
Suitable for factories, industrial parks, and commercial buildings that need to combine solar generation, peak shaving, and backup power in one energy system.
Microgrid and Off-Grid Power Supply
ESS cabinets can work as a main energy storage unit in microgrids and provide stable power for islands, mining sites, and other remote locations with limited grid access.
Solar-Storage EV Charging Stations
When paired with PV systems and fast chargers, ESS cabinets help reduce sudden demand on the grid and improve the use of on-site solar power.
Grid Support Services
Used for demand response and frequency regulation to support grid operation and create additional revenue.