Smart BESS Cabinet 30kW/50kW | 60kWh–100kWh Energy Storage System OEM/ODM-OneSun

As the global energy structure continues to evolve and commercial & industrial (C&I) energy storage demand accelerates, the Smart BESS Cabinet is rapidly becoming a core component of commercial, industrial, and outdoor energy systems. Based on the product specifications shown above, ONESUN, a world-recognized battery brand manufacturer, introduces the Smart BESS Cabinet with models CAO-30kW / 50kW and capacity options of 60kWh / 100kWh, delivering flexible, mature, and reliable OEM & ODM battery pack solutions to help global partners quickly capture the energy storage market.

Designed as a highly integrated smart energy storage system, the ONESUN Smart BESS Cabinet adopts a modular and highly compatible architecture. The detachable internal battery structure enables easy maintenance and significantly reduces long-term operation and maintenance costs. At the same time, the system supports rapid deployment across diverse application scenarios, including commercial parks, standalone outdoor systems, emergency backup power, and telecom base stations—truly achieving “one cabinet, multiple applications.”

echnical Data
Model	CAO-30kW60KWh Battery parameter	CAO-50kW100KWh Battery parameter
Cell Type	LiFePO4	LiFePO4
Nominal Capacity	314AH	280AH
Charge Ratio	0.5C	0.5C
Energy	60.288kWh	100.48kWh
Nominal Voltage	192V	320V
Voltage Range	157.5~217.5V	300V~438V
Rated Power AC Side	30 kW	50 kW
Rated Voltage AC Side	125VDC	380VAC
Maximum Power AC Side	50VDC	50kVA
Maximum Current AC Side	65A	80A
THDI (Reduced THDI)	<2% (Reduced Power)	<2% (Reduced Power)
DC Component	<0.5%	<0.5%
Grid Rated Frequency	50/60Hz	50/60Hz
Rated Grid Voltage	230/400V(AC)	230/400V(AC)
Voltage Deviation	±15%	±15%
Connect A Wire	3P+N+PE	3P+N+PE
Power Factor	0.98 Leading To 0.98 Lagging	0.98 Leading To 0.98 Lagging
Full Load Voltage Range	615~950 (3W+PE)/680~950 (3W+N+PE)(V)	615~950 (3W+PE)/680~950 (3W+N+PEC)(V)

System Data
System Data	CAO-30kW60KWh	CAO-50kW100KWh
Lower In/Out/Side In/Out	Lower In/Out/Side In/Out	Lower In/Out/Side In/Out
Communication Interface	RS485 / CAN / RS232 / RJ45	RS485 / CAN / RS232 / RJ45
System Communication Protocol	Standard: Modbus (Optional)	Standard: Modbus (Optional)
Protection Function	Over-Charge, Over-Discharge, Over-Current, Short-Circuit, Over-Voltage, Under-Voltage, Over-High/Low Temperature	Over-Charge, Over-Discharge, Over-Current, Short-Circuit, Over-Voltage, Under-Voltage, Over-High/Low Temperature
Endurance Protection Rating	IP21	IP21
Operating Temperature	Charging: -20℃~65℃; Discharging: -30℃~70℃	Charging: -20℃~65℃; Discharging: -30℃~75℃
Storage Temperature	-10℃~40℃	-10℃~40℃
Cycle Life	≥8000 Times @ 80% DoD	≥8000 Times @ 80% DoD
Anti-Corrosion Grade	C4	C4
PCS Temperature Control Method	Intelligent Temperature Control Air-Cooled Industrial Grade Air Conditioning	Intelligent Temperature Control Air-Cooled Industrial Grade Air Conditioning
Battery Temperature Control Method	Pack Aerosal + Sevoflurane + Water Fire Interface	Pack Aerosal + Sevoflurane + Water Fire Interface
Coding	N/A	N/A
Firefighting Program	N/A	N/A
Size	16007101500mm	16007101500mm
Weight	Approx. 2.5t	Approx. 2.5t
Approve	CE-EMC,UN38.3	CE-EMC,UN38.3
DIESEL GENERATOR AUTO Control System	Optional	Optional
Lighting System	N/A	N/A
Smoke Detector	N/A	N/A
Fire Extinguishing System	YES	YES
Fire Sprinkler System	N/A	N/A
STS	Optional	Optional
Assembly Style	Rock Style	Rock Style
Cloud Monitoring Platform	YES	YES
Thermal Management AC	NO (Forced Air Cooling)	NO (Forced Air Cooling)

In terms of grid adaptability, the Smart BESS Cabinet supports seamless switching between grid-tied and off-grid modes, ensuring stable operation under complex and variable power conditions. In off-grid mode, the system can handle 100% three-phase load imbalance and supports high- and low-voltage ride-through, islanding operation, and black start functionality. This makes it particularly suitable for regions with weak grid infrastructure or unstable power supply, providing continuous, safe, and reliable energy support.

The ONESUN Smart BESS Cabinet is equipped with a customized Energy Management System (EMS) and supports cloud-based remote monitoring. Users can remotely access real-time system status, battery performance data, and energy consumption metrics, enabling intelligent dispatching and refined energy management. In addition, the system offers reactive power and load imbalance compensation, improving overall power quality, reducing energy losses, and maximizing energy efficiency for commercial users.

Safety has always been a top priority at ONESUN. The Smart BESS Cabinet integrates multiple layers of protection, including over-temperature, over-voltage, over-current, leakage, and insulation fault protection. Combined with advanced lithium battery thermal management and fire protection systems, potential risks are effectively controlled at the source. With an overall system efficiency exceeding 90%, the cabinet delivers both high performance and long-term operational reliability.

Moreover, the AC output of the Smart BESS Cabinet complies with certification standards in China, Europe, South Africa, and other regions, enabling smooth entry into global markets. Regardless of the target country or application scenario, ONESUN can customize the system according to local standards to ensure fast and compliant deployment.

As an experienced energy storage manufacturer, ONESUN goes beyond standardized products by focusing on comprehensive OEM & ODM battery solutions. From cell selection and system structural design to BMS, PCS integration, and full cabinet customization, ONESUN provides end-to-end support for brand owners and system integrators, helping them launch competitive energy storage products efficiently.

Looking ahead, with the continued growth of commercial energy storage and distributed energy systems, the ONESUN Smart BESS Cabinet (CAO-30kW/50kW, 60kWh/100kWh) will continue to deliver high reliability, enhanced safety, and strong adaptability—creating long-term value for global customers in the smart energy era.

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