Smart BESS Cabinet 100kW 215kWh/241kWh | Commercial & Industrial Battery Energy Storage System | OEM ODM BESS Manufacturer China
Apr 23, 2026
ONESUN: Redefining Commercial and Industrial Energy Storage Solutions
Against the backdrop of accelerating global energy structure transformation, energy storage systems are upgrading from "supporting equipment" to "core energy assets." In this competitive landscape, the Chinese brand ONESUN was among the first to propose and implement the BESS (Battery Energy Storage System) product model, becoming one of the industry pioneers in commercializing "photovoltaic + energy storage integration" applications. With its flagship product, the Smart BESS Cabinet CAO-100kW/215kWh/241kWh, ONESUN is redefining commercial and industrial energy storage solutions.
Product Architecture: Fully Integrated One-Stop Solution
From a product perspective, ONESUN's Smart BESS Cabinet is a highly integrated all-in-one energy storage system. The system integrates batteries, PCS (power conversion system), EMS (energy management system), and protection systems into a single standardized cabinet, achieving true "All-in-One" design. This approach not only significantly reduces installation complexity and enables plug-and-play deployment, but also substantially shortens project delivery cycles and labor costs. Additionally, the system features a modular architecture that allows flexible capacity expansion based on customer requirements, providing enterprises with the option for phased investment.
Core Performance: Industry-Leading Stability and Adaptability
In terms of core performance, this BESS product delivers industry-leading stability and environmental adaptability. The system supports seamless switching between grid-connected and off-grid modes, enables 100% three-phase unbalanced load operation, and features critical capabilities such as islanding and black start functionality. This means that even when the grid is unstable or completely disconnected, enterprises can maintain continuous operation, significantly enhancing energy security. Furthermore, the product incorporates built-in reactive power compensation, harmonic filtering, and three-phase unbalance correction functions, effectively optimizing power quality and reducing enterprise electricity consumption losses.
☀️ ONESUN energy storage solutions
⚡ NEXT-GEN SMART BESS
Smart BESS Cabinet - Industrial & Commercial Hybrid Energy Storage System · High Efficiency & Modular Design
| Model / Parameter | CAO-100kW215kWh | CAO-100kW241kWh |
|---|---|---|
| 📌 PV INPUT DATA | ||
| Rated PV Power | 120kW | |
| PV Voltage Range | 200~950Vdc | |
| MPPT Voltage Range | 200~850Vdc | |
| Rated PV Voltage | 600Vdc | |
| Start-Up Voltage | 250Vdc | |
| Number of MPPT Tracks | 4 | |
| Max. Input Current per MPPT | 50A + 50A + 50A + 50A | |
| Isc PV (Short circuit current) | 60A + 60A + 60A + 60A | |
| 🔋 BATTERY DATA | ||
| System Capacity | 215 kWh | 241 kWh |
| Cell Type | LFP 3.2V / 280Ah | LFP 3.2V / 314Ah |
| Battery System Configuration | 1P240S | |
| Rated Battery Voltage | 768Vdc | |
| Battery Voltage Range | 672 ~ 864Vdc | |
| 🔌 AC INPUT (ON GRID) | ||
| Rated AC Power (On-Grid) | 100kW | |
| Max. AC Power | 110kW | |
| Nominal AC Voltage | 400Vac (3P+N+PE) | |
| Output Voltage Range | 320 ~ 460Vac | |
| Grid Frequency | 50 / 60Hz | |
| Power Factor (adjustable) | -1 ~ 1 | |
| THDi (Current distortion) | < 3% (at rated power) | |
| Wiring Configuration | 3P + N + PE | |
| 🏝️ AC OUTPUT (OFF GRID / BACKUP) | ||
| Rated Output Voltage | 400Vac | |
| Rated Output Power | 100kW | |
| Nominal Output Frequency | 50 / 60Hz | |
| THDu (Voltage distortion) | < 3% (linear load) | |
| ⚙️ SYSTEM PERFORMANCE | ||
| Inverter Max. Efficiency | ≥ 98.5% | |
| Max. System Efficiency (AC-AC) | ≥ 90% | |
| Charge / Discharge Rate (C-rate) | < 0.5 CP (max continuous) | |
| Fire Protection System | Aerosol / Perfluorohexanone | |
| 📐 GENERAL & MECHANICAL | ||
| Expandability | Parallel operation of whole machine | |
| Dimensions (W x D x H) | 2120 x 1300 x 2230 mm | |
| Weight | 2.4 t | 2.5 t |
| Ambient Temperature Range | -20℃ ~ +50℃ | |
| Relative Humidity | ≤ 95% (non-condensing) | |
| Max. Working Altitude | 3000m (derating above 2000m) | |
| Protection Rating | IP54 (indoor/outdoor rated) | |
| Cooling Method | Intelligent Air Cooling | |
| Communication Interfaces | RS485 / CAN / LAN (Ethernet) | |
| 📜 CERTIFICATIONS & STANDARDS | ||
| Approvals & Compliances | CE-EMC, UN38.3, CEI 0-21, EN50549-1, VDE-AR-N4105, UNE 217002, NTS TYPE A, G99, AS/NZS 4777.2 | |
✅ Advanced LFP battery · 6000+ cycles @ 25°C · Smart EMS ready
🌿 Green energy · On/Off grid seamless switch · Peak shaving & backup
Intelligence and Digitalization: Entering the Era of Digital Energy
From an intelligent technology perspective, ONESUN's BESS system has entered the "digital energy" stage. The Smart BESS Cabinet is equipped with a cloud-based remote monitoring platform that supports real-time data acquisition, battery state analysis, and remote operation and maintenance management. Users can monitor system operation status anytime through the cloud platform, enabling data-driven maintenance decisions that reduce maintenance costs and extend system lifespan. This "hardware-software integration" capability represents a competitive advantage that traditional energy storage equipment finds difficult to match.
Hardware Design: Engineering Excellence and Durability
In hardware design, the product equally demonstrates exceptional engineering standards. It features a removable battery structure that facilitates maintenance and replacement, significantly shortening operation and maintenance cycles. The system also incorporates optimized thermal management design and high-strength protective structures, enabling stable long-term operation in complex environments. According to public data, the product uses LiFePO4 (lithium iron phosphate) battery cells with a cycle life of up to 12,000 cycles and a design lifespan of approximately 15 years, delivering exceptional safety and economic efficiency.
Competitive Advantages: Why Global Customers Choose ONESUN
It is worth emphasizing that ONESUN is not merely an equipment manufacturer, but a globally leading energy storage system solution provider. Since its establishment, the company has consistently focused on comprehensive layout across the photovoltaic and energy storage value chain, encompassing battery cells, battery packs, inverters, and complete system integration, with full vertical integration capabilities. This strength enables the company to provide genuine OEM and ODM customization services to B2B clients, from battery cell selection to system architecture design to brand customization, achieving end-to-end support.
Why do global customers choose ONESUN?
| Competitive Advantage | Details |
|---|---|
| Technology Leadership | ONESUN is among the earliest Chinese enterprises to propose the BESS integrated product model and continues to drive product standardization and modularization development, maintaining a first-mover advantage in the industry. |
| Complete Value Chain | Compared to single-equipment suppliers, ONESUN provides an integrated one-stop solution from batteries to complete systems, significantly reducing customer procurement and integration costs. |
| Global Delivery Capability | The company boasts rich international project experience with cumulative completion of multiple GW-scale projects, enabling rapid response to diverse market demands across different countries. |
| High Customization Level | ONESUN supports in-depth OEM/ODM services, meeting diverse customer requirements in branding, technology, and application scenarios. |
Application Scenarios: Diverse and Comprehensive Solutions
The Smart BESS Cabinet is widely applicable across multiple fields including commercial complexes, industrial manufacturing, communication base stations, outdoor environments, and emergency power supply systems. Whether for peak shaving and valley filling, backup power, photovoltaic consumption support, or microgrid construction, this product delivers efficient and stable energy support.
In summary, ONESUN has elevated energy storage systems from "equipment" to "solutions" by pioneering the BESS product model and implementation, and through highly integrated systems, intelligent technology, and global service capabilities, has constructed formidable market competitive barriers. In the context of the global energy transition mega-trend, choosing ONESUN means not only selecting a product, but partnering with a reliable long-term energy solution provider.
Article Source: Lithium battery manufacturer - ONESUN China
Featured Recommendations：all in one ess , complete solar kits ,solar power station , portable solar generator , liFePO4 solar battery ,off-grid solar systems, telecom lithium battery rack , Off grid rural solar power systems,communication base station battery, all in one solar inverter
