EG4 FlexBOSS21 Hybrid Inverter Review
The EG4 FlexBOSS21 Hybrid Inverter is a cutting-edge solution for solar energy systems, delivering high performance, versatility, and innovative features. Designed to meet the needs of residential, commercial, and off-grid applications, this inverter offers advanced technology and robust capabilities that set it apart in the renewable energy market.
1. Key Features of the EG4 FlexBOSS21
High Power Output
The FlexBOSS21 is designed to handle high-power demands, offering:
- 16kW of continuous output power with PV and battery.
- 12kW continuous output using battery alone.
- Surge capability strong enough to start a 5-ton AC unit.
This makes it ideal for both heavy-duty applications and consistent energy needs in residential or commercial setups.
Flexible Hybrid Design
This inverter can operate in multiple modes:
- Fully off-grid.
- Using grid electricity.
- Selling excess power back to the grid.
Its versatility ensures seamless operation regardless of the setup or energy requirements.
Impressive PV Input Capacity
With support for up to 21kW of usable solar power and a maximum recommended PV input of 24kW, the FlexBOSS21 eliminates the need for a combiner box. Its high DC input voltage (up to 600VDC) allows for thinner cables, reducing installation costs.
Advanced Monitoring and Management
The built-in Wi-Fi and EG4 monitoring platform enable total remote control and real-time alerts, ensuring you’re always informed about your system’s performance. The mobile-friendly platform enhances user convenience.
2. Technical Highlights
Efficiency
- Maximum efficiency (PV to grid): 97%.
- Maximum efficiency (PV to battery): 94.5%.
These high efficiency ratings ensure minimal energy loss during conversion, maximizing the utility of your solar energy system.
Three MPPT Controllers
The FlexBOSS21 features three individual MPPTs (Maximum Power Point Tracking), allowing precise control over solar input and optimization for varying sunlight conditions.
Safety and Compliance
Safety is a top priority for the FlexBOSS21. It includes:
- Rapid Shutdown compliant with NEC 690.12.
- Integrated DC disconnect and multiple safety protections, including reverse polarity and over-voltage protection.
- Certifications such as UL1741, IEEE 1547, and CSA 22.2.
3. Who Is the FlexBOSS21 Inverter For?
Residential Users
For homeowners looking for a reliable, high-power inverter, the FlexBOSS21 delivers:
- Consistent energy supply for heavy appliances.
- Backup power during outages.
- Integration with solar and grid systems for optimal cost savings.
Commercial Applications
Businesses can benefit from:
- High scalability (up to 16 units in parallel for a total output of 256kW).
- Energy independence with grid-tied and off-grid options.
- Advanced monitoring for energy optimization.
Off-Grid Enthusiasts
Its ability to handle demanding applications, such as starting air conditioners or running high-load tools, makes it an excellent choice for cabins, RVs, and remote locations.
4. Why Choose the FlexBOSS21?
The EG4 FlexBOSS21 stands out for its:
- Scalability: Paralleling up to 16 units provides unmatched flexibility for future expansion.
- Durability: With a NEMA 4X outdoor rating, the unit is built to withstand tough environments.
- Ease of Installation: Features like high DC voltage inputs reduce installation complexity and costs.
5. Final Thoughts
The EG4 FlexBOSS21 Hybrid Inverter combines robust performance, advanced features, and user-friendly operation to meet diverse energy needs. Whether you’re powering a residential home, managing a commercial building, or setting up an off-grid retreat, this inverter offers the flexibility and reliability required for a modern energy system.
Ready to make the most of your solar energy system? Consider the EG4 FlexBOSS21 as your go-to hybrid inverter for power, efficiency, and convenience.
Need Help? If you’re interested in learning more about the FlexBOSS21 or need guidance on choosing the right inverter, feel free to reach out or explore our recommended solar energy solutions.