EG4 FLEXBOSS21 Inverter/Charger 16000W 48V 120/240VAC 21000W MPPT

EG4 FLEXBOSS21 Inverter/Charger 16000W 48V 120/240VAC 21000W MPPT

Regular price $4,399.50
Regular price -% Sale price $4,399.50
LESS THAN 50
Leave a Review

EG4 FLEXBOSS21 Inverter/Charger 16000W 48V 120/240VAC 21000W MPPT

EG4 FLEXBOSS21 Inverter/Charger 16000W 48V 120/240VAC 21000W MPPT

EG4 Battery
MPN No: EG4FLEXBOSS21
In Stock
Regular price $4,399.50
Regular price -% Sale price $4,399.50

1
2
3

Delivery

Shipping disclaimer: US Solar Supplier works hard to offer the most competitive shipping rates possible. Shipping is auto calculated. If you have questions, let's work together directly! Please reach out to arrange case based logistics. Contact our team at sales@ussolarsupplier.com or by chat during business hours 9 am to 5 pm EST.

Expected ship date Apr 25 - 28 About shipping

Payment

We offer multiple secure payment options for your convenience

View full details
Regular price $4,399.50
Regular price -% Sale price $4,399.50

Specifications

.PDF
Documents
.PDF
Documents
Data Sheet

EG4 FLEXBOSS21 Inverter-Charger 16000W 48V 120/240VAC 21000W MPPT

Key Features:

  • 16kW Split-Phase Hybrid Inverter – Supports off-grid, grid-tied, and backup power applications.
  • Up to 21kW Solar Input – Three independent MPPTs with 600VDC max input.
  • Transformerless High-Frequency Design – Provides efficient and reliable operation.
  • Parallel Capability – Connect up to 16 units for a total system output of 256kW.
  • Battery & Grid Integration – Works with 48V lithium and lead-acid batteries, with closed-loop communication support.
  • Built-in Rapid Shutdown Compliance – Meets NEC 690.12 & CSA C22.2#330:2017 safety standards.
  • Wi-Fi Monitoring & Remote Adjustments – Integrated plug-in Wi-Fi device for mobile monitoring and control.
  • Fast Transfer Time10ms to 20ms automatic switching for uninterrupted power.
  • 10-Year Standard Warranty – Ensures long-term reliability.

Best Applications:

  • Off-grid homes and remote installations
  • Backup power for residential and commercial systems
  • Smart grid-interactive solar energy management
  • Scalable hybrid solar power plants

Advanced Technology & Performance:

The EG4 FlexBOSS 21 is a hybrid inverter and charger, capable of operating off-grid, on-grid, or in backup mode. Its high-frequency transformerless design allows for efficient power conversion, while the three MPPT inputs enable flexible PV array configurations. The closed-loop communication system ensures optimal battery charging and discharging, improving overall efficiency and lifespan.

Installation & Compatibility:

  • Compatible with EG4 48V batteries and other lithium/lead-acid batteries.
  • 120/240V split-phase output with 208V support for commercial applications.
  • Integrated DC disconnects and AFCI/GFDI protections.
  • Wi-Fi, CAN, and RS485 connectivity for advanced monitoring.

About EG4 Electronics:

EG4 Electronics is a leading provider of smart energy solutions, specializing in solar inverters, battery storage, and monitoring systems. With a focus on efficiency, reliability, and scalability, EG4 products offer high-quality solutions for residential, commercial, and off-grid applications.

Technical Specifications:

Specification Details
Model Number EG4 FlexBOSS 21
AC Output Voltage 120/240VAC (Split-Phase) / 120/208VAC (L1/L2/N)
Nominal Power Output 16kW (PV & Battery), 12kW (Battery Only)
Maximum PV Input 21kW
Number of MPPTs 3 (2 Inputs per MPPT for MPPT 1 & 2, 1 Input for MPPT 3)
Maximum DC Input Voltage 600VDC
MPPT Voltage Range 120-440VDC
Peak Power Output 24kW (0.5 sec) / 18kW (1 sec)
Transfer Time 10ms (Configurable) / 20ms (Parallel Mode)
Battery Voltage 48VDC
Battery Charging Power 12kW Max
Battery Compatibility Lead-Acid / Lithium
Parallel Capability Up to 16 Units (256kW Total)
Enclosure Rating NEMA 4X
Cooling Concept Forced Air Cooling
Dimensions (H x W x D) 30.43" x 22.28" x 11.22"
Weight 88 lbs
Operating Temperature -25°C to 60°C (-13°F to 140°F)
Noise Emission <50dB @ 3ft
Certifications UL 1741 SA, IEEE 1547, CSA 22.2, NEC 690.12 (RSD), FCC Part 15

 

Why Buy From US Solar Supplier?

As an American founded company out of Kentucky, US Solar Supplier is committed to providing top-quality solar products, backed by the world’s leading manufacturers. Our promise is to get you the fairest price from the best brands that offer warranties you can count on. We are updating our inventory daily with solar components that offer the latest technology. With a reputation for excellence and a dedication to customer satisfaction, we ensure that every product we sell meets the highest standards in the industry.

Need Assistance?
We’re here to help! If you have any questions or need more information before making your purchase, don’t hesitate to call us at 1-800-230-7004. Our knowledgeable and friendly team is ready to assist you with product details, installation advice, or the purchasing process.

Why Buy From Us?
Trusted Supplier: We work with Tier 1 manufacturers who stand behind their products.

Expert Support: Our team is here to guide you every step of the way.

Manufacturer-Backed Warranties: Enjoy peace of mind with the 10-year product
warranty directly from the manufacturer.
Easy and Secure Checkout: Your information is protected with top-notch security for a smooth, worry-free transaction.

Join the many satisfied customers who have trusted us for their solar needs. Add to your cart now to secure your high-efficiency solar panels and take the next step towards sustainable energy!

FAQ

Shipping costs at US Solar Supplier are calculated based on the weight and dimensions of the product(s) in your order. The company utilizes FedEx or UPS for ground shipments and trusted freight carriers for larger shipments. All shipments are insured for customer protection.
For standard delivery, most orders will arrive at their destination within 7 to 10 business days. Please note that these estimates can change depending on the carrier's operational capabilities and other uncontrollable factors.
It is essential to meticulously inspect your shipment upon delivery. If any damage or issues are found, note them on the Bill of Lading (BOL) or the delivery receipt. Major visible damage should result in the rejection of the delivery. Any damages must be reported to US Solar Supplier by email within 24 hours of delivery, including the signed BOL and any supporting documents or photos.
US Solar Supplier offers only the best Tier 1 product offerings and high-quality solar equipment. You can design your solar project using the solar design tool, tailored to fit your needs. If you have specific preferences or deadlines, include this information in the order notes or contact the sales department before placing your order. US Solar Supplier is committed to empowering you with the tools and support needed to ensure your project's success.
US Solar Supplier offers a range of finance solutions through its partners, including Power Purchase Agreements, Leases, and Loans. Additionally, their consultative approach can help you take advantage of PACE financing for commercial projects. The team at US Solar Supplier is ready to assist in finding the right finance solution to make your solar project a reality.