EG4 FlexBOSS21 Hybrid Inverter

Powerful, Flexible, and Built for Energy Independence

The EG4 FlexBOSS21 (V1.1) is a versatile 48V split-phase hybrid inverter/charger, delivering powerful performance and seamless energy management. Designed to handle heavy loads—including a 5-ton AC unit—this advanced inverter supports 21kW of PV input and can be paralleled up to 16 units, offering a staggering 256kW total continuous output.

Equipped with three MPPTs for maximum solar efficiency, the FlexBOSS21 is fully compatible with the latest EG4 monitoring software, allowing for remote management, mobile notifications, and real-time adjustments. Seamlessly integrates with EG4 GridBOSS for complete control over your Energy Storage System (ESS).

Key Features & Benefits

✅ Flexible Power Management – Operate off-grid, with grid support, or sell excess power back to the grid.
✅ High PV Input Voltage (600V DC) – Reduces cabling costs and increases system efficiency.
✅ Scalable & Powerful – Parallel up to 16 units for large-scale energy solutions.
✅ Smart Connectivity – Remote access via Wi-Fi and closed-loop communication with compatible batteries.
✅ Advanced Safety Features – Includes rapid shutdown, ground fault monitoring, arc-fault protection, and compliance with top industry standards.

🔹 Certified for Safety & Compliance:

• UL 1741 Certified
• CEC Solar Equipment Listed

Technical Specifications

📏 Input Voltage Range: 120/240VAC (Split-phase) | 120/208VAC
⚡ Output Power: 16kW continuous (PV input), with 24kW peak surge capacity
📐 Dimensions: 29.5” x 20.5” x 11.2”
⚖️ Weight: 88 lbs
📜 Warranty: 10-year standard warranty covering all major components

Why Choose the EG4 FlexBOSS21?

The FlexBOSS21 offers next-level efficiency, durability, and innovation, making it an ideal solution for both residential and commercial applications. With advanced remote monitoring, seamless grid integration, and high-output capabilities, this inverter ensures reliable power and complete energy control.

💡 Upgrade Your Solar System Today!
Take control of your energy with the EG4 FlexBOSS21 Hybrid Inverter and maximize your solar potential.

🔋 Experience the power of the EG4 FlexBOSS21—built for performance, reliability, and total energy independence.