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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).
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:
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
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.
For all orders exceeding a value of 100USD shipping is offered for free.
Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.
Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.
