EG4 FlexBOSS21 All-in-One Hybrid Inverter | 21kW PV Input | 48V Split Phase

EG4 FlexBOSS21 All-in-One Hybrid Solar Inverter

The EG4 FlexBOSS21 hybrid solar inverter is a flexible 48V split-phase inverter/charger that delivers the reliable power of the 18kPV with added adaptability. It is powerful enough to start a 5-ton AC unit and supports 21kW of PV input. With the ability to parallel up to 10 units, the FlexBOSS21 achieves an impressive total continuous output of 160kW using PV input. Equipped with three MPPTs, it provides optimal solar management, while the enhanced EG4 monitoring software offers complete remote control, including mobile alerts and remote settings adjustments. Its integration with GridBOSS ensures comprehensive management of the entire Energy Storage System (ESS).

EG4 FlexBOSS21 Key Features & Benefits

• Flexible Power Options: Operate off-grid, with grid support, or sell excess power back to the grid.
• High PV Input Voltage: Supports up to 600V DC, allowing reduced cable sizes.
• Smart Connectivity: Remote access with Wi-Fi and closed-loop communication with compatible batteries.
• Safety-First Design: Includes rapid shutdown, ground fault monitoring, arc-fault protection, and robust safety certifications.

EG4 FlexBOSS21 Inverter Specifications

• Input Voltage Range: 120/240VAC; 120/208VAC (Split-phase)
• Output Power: 16kW continuous when using pv input, with a peak surge capacity of 24kW
• Dimensions: 29.5 x 20.5 x 11.2 inches
• Weight: 88 lbs
• Warranty: 10-year standard warranty, covering all major components

Why Choose the EG4 FlexBOSS21 Hybrid Solar Inverter?

The FlexBOSS21 blends efficiency, durability, and innovation, making it an excellent option for those in need of reliable energy solutions. With advanced monitoring and safety features, it delivers dependable power and assurance for both residential and commercial installations. Go off-grid, stay connected, or sell back to the grid. The choice is yours.

What is included with the EG4 FlexBOSS21 Inverter?

1. EG4 FlexBOSS21 All-in-One Hybrid Solar Inverter
2. 70A Breaker:
   Compatible only with the EG4 18kPV Hybrid Inverter.
3. Smart Port Breakers:
   Rated at 30A, 40A, 60A, and 80A.

Please Note:

• You must purchase a 90A Breaker (due to ship separately in early December) for use with the EG4 FlexBoss21 Hybrid Inverter.
• You must purchase a 50A Breaker separately for use with the EG4 12kPV Hybrid Inverter.
• A 125A Breaker (sold separately) can be used with either the Smart Port or Gen Port.

Documents & Downloads

• Specifications Sheet
• User Manual

Order your EG4 FlexBOSS21 Hybrid Solar Inverter Today!

Still Have Questions? Speak with an Expert: (848) 600-6420

EG4 Electronics offers a 10-year Full Parts Replacement or Full Product Replacement Warranty from the date of the battery purchase.  Your warranty must be registered within the first year of purchase to remain valid. If you choose not to register, your warranty may be invalidated. This limited warranty is to the original purchaser of the product and is not transferable to any other person or entity. All parts exchanges are covered during the warranty period. Outside of the continental US, replacement shipping charges may apply.

Warranty Exclusions - EG4 Electronics has no obligation under this limited warranty for product subjected to the following conditions (including but not limited to):  

• Damages incurred during installation or removal 
• Damages caused by mishandling the product or inappropriate environmental exposure 
• Damages caused by improper maintenance 
• Tampering, altering, and/or disassembly of the product
• Using product in applications other than what the manufacturer intended
• Lightning, fire, flood, or acts of God
• Any product with a serial number that has been altered, defaced, or removed
• Damages incurred from voltage or current spikes due to open-loop lithium battery communications