Must-see Eg4 Flexboss21 Inverter & Eg4 Gridboss Bundle | 21kw Pv Input | 48v Split Phase Unlock 50% Savings [OJ5iR8CX]
EG4 FlexBOSS21 Inverter & EG4 Gridboss Bundle | 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 pow
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Must-see Eg4 Flexboss21 Inverter & Eg4 Gridboss Bundle | 21kw Pv Input | 48v Split Phase Unlock 50% Savings [OJ5iR8CX]
EG4 FlexBOSS21 Inverter & EG4 Gridboss Bundle | 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 GridBOSS Micro-Grid Interconnection Device (MID)
The EG4 GridBOSS MID streamlines your Energy Storage System (ESS) by combining up to 10 components into one robust unit. It is designed for seamless integration with utilities, generators, inverters, and loads, providing centralized control, straightforward installation, and real-time remote monitoring.
Kit Type:Â Residential
Off Grid Applications:Â Standard Home System (Off-Grid Homes, Cabins, Homesteads)
Hybrid Applications:Â Standard Home System (3-4 Bedrooms)
EG4 FlexBOSS21 Hybrid Inverter | 48V Split Phase | 21kW PV Input
The EG4 FlexBOSS21 is a versatile 48V split-phase, hybrid inverter/charger that offers the same dependable power as the 18kPV with enhanced flexibility. Powerful enough to start a 5-ton AC unit, the FlexBOSS21 supports 21kW of PV input. Capable of paralleling up to 10 units together, the FlexBOSS21 has an impressive total output of 160kW. Three MPPTs give users optimal control over their solar needs, while the updated EG4 monitoring software allows for convenient total remote management, complete with mobile notifications and remote setting. Seamless interaction with GridBOSS gives users control over their entire Energy Storage System (ESS).
Features:
- Flexible Power Options:Â Operate off-grid, with grid support, or sell excess power back to the grid.
- High PV Input Voltage:Â Supports up to 600V DC, allowing reduced cable sizes.
- Smart Connectivity:Â Remote access with Wi-Fi and closed-loop communication with compatible batteries.
- Safety-First Design:Â Includes rapid shutdown, ground fault monitoring, arc-fault protection, and robust safety certifications.
- CEC Solar Equipment Listing
EG4 GridBOSS Micro-Grid Interconnection Device (MID)
The EG4 GridBOSS MID simplifies your Energy Storage System (ESS) by consolidating up to 10 components into a single, powerful unit. Designed to seamlessly connect utilities, generators, inverters, and loads, it offers centralized control, easy installation, and real-time remote monitoring.
Features:
- One-Point ESS Control:Â Connect and manage utility, inverters, generator, and loads from a single device.
- Reduced Complexity:Â Replace breakers, transfer switches, and more with one compact solution.
- Smart Load & Power Shedding:Â Automate power management to optimize battery performance.
- 200A Service Entrance:Â Reliable with a 22 kAIC main breaker for powerful service integration.
- Real-Time Monitoring:Â Access and adjust settings remotely via the EG4 app or monitoring system website.
- Configurable Breakers:Â Supports one generator up to 125A, 3 hybrid inverters up to 90A each, and 4 smart ports ranging from 60A to 125A.
What's Included
Everything you need is included with your product.
- 1 x EG4 FlexBOSS21 Hybrid Inverter | 48V Split Phase | 21kW PV Input
- 1 X EG4 GridBOSS MID | 200A Service Entrance
- User Manuals
EG4 FlexBoss Specifications
| Specification | Details |
| Compatible Battery Types | Lead-acid/ Lithium |
| Max. Charge/Discharge Power | 12000W |
| Nominal Voltage | 48VDC |
| Voltage Range | 40 – 60 VDC |
| Recommended Battery Capacity Per Inverter | >300Ah |
| Max Units in Parallel | 16 |
| Product Dimensions (HxWxD) | 30.43 × 22.28 × 11.22 in. (750 × 520 × 285 mm) |
| Unit Weight | 88 lbs. (52 kg) |
| Design Topology | High Frequency – Transformerless |
| Relative Humidity | 0 – 100% |
| Operating Altitude | <6561 ft (<2000 m) |
| Operating Ambient Temperature Range | -13° – 140°F (-25° – 60°C) |
| Storage Ambient Temperature Range | -13° – 140°F (-25° – 60°C) |
| Noise Emission (Typical) | <50dB @ 3 ft |
| Communication Interface | RS485/Wi-Fi/CAN |
| Standard Warranty | 10-year standard warranty* |
| Outdoor Rating | NEMA 4X |
EG4 GridBOSS Specifications
| Specification | Details |
| Communication Interface | RS485/Wi-Fi/CAN |
| Internal Bus Rating | 350A |
| Internal Fuse Rating | 315A |
| Operating Altitude | <6561 ft (<2000 m) |
| Relative Humidity | 0 – 100% |
| Outdoor Rating | NEMA 3R |
| Operating Ambient Temperature Range | -40°F – 140°F (-40°C – 60°C) |
| Product Dimensions (HxWxD) | 31.5×19.7×7 in (800×500×178 mm) |
| Unit Weight | 55 lbs. (25 kg) |
| Standard Warranty | 10-year standard warranty |
Frequently-Asked Questions
Can the EG4 FlexBOSS21 operate both off-grid and grid-tied?
Yes! The FlexBOSS21 is a hybrid inverter, allowing full off-grid independence or grid-tied operation with battery backup for enhanced energy flexibility.
What is the function of the EG4 GridBoss system?
The GridBoss intelligently manages loads by prioritizing solar and battery power before utilizing grid energy, optimizing efficiency and cost savings.
Can I expand my system for more power?
Yes! The FlexBOSS21 supports parallel operation, allowing users to stack multiple units for greater energy needs.
Does it support remote monitoring?
Absolutely! The Wi-Fi and RS485 connectivity allow real-time monitoring and control via the EG4 app.
What Our Customers Say
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