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EG4 Hybrid Power Kit | 32kW 120/240V Output 48VDC - 57.2kWh System Bundle | 2 x EG4 FlexBOSS21 Hybrid Inverter + 4 x EG4 PowerPro Wallmount Outdoor Battery
This EG4 bundle includes (2) 16kW FlexBOSS21 Hybrid Inverters and (4) 14.3kWh PowerPro Wallmount Outdoor Batteries. Built for durability and outstanding performance, this powerful system provides continuous power for large homes or commercial properties. Featuring advanced technology and ample energy storage, it offers reliable backup during outages, delivering an efficient, seamless energy solution you can trust.

The EG4 FlexBOSS21 is a split phase, all-in-one, hybrid inverter designed for the residential and small commercial markets. With a 21kW usable PV (DC) input, the FlexBOSS21 provides high power output, generating 12kW of AC power during non-sunlight conditions and a full 16kW AC with solar PV gain. It is a powerful and versatile inverter which can feed-through 90 Amps of utility power from the grid at 120/240 VAC.
The FlexBOSS21 is an enhanced cousin to EG4’s flagship 18kPV inverter that has been designed to optimally work with EG4’s GridBOSS MID (power gateway). The combination of FlexBOSS21 and GridBOSS significantly reduces installation expenses by replacing unnecessary components and reducing installation time. This makes the FlexBOSS21-GridBOSS combination an unbeatable choice for customers looking to build powerful, cost-effective and scalable solar systems.

The EG4 PowerPro EG4’s versatile Energy Storage Systems (ESS) store energy from renewable sources for times of low availability, power loads during grid outages, and shift grid usage to off-peak hours (or peak shave). Additionally, they contribute to grid stability by smoothing out demand, reducing peak loads that strain the grid. Key components of an ESS include batteries, a Hybrid inverter, a solar charge controller, and solar panels, alongside Balance of System components like wires and fuses.
K0115 Includes
- 4xEG4 WallMount 280Ah All Weather | 48V - 14.3kWh | UL1973 | Home Battery Backup LFP
- 4xEG4 All Weather Conduit Box
- 3xEG4 All Weather & Indoor Parallel Cable Kit
- 2xEG4 FlexBOSS21 Hybrid Solar Inverter | 21kW PV / 16kW AC | Split-Phase | 4-MPPT | Scalable | Remote Wi-Fi Monitoring
Product Specifications
EG4 FLEXBOSS21 16kW 48V Hybrid Split Phase Inverter/Charger Product Specifications
| Specification | Details |
|---|---|
| PV Input | 21kW max usable, 24kW max input |
| On-Grid AC Output | Continuous: 16kW @ 240V, 13.8kW @ 208V |
| Delivers 16kW to grid or load with PV/battery; 12kW to loads/battery without PV | |
| AC Output | Nominal Current: 50A |
| Nominal Output Voltage: 120/240V, 120/208V, 240V | |
| Continuous Output Power: 12000VA | |
| Starts a 5-ton AC unit easily | |
| Dimensions | 30.4 × 22.3 × 11.2 in. |
| Weight | 88 lbs. |
| Warranty | 10 years |
EG4 PowerPro WallMount AllWeather Lithium Battery | Product Specifications
Voltage: 51.2V
Capacity: 280Ah
Dimensions: 34.6 × 22.3 × 9.1 in. (88 × 56.6 × 23.2cm)
Weight: 308.6 lbs. (140 kg)
Design Life: 8000 Deep Cycles
Certs: UL 1973
Lifetime Production: 82.6MWh
Product Manual
EG4 FLEXBOSS21
EG4 Product Manual
EG4 Specs Sheet
EG4 PowerPro WallMount Battery Product Manuals
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
EG4 Hybrid Power Kit | 32kW 120/240V Output 48VDC - 57.2kWh System Bundle | 2 x EG4 FlexBOSS21 Hybrid Inverter + 4 x EG4 PowerPro Wallmount Outdoor Battery
This EG4 bundle includes (2) 16kW FlexBOSS21 Hybrid Inverters and (4) 14.3kWh PowerPro Wallmount Outdoor Batteries. Built for durability and outstanding performance, this powerful system provides continuous power for large homes or commercial properties. Featuring advanced technology and ample energy storage, it offers reliable backup during outages, delivering an efficient, seamless energy solution you can trust.

The EG4 FlexBOSS21 is a split phase, all-in-one, hybrid inverter designed for the residential and small commercial markets. With a 21kW usable PV (DC) input, the FlexBOSS21 provides high power output, generating 12kW of AC power during non-sunlight conditions and a full 16kW AC with solar PV gain. It is a powerful and versatile inverter which can feed-through 90 Amps of utility power from the grid at 120/240 VAC.
The FlexBOSS21 is an enhanced cousin to EG4’s flagship 18kPV inverter that has been designed to optimally work with EG4’s GridBOSS MID (power gateway). The combination of FlexBOSS21 and GridBOSS significantly reduces installation expenses by replacing unnecessary components and reducing installation time. This makes the FlexBOSS21-GridBOSS combination an unbeatable choice for customers looking to build powerful, cost-effective and scalable solar systems.

The EG4 PowerPro EG4’s versatile Energy Storage Systems (ESS) store energy from renewable sources for times of low availability, power loads during grid outages, and shift grid usage to off-peak hours (or peak shave). Additionally, they contribute to grid stability by smoothing out demand, reducing peak loads that strain the grid. Key components of an ESS include batteries, a Hybrid inverter, a solar charge controller, and solar panels, alongside Balance of System components like wires and fuses.
K0115 Includes
- 4xEG4 WallMount 280Ah All Weather | 48V - 14.3kWh | UL1973 | Home Battery Backup LFP
- 4xEG4 All Weather Conduit Box
- 3xEG4 All Weather & Indoor Parallel Cable Kit
- 2xEG4 FlexBOSS21 Hybrid Solar Inverter | 21kW PV / 16kW AC | Split-Phase | 4-MPPT | Scalable | Remote Wi-Fi Monitoring
Product Specifications
EG4 FLEXBOSS21 16kW 48V Hybrid Split Phase Inverter/Charger Product Specifications
| Specification | Details |
|---|---|
| PV Input | 21kW max usable, 24kW max input |
| On-Grid AC Output | Continuous: 16kW @ 240V, 13.8kW @ 208V |
| Delivers 16kW to grid or load with PV/battery; 12kW to loads/battery without PV | |
| AC Output | Nominal Current: 50A |
| Nominal Output Voltage: 120/240V, 120/208V, 240V | |
| Continuous Output Power: 12000VA | |
| Starts a 5-ton AC unit easily | |
| Dimensions | 30.4 × 22.3 × 11.2 in. |
| Weight | 88 lbs. |
| Warranty | 10 years |
EG4 PowerPro WallMount AllWeather Lithium Battery | Product Specifications
Voltage: 51.2V
Capacity: 280Ah
Dimensions: 34.6 × 22.3 × 9.1 in. (88 × 56.6 × 23.2cm)
Weight: 308.6 lbs. (140 kg)
Design Life: 8000 Deep Cycles
Certs: UL 1973
Lifetime Production: 82.6MWh
Product Manual
EG4 FLEXBOSS21
EG4 Product Manual
EG4 Specs Sheet
EG4 WALLMOUNT ALL WEATHER BATTERY – BROCHURE



















