EG4 FlexBOSS Inverter V.1.1 | 48V Split Phase | 21kW PV Input + EG4 GridBOSS MID V3 Bundle - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EG4 FlexBOSS21 Hybrid Inverter | 48V Split Phase | 21kW PV Input - ShopSolar.com
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EG4 GridBOSS MID V# | 200A Service Entrance - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EG4 GridBOSS MID V# | 200A Service Entrance - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EG4 GridBOSS MID V# | 200A Service Entrance - ShopSolar: Complete Solar Kits + Lifetime Customer Support
EG4 FlexBOSS Inverter V.1.1 | 48V Split Phase | 21kW PV Input + EG4 GridBOSS MID V3 Bundle - ShopSolar.com
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EG4 FlexBOSS21 Hybrid Inverter | 48V Split Phase | 21kW PV Input - ShopSolar.com
EG4 FlexBOSS21 Hybrid Inverter | 48V Split Phase | 21kW PV Input - ShopSolar.com
EG4 FlexBOSS21 Hybrid Inverter | 48V Split Phase | 21kW PV Input - ShopSolar.com
EG4 FlexBOSS21 Hybrid Inverter | 48V Split Phase | 21kW PV Input - ShopSolar.com

EG4  ·  Inverter/Charger

SKU: BNDL-E0019-3

EG4 FlexBOSS21 Hybrid Inverter + GridBOSS MID V3.1 Bundle

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Power your entire home with confidence using the EG4 FlexBOSS21 + GridBOSS MID V3.1 Bundle—a streamlined, high-performance solution designed for full energy independence without the hassle of main panel upgrades or subpanels.

$5,473.88
$5,473.88
$7,639.00
You save $2,165.12
Pay over time at checkout.
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30-day returns
Lifetime support by phone, chat & email
Full manufacturer warranty

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Specifications

The details.

Power your entire home with confidence using the EG4 FlexBOSS21 + GridBOSS MID V3.1 Bundle—a streamlined, high-performance solution designed for full energy independence without the hassle of main panel upgrades or subpanels.

This bundle combines the 21kW PV-capable FlexBOSS21 hybrid inverter with the next-gen GridBOSS microgrid controller, delivering reliable whole-home backup, remote monitoring, and simplified installation—all while saving you up to $7,500 in materials and labor.

Key Features & Benefits:

  • True Whole-Home Backup – Power your entire home without upgrading your main panel or using a critical load panel.

  • Massive 21kW PV Input – Run high-demand appliances, including 5-ton AC units, with support for 600V DC PV input.

  • Smart Monitoring & Control – Full remote access, system monitoring, and mobile alerts with the latest EG4 software.

  • Expandable System – Parallel up to 10 FlexBOSS21 units for up to 160kW total output.

  • Space-Saving & Simplified Setup – GridBOSS replaces breakers, transfer switches, and load centers in one compact unit.

  • 200A Service Entrance – 22 kAIC main breaker for robust utility, generator, and inverter integration.

  • Hybrid-Ready – Operate off-grid, on-grid, or sell excess power back to the grid.

  • Future-Proof Design – Supports both copper and properly sized aluminum wire on select breakers.

Why Choose the EG4 FlexBOSS21 + GridBOSS Bundle?

✅ Seamless System Integration – Effortlessly connects solar, battery storage, grid, and generator inputs for a fully optimized Energy Storage System (ESS).
✅ High-Powered Performance – 16kW continuous output (PV input) with 24kW surge capacity to handle heavy loads.
✅ Smart Load Management – Automates power distribution for battery longevity and efficiency.
✅ Real-Time Remote Monitoring – Adjust settings, track performance, and receive alerts via the EG4 app or web platform.
✅ Safety & Compliance – UL-certified components with advanced protections, including rapid shutdown, arc-fault detection, and ground fault monitoring.

💡 Simplify your solar and energy storage setup today with the EG4 FlexBOSS21 & GridBOSS Bundle—power, control, and reliability in one package. 🚀

 

User Manual / Documents:

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
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

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