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FlexBOSS 32K PowerHouse Kit

FlexBOSS 32K PowerHouse Kit

BY: EG4 | SKU: EG4-WM4-N Availability: In Stock
$23,430.98

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FlexBOSS 32K PowerHouse Kit

The FlexBOSS 32K PowerHouse Kit is a high-performance, all-in-one energy solution designed for complete home backup, off-grid systems, and hybrid energy management. Featuring dual EG4 FlexBOSS21 16kW Hybrid Inverters paired with EG4 PowerPro All-Weather Lithium Batteries, this system delivers reliable power for demanding residential or light commercial applications. With smart parallel capability, advanced monitoring, and outdoor-rated components, the FlexBOSS 32K provides long-lasting energy independence, weather resistance, and future-ready scalability.

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FlexBOSS 32K PowerHouse Kit Features

Massive 32kW Continuous Power Output - Powered by two EG4 FlexBOSS21 Hybrid Inverters, the system delivers 32kW of continuous power and 42kW of PV input capacity, ensuring uninterrupted performance for large homes and critical systems.

All-Weather Battery Design - Includes four EG4 48V All-Weather Lithium Batteries (280Ah, 14.3kWh each) for a total of 57.2kWh usable capacity. These UL1973 and UL9540A-certified LiFePO₄ units are built for indoor or outdoor installation, with integrated heating and IP65 protection.

Scalable & Parallel-Ready System - Comes with three EG4 PowerPro Parallel Cable Kits and four EG4 PowerPro Conduit Boxes for safe, modular expansion. Add more batteries or inverters as your energy demands grow.

Smart Hybrid Operation - The FlexBOSS21 inverters automatically manage power from solar, grid, and battery sources, providing seamless transitions and maximum efficiency whether you’re on-grid or off-grid.

Remote Monitoring and Management - Track performance, adjust settings, and access detailed analytics through EG4’s smart monitoring platform—accessible from desktop or mobile devices.

Optional Grid Automation - Integrate the EG4 GridBOSS 200A MID (included) for automated control of grid-tied operations, allowing full power management, seamless switching, and optimized energy routing.

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FlexBOSS 32K PowerHouse Kit Applications

  • Whole-Home Backup – Power entire households, including HVAC, refrigeration, and high-load appliances.
  • Off-Grid Cabins & Residences – Achieve total energy independence with scalable solar and storage capacity.
  • Light Commercial Use – Ideal for small offices, agricultural setups, and workshops.
  • Hybrid Systems – Combine grid-tied flexibility with off-grid reliability for any environment.
  • Sustainable Energy Homes – A smart choice for energy-efficient, eco-conscious households
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What's Included

Everything you need is included with your product.

  • 2 × EG4 FlexBOSS21 16kW (21kPV) Hybrid Inverter
  • 4 × 48V EG4 WallMount Indoor Battery with 4 × EG4 Indoor Buildable Conduit Box
  • 4 x EG4 PowerPro WallMount AllWeather Lithium Battery with EG4 PowerPro Conduit Box
  • 3 × EG4 PowerPro Parallel Cable Kit
  • 1x EG4 GridBOSS 200A MID (Optional)
  • User Manual

EG4 FlexBOSS21 All-in-One Hybrid Inverter Specification

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 WallMount Indoor Battery 280AH | 51.2V Specifications

Specification Details
Communication Ports RS485/CAN Can be customized
Cycle Life >8000 Cycles, 80% Depth of Discharge (DOD)
Design Life Over 15 Years
Weight 282.2 lbs. (128 kg)
Safety Certifications UL1973, UL 9540A (Testing)
Voltage 51.2V
Total Energy Capacity 14.3kWh
Capacity 280Ah
Charging Voltage (Bulk/Absorb) 56.0V (+/-0.8V) to 56.2V (+/-0.2V)
Float Voltage 54V (+/-0.2V)
Low DC Cutoff 44.8V (adjustable start from 47V to 45.6V)
Charging Current Up to 200A (continuous), recommended range: 60A - 160A
Discharging Current Up to 200A (continuous), recommended: 160A

EG4 PowerPro WallMount All-Weather Lithium Battery Specifications

Specification Details
Battery Type LiFePO4 (Lithium Iron Phosphate, Grade A)
Voltage 48V (Nominal: 51.2V, Float: 54V)
Continuous Charge/Discharge Current 200A (Max)
Capacity 14.3kWh
BMS 200A
Weight 308.6 lbs. / 140Kg

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 this kit power an entire home?

Yes. The system’s 32kW power output and 57.2kWh battery storage can easily support full household loads including HVAC systems, well pumps, and major appliances.

Are the batteries weatherproof?

Yes. The EG4 All-Weather batteries are rated IP65, offering protection from dust, rain, and temperature fluctuations, and are suitable for outdoor installations.

Can this system operate off-grid?

Absolutely. The hybrid inverters allow off-grid, grid-tied, or hybrid configurations, giving flexibility based on your energy needs.

Can I expand storage capacity in the future?

Yes. You can add additional All-Weather batteries or inverters using the included parallel kits and conduit boxes for a safe, scalable setup.

Is the GridBOSS 200A MID required?

It’s optional but recommended for users planning grid-tied automation or advanced load management.