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EG4 FlexBOSS 26K Titan Kit

EG4 FlexBOSS 26K Titan Kit

BY: EG4 | SKU: EG4-FB18x2-WM48x4-CB4-PC3-MID Availability: In Stock
$22,276.83

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EG4 FlexBOSS 26K Titan Kit

The EG4 FlexBOSS 26K Titan Kit delivers an all-in-one, high-capacity energy storage and hybrid power solution for residential and commercial systems. Designed for whole-home backup, off-grid installations, and energy independence, this powerhouse kit integrates advanced hybrid inverters with long-lasting lithium batteries to ensure seamless performance, scalability, and reliability.

Featuring EG4 FlexBOSS18 Hybrid Inverters paired with 48V PowerPro or WallMount Batteries, the Titan Kit provides intelligent load management, rapid transfer switching, and parallel scalability — capable of powering large homes, shops, or small commercial facilities. With UL certifications and smart monitoring integration, it’s the ultimate balance of performance and safety for next-generation solar systems.

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EG4 FlexBOSS 26K Titan Kit Features

High-Output Hybrid Power - The system combines two to three EG4 FlexBOSS18 Hybrid Inverters, delivering up to 26–39kW continuous AC output and up to 42kW PV input, ideal for powering entire households or light commercial loads.

Scalable Energy Storage - Configured with four to six 48V 280Ah (14.3kWh) LiFePO₄ batteries, offering 57.2kWh to 85.8kWh of total storage. Expandable to match your growing energy needs.

Indoor and Outdoor Battery Options - Choose between EG4 WallMount Indoor Batteries or EG4 PowerPro All-Weather Outdoor Batteries — each with integrated heating, smart BMS, and a 10,000+ cycle lifespan.

Advanced Energy Management -The FlexBOSS platform features hybrid inverter control, parallel stacking, split-phase support, and smart grid-interactive functionality for solar, generator, and grid input management.

UL & Safety Certified Components -All included batteries and inverters are UL 9540A, UL 1973, and UL 9540 compliant, ensuring unmatched safety, efficiency, and regulatory compliance.

Intelligent Monitoring and App Control -Monitor system performance, PV production, and battery status via the EG4 Monitoring Portal, compatible with local and remote access for complete system insight.

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EG4 FlexBOSS 26K Titan Kit Applications

  • Whole-Home Backup – Run essential or full-home loads with stable split-phase output.
  • Off-Grid Living – A complete, self-sufficient power solution for remote properties.
  • Commercial Backup – Reliable energy for small businesses and light industrial applications.
  • Solar + Storage Integration – Seamlessly connect with rooftop PV for energy savings and backup.
  • Disaster Preparedness – Maintain power independence during grid outages or emergencies.
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What's Included

Each EG4 FlexBOSS 26K Titan Kit includes the following high-performance components (varies by selected configuration):

Core Components

  • EG4 FlexBOSS18 13kW AC Hybrid Inverters

Battery

  • 48V EG4 WallMount Indoor Batteries with EG4 Indoor Buildable Conduit Boxes
  • 48V EG4 PowerPro Outdoor All-Weather Batteries with EG4 PowerPro Conduit Boxes

Accessories

  • EG4 PowerPro Battery Paralleling Cable Kits
  • 1EG4 GridBOSS 200A MID (optional with or without service entrance)

EG4 FlexBOSS18 13kW AC Hybrid Inverter Specifications

Specification Details
Dimensions 29.52 x 20.47 x 10.43 in. (750 x 520 x 265 mm)
Total Weight 115 lbs. (52 kg)
Mounting Option(s) Wall
User Interface APP/WEB/LCD (optional)
Scalability 10
Inverter Idle Consumption @No Load @(*Temp) <60W (Standby)
Noise <50dB @ 3 ft
Locked Rotor Amps (LRA) 195A

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 the EG4 FlexBOSS 26K Titan Kit operate fully off-grid?

Yes. This kit is designed for both grid-tied and off-grid systems, offering complete independence when disconnected from utility power.

Is it scalable for larger systems?

Absolutely. The system can be expanded by adding additional FlexBOSS inverters or battery modules to increase capacity as needed.

Can I use indoor or outdoor batteries interchangeably?

Yes. The kit supports both WallMount Indoor and PowerPro Outdoor battery types, depending on installation preferences.

Does the system include monitoring software?

Yes. The EG4 Monitoring Platform provides real-time data tracking, load management, and remote diagnostics.

What is the expected lifespan of the batteries?

The included LiFePO₄ batteries last for 10,000+ cycles—equivalent to over 10 years of daily use.