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Front view of EG4 FlexBOSS21 and EG4 314Ah Indoor WallMount Battery with conduit box

EG4 FlexBOSS21 | EG4-WallMount Indoor Battery Bundle [BNDL-E0023]

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$8,047.98
$7,429.88
Add to Cart
SKU:
BNDL-E0023-1-1-1
Kit Type:
Residential

EG4 FlexBOSS21 Home Backup Power Bundle – Reliable Energy for Everyday Living and Outages

The EG4 FlexBOSS21 + WallMount Indoor Battery Bundle delivers a powerful, all-in-one solution for whole-home energy independence, backup, and savings. Designed to seamlessly integrate solar, battery, and grid power, this system gives you reliable control over your energy—keeping your home running smoothly during outages while maximizing everyday efficiency.

**Please Note: EG4 FlexBOSS21 LCD Screen Kit sold separately.

GridBOSS FlexBOSS21 product advertisement with images of appliances and features.

Key Benefits:

    • Whole-Home Backup Confidenc: Keep essential systems—and even large loads like a 5-ton AC—running without interruption during outages.
    • High Solar Input for Maximum Production: Supports up to 21kW of PV input with three MPPTs, helping you capture more energy throughout the day.
    • Flexible Energy Control: Operate off-grid, use grid support, or sell excess energy back—giving you full control over how you power your home.
    • Smart Monitoring & Remote Access: Manage your system from anywhere with EG4 monitoring software, including real-time data and mobile alerts.
    • Safe, Certified, and Built to Last: Advanced protections including rapid shutdown, arc fault detection, and a robust BMS for long-term reliability.

Use Cases:

Ideal for homeowners and small businesses looking for a dependable, scalable energy solution. Perfect for whole-home backup, off-grid living, or reducing reliance on the grid through solar self-consumption and time-of-use savings—all while maintaining seamless, uninterrupted power.

Tech Specs:

EG4 FlexBOSS21 Inverter

    • PV Input: Up to 21kW
    • Max PV Voltage: 600V DC
    • Output: Split-phase 120/240V
    • Certifications: UL 1741, CEC Listed

EG4 314Ah Indoor Wallmount 

    • Nominal Voltage: 51.2V
    • Capacity: 314Ah
    • Energy: 16 kWh
    • Max Continuous Output: 200A
    • Peak Output: 12.8 kW

Please Note: Lifetime Customer Support is based in Texas and available via phone and email. We strongly recommend using a certified solar installer and/or master electrician for professional installation. Please note that additional components may be required for your installation.

Have questions or need assistance? Our support team is here to help! Give us a call at 903-441-2090.

Product Image Product Information
EG4 18KPV Hybrid Inverter | All-In-One Solar Inverter | 18000W PV Input | 12000W Output | 48V 120/240V Split Phase | EG4-18KPV-12LV

1-2x EG4 FlexBOSS21 Hybrid Inverter

EG4 280Ah and 314Ah Buildable Conduit Box

1 Battery Option: 1x

2 Battery Option: 2x

3 Battery Option: 3x

4 Battery Option: 4x

6 Battery Option: 6x

EG4 Indoor Buildable Conduit Box front facing

EG4 280Ah/314Ah WallMount Battery Paralleling Cable Kit

1 Battery Option: NA

2 Battery Option: 1x

3 Battery Option: 2x

4 Battery Option: 3x

6 Battery Option: 5x

1-6x EG4 314Ah Indoor WallMount Battery

 

Relevant Videos

EG4 FlexBOSS21 - Load Testing

In this video, we put the EG4 FlexBOSS21 Hybrid Inverter to the test and explore what makes it one of the most capable home and off-grid power solutions available today. We start with an Intro and quick overview of the system, followed by a deep dive into idle consumption to see how efficiently the unit operates when under minimal load. Next, we push the FlexBOSS21 to its limits with a heavy unbalanced load test, showcasing its ability to handle demanding real-world conditions. Then, we switch to a no grid scenario to see how it performs completely off-grid. Finally, we wrap up with a conclusion highlighting performance insights, efficiency results, and our overall take on the FlexBOSS21’s hybrid power capabilities.

The EG4 WallMount 314Ah Indoor Battery | Overview & Features

Looking for a reliable indoor battery for whole-home backup and energy storage? In this video, we take a deep dive into the EG4 WallMount 314Ah Indoor Battery, a compact yet powerful solution built for homes and small businesses that value safety, efficiency, and uptime. With 16kWh of usable energy, 314Ah capacity, and 200A continuous discharge, the EG4 WallMount is designed to handle heavy household loads while staying quiet, compact, and easy to manage. Whether you’re pairing it with solar, optimizing time-of-use energy costs, or preparing for grid outages, this battery delivers consistent, dependable performance.

Kit Type:
Residential

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