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Front Facing View of EG4 FlexBOSS18 Hybrid Inverter and EG4 314Ah Indoor WallMount Battery

EG4 FlexBOSS + WallMount Battery Bundle | Exclusive Pricing {BNDL-E0038}

Brand :

$8,051.95
$6,929.99
Add to Cart
SKU:
BNDL-E0038-314-18-2

Power Your Home for Less with Reliable Backup and Savings

Take advantage of this newly discounted bundle and power your home with confidence while saving more upfront. This limited-time offer pairs your choice of the EG4 FlexBOSS18 Hybrid Inverter or EG4 FlexBOSS21 Hybrid Inverter with 280Ah (14.3kWh) or 314Ah (16kWh) EG4 WallMount Battery options for indoor or outdoor installation—all bundled together at a newly reduced price for even greater value.

*Discount reflected in pricing. Special discounted pricing applies only to this bundle. Any additional purchases of individual components are sold at regular retail price.

Promotional image for energy storage systems with savings offer.

Designed for homeowners who want dependable backup power and meaningful energy savings, this system helps keep your lights on during outages while allowing you to use more of your own solar power to offset monthly utility bills. Whether you’re preparing for unexpected blackouts or looking to take control of rising energy costs, this discounted bundle makes it easier and more affordable than ever to invest in reliable home backup and long-term energy independence.

Key Benefits:

FlexBOSS21 and FlexBOSS18

  • Cost-effective Entry into Hybrid Solar: Affordable solution for users seeking to enter the hybrid solar market without compromising on performance.

  • Flexible Installation Options: Offers versatility in setup, making it suitable for both residential and commercial applications

280Ah and 314Ah WallMount Batteries

  • Built for Outdoor Use (All Weather WallMounts ONLY): IP65 (280Ah) and IP67 (314Ah) enclosures protect against dust, water, and harsh conditions and allow for safe outdoor installations
  • Emergency Stop Function: Enables complete system shutdown via RSD, ESS disconnect, or inverter RSD for fast response in critical situations.
  • Integrated Self-Heating: Automatically warms the battery in low temperatures to maintain optimal performance in cold climates
  • Built-In Safety Measures: Dual on-board fire arrestors provide added safety and peace of mind for any installation

Use Cases:

This bundle lets homeowners secure reliable backup power and maximize solar energy savings, keeping their home running during outages while lowering monthly utility costs.

Tech Specs:

FlexBOSS21

  • Max Continuous Output (w/ PV & Grid): 16kW | 66.7A @ 240V
  • Max Discharge Current (from batteries): 250A

FlexBOSS18

  • Recommended Max PV Input Power: 18kW
  • Nominal Input/Output Voltage: 120/240VAC

280Ah WallMounts

  • Max Continuous Discharge Current: 140A
  • Operating Altitude: <16,404ft

314Ah WallMounts

  • Operating Altitude: < 9,843ft
  • Max Continuous Discharge Current: 200A

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

Your Choice of Inverter:

EG4 FlexBOSS21 Hybrid Inverter
End Clamp for Mini Rail 30mm close up view

Or:

EG4 FlexBOSS18 Hybrid Inverter

Front and rear view of BlueSun 460W Bifacial Solar Panel pallet quantity

Your Choice of Battery:

EG4 280Ah Indoor WallMount

Or:

EG4 280Ah All Weather WallMount

Or:

EG4 314Ah Indoor WallMount
Growatt USB Monitoring Stick, model ShineWiFi-F, used for remote monitoring and management of solar power systems via Wi-Fi

Or:

EG4 314Ah All Weather WallMount

 

Relevant Videos

EG4 FlexBOSS 21 - Load Testings

Join Ray as he takes the EG4 FlexBOSS21 to the limit in a hands-on, real-world performance test of the EG4 FlexBOSS21 Hybrid Inverter. This isn’t a spec-sheet overview — it’s a full stress test designed to show what this inverter can really handle. Ray measures idle consumption to see how efficiently it runs when demand is low, then cranks things up with heavy, unbalanced loads to challenge the inverter’s split-phase capability. To push things even further, he disconnects the grid entirely and powers the system solely from the EG4 280Ah WallMount Indoor Battery, putting both the inverter and battery through a true off-grid scenario. If you’re curious how the FlexBOSS21 performs under pressure — and whether it lives up to the hype — this test delivers results that are both surprising and seriously impressive.

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.

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