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EG4 | FlexBOSS18 13kW AC Hybrid Inverter | 48V Split Phase | 18kW PV Input

by EG4
SKU EG4FLEXBOSS18
Original price $3,699.00 - Original price $3,699.00
Original price
$3,699.00
$3,699.00 - $3,699.00
Current price $3,699.00

Overview

EG4 FlexBOSS18 Hybrid Inverter | 48V Split Phase | 18kW PV Input

Reliable Performance, Affordable Price
The EG4 FlexBOSS18 delivers 13kW of continuous output (with PV), 18kW solar input, and 10kW battery-only output—perfect for both grid-tied and off-grid setups. Designed for installers and DIYers alike, it offers efficiency and value in one compact unit.


Key Features:

  • 13kW Continuous Output (PV), 18kW PV Input, 10kW Battery Output

  • Works with EG4 Batteries and GridBOSS MID

  • UL1741 Certified for compliance

  • Cost-Effective Hybrid Solution

  • Suitable for Residential & Commercial Use


Seamless GridBOSS MID Integration

Pairing with the EG4 GridBOSS MID simplifies installation, removes the need for extra components, and unlocks smart features like time-of-use control, load shifting, and backup prioritization.


Why Choose FlexBOSS18?

It offers powerful hybrid features, higher PV support, and certified safety—all at a competitive price. Great for anyone seeking reliable, scalable solar performance.


Power Your System with Confidence

Whether you're starting fresh or upgrading, the FlexBOSS18 gives you smart, dependable energy control—without breaking the bank.

What's Included

(1) Hybrid Inverter  
(1) Wi-Fi Dongle  
(1) Wall Mount Template  
(2) 1” CTs (Current Transformers)  
(2) L Brackets  
(4) RJ485 Terminals  
(1) Mounting Bracket  
(4) Phillips Head Screws (M5x10)  
(4) Phillips Head Screws (M3x10)  
(1) Battery Communication Cable, 2m (Orange)  
(1) Parallel Communication Cable, 2m (Grey)  
(6) Sheet Metal/Wood Screws  
(6) Expansion Bolts  

Specifications & Manuals

Spec Sheet

Manual

Warranty

10-Year Warranty

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Warranty Registration and Validity

Your warranty must be registered within the first year of purchase or you must provide proof of purchase from Solar Guys Pro, an EG4 authorized distributor, for it to remain valid. Failure to register or provide proof of purchase may result in an invalidated warranty. This limited warranty applies to the original purchaser and is transferable one time only if the product remains in the original installation location. All parts exchanges are covered during the warranty period, but replacement shipping charges may apply outside the continental US.

Warranty Exclusions: EG4 Electronics is not obligated under this limited warranty for products subjected to the following conditions (including but not limited to):

1) Damages incurred during installation, reinstallation, or removal
2) Poor workmanship by an individual, installer, or firm
3) Damages from mishandling or inappropriate environmental exposure
4) Damages from improper maintenance or operating outside specified conditions
5) Tampering, altering, or disassembly of the product
6) Using the product in unintended applications
7) Damages from lightning, fire, flood, earthquake, riots, or acts of God
8) Products with altered, defaced, or removed serial numbers
9) Unauthorized firmware updates, upgrades, or patches
10) Damages from voltage or current spikes due to open-loop lithium battery communications

EG4 product warranty is a limited warranty – EG4’s liability in the event of a product defect is limited to repair or replacement under the terms of this warranty. EG4 is not responsible for any additional or indirect damages arising from the product malfunction. This includes incidental or consequential damages, such as loss of revenue, profits, or time. EG4 is not liable for any direct or indirect loss of life, bodily injury, illness, or death arising from misuse or mishandling of the product, whether caused by negligence or otherwise.

Return Policy

For returns, please contact us at: 571-350-0146 or email us at: info@solarguyspro.com. To view our return policy, please go: HERE

Warranty Claims Procedure

To initiate a warranty claim, contact our customer service team via phone at 571-350-0146 or email at info@solarguyspro.com to request an RMA. Warranty claims can also be initiated through the official EG4 website (https://eg4electronics.com/warranty).

Contact Information:
- Email: info@solarguyspro.com
- Phone: +1571-350-0146

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Sales Tax Free
Authorized Dealer Warranty
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Frequently Asked Questions

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USA Based Tech & Customer Support Got a question? Speak to our USA based tech & customer support team: 571-350-0146
#1 DIY Solar Authorized Retailer
Fast & Safe Shipping
Sales Tax Free
Authorized Dealer Warranty