-
files/FLEXBOSS18-3.png
-
files/FLEXBOSS18-1-1.png
-
files/FLEXBOSS18-2.png
-
files/FLEXBOSS18-1.png
-
files/1x_Inverter_b185caf9-96bf-406a-b9d9-e9e647c484ed.png
-
files/2x_Inverter_1550b068-a5de-4c1e-88ca-19afe57d2b6a.png
-
files/3x_Inverter_e4cf292e-9c14-407e-8a50-135c994f3c25.png
-
files/download_c3fbbfdd-0d0e-4aff-ade6-78adcbf59f59.png
-
files/gotolink_40cfc46f-146c-4597-81f7-f0166a237f60.png
-
files/EG4_GridBOSS_Front.png
-
files/FlexBoss18-Simple-System-Expansion-Final.png
-
files/EG4-Inverter-Certification.png
-
files/All-EG4.png
BigBattery | EG4 FlexBOSS18 Hybrid Solar Inverter | 18kW PV / 13kW AC | Split-Phase | 3-MPPT | Scalable | Remote Wi-Fi Monitoring | INV031
- Regular price
- $3,499.00
- Regular price
- $3,499.00
- ✓Authorized Online Dealer
- ✓Free Shipping · No Sales Tax (excluding MI)
- ✓Lowest Price Guarantee
- ✓Ships in 1–2 business days · 4–7 day transit
- ✓Questions? Call us at (734) 228-0441
Product Description
The EG4 FlexBOSS18 is a high-capacity, split-phase hybrid inverter built for powerful residential or commercial energy systems. With 18,000W of PV input, dual MPPTs supporting 4 strings, and 90A grid feed-through at 120/240VAC, it delivers superior flexibility and grid-tied reliability. Seamlessly pairing with EG4’s GridBOSS MID gateway, the FlexBOSS18 enables smart load management, AC coupling, and generator support while reducing installation time and costs. Safety features include rapid shutdown, ground fault and arc fault protection, plus industry-leading certifications. With remote monitoring, Wi-Fi connectivity, and mobile alerts, the FlexBOSS18 offers efficient, scalable power with advanced control. Elevate your solar or off-grid system with this powerful, future-ready inverter.
Customers also bought
Complementary products
Let customers speak for us
Works great the auto deploy option is life changing
Our 6x8 shelter is huge. More than enough space for our extended family.
The 4x8 shelter is spacious and feels very safe. Glad we made the investment.
Bought the 8-person model — heavy duty and exactly what we needed for our family.
We went with the 5-person shelter. The steel feels rock solid and gives real peace of mind.
Quiet and powerful, performs well in saltwater.
I bought the blue version for my son — fast shipping and solid build. He rides it every weekend.
The build quality is top-notch.
Customer service helped me decide between the green and red. Ended up with green and love it.
Works fine, but the setup guide could be more detailed.
Took it out this weekend, no issues at all.
Ordered the MotoTec Pro 60v Blue. Arrived on time and packaged well.
Smooth performance and quick delivery.
I chose the blue bike. Works great, though the shipping box had a small dent — no damage to the bike.