Skip to content
Enjoy Free USA Shipping On All Orders
Enjoy Free USA Shipping On All Orders

EG4 FlexBoss18 Hybrid Inverter

BRAND:

| SKU:

INV031

$3,499.00
Free shipping with delivery between Apr 02 - Apr 09
Quantity

#1 Authorized EG4 Distributor

All products come with manufactured warranties

Free Shipping + No Sales Tax
 

More money in your pockets for your renewable

Hassle-Free Returns & Exchanges

Safe shopping for your hard-earned money

Talk To A Real Person
 

Get help from our specialists — 

live chat or call anytime

EG4 FlexBoss18 Hybrid Inverter | 13kW Output

48V Split-Phase Hybrid Inverter/Charger with 18kW PV Input, Grid-Tied & Off-Grid Ready, UL1741 Certified

The EG4 FlexBOSS18 Hybrid Inverter is engineered for high efficiency, powerful output, and maximum flexibility across residential and commercial energy systems. Delivering 13kW continuous AC output with solar and 10kW from batteries alone, it ensures reliable performance during peak loads and outages. With up to 18kW solar input and industry-leading efficiency ratings, this inverter maximizes energy harvest while minimizing loss. Designed for seamless integration with EG4 batteries and advanced energy management systems, it supports grid-tied, off-grid, and hybrid configurations with intelligent monitoring and control.

Key Features:

  • 13kW Continuous Output (PV) / 10kW Battery Output: Handles high-demand loads like HVAC systems.
  • Up to 18kW Solar Input: Capture more energy with higher PV capacity.
  • High Efficiency Performance: 99% MPPT efficiency, 97.5% PV-to-grid, and 94% battery-to-grid efficiency.
  • Flexible System Design: Supports grid-tied, off-grid, and hybrid applications.
  • Closed-Loop Battery Communication: Optimized performance with EG4 batteries.
  • Advanced Energy Management: Compatible with GridBOSS MID for load shifting and time-of-use optimization.
  • Built-in Rapid Shutdown (RSD): NEC 690.12 compliant for enhanced safety.
  • Comprehensive Protection Features: Includes AFCI, GFCI, over-voltage, short circuit, and reverse polarity protection.
  • Wi-Fi Monitoring Included: Real-time system tracking via EG4 app.
  • Compact Wall-Mount Design: Easy installation with reduced system complexity.

Technical Specifications:

  • AC Output: 13kW (PV) / 10kW (Battery)
  • PV Input: Up to 18kW
  • Max PV Voltage: 600VDC
  • MPPT Efficiency: 99%
  • PV-to-Grid Efficiency: 97.5%
  • Battery-to-Grid Efficiency: 94%
  • Certification: UL1741

Ideal Applications:

  • Residential whole-home backup systems
  • Off-grid homes and remote cabins
  • Grid-tied systems with battery storage
  • Small commercial and business installations
  • DIY solar and battery storage projects

What’s Included:

  • 1 × EG4 FlexBoss18 Hybrid Inverter
  • Wi-Fi monitoring module
  • User manual and installation guide

Specifications

Parameter Details
Power & Electrical Specifications
ModelEG4 FlexBOSS18 (IV-13000-HYB-AW-FX-00)
AC Output Power13kW Continuous (with PV)
Battery-Only Output10kW Continuous
Nominal AC Voltage120/240V Split Phase, 208V AC
Surge Capacity156A Peak
Solar (PV) Input Specifications
Max PV Input18kW
Max PV Input Voltage600VDC
Number of MPPTs2
MPPT Efficiency99%
PV-to-Grid Efficiency97.5%
Battery Specifications
Battery Voltage48VDC
Battery-to-Grid Efficiency94%
Monitoring & Protection
MonitoringWi-Fi (EG4 App)
Protection FeaturesPV reverse polarity, over-voltage, short circuit, AFCI, GFCI
Compliance & Physical
CertificationsUL1741, NEC 690.12 (RSD)
Weight115 lbs (approx.)

Understanding Your Power Needs

Power Calculation Guide

Sizing Metric Formula & Example
Energy Consumption (Wh) Formula: Watts × Hours
Example: 60W × 4 hrs = 240 Wh
Battery Capacity (Ah) Formula: Watt-hours ÷ System Voltage (V)
Example: 240 Wh ÷ 12V = 20 Ah
Inverter Size (W) Formula: Total Watts × 1.25 (safety margin)
Example: 300W × 1.25 = 375W → Use 400W inverter
Total Load Power (W) Formula: Sum of all appliance watts used simultaneously
Example: Light (10W) + Fan (75W) = 85W
Runtime (hrs) of Battery Formula: (Battery Ah × Voltage) ÷ Total Load (W)
Example: (100Ah × 12V) ÷ 240W = 5 hrs

Find Your Power Match

Need / Application System Recommendation
Basic lighting + phone charging Recommended Battery: 50Ah – 100Ah (12V)
Inverter Size: 100W – 200W
Notes: For small backup setups
Home office (laptop, fan, TV) Recommended Battery: 150Ah – 200Ah (12V or 24V)
Inverter Size: 500W – 1000W
Notes: For moderate usage with 4–6 hours of backup
Home backup (fridge, lights) Recommended Battery: 200Ah+ (24V or 48V recommended)
Inverter Size: 1000W – 1500W
Notes: Ideal for longer backups or heavier loads
Business / shop power backup Recommended Battery: 300Ah+ (48V system)
Inverter Size: 2000W – 3000W
Notes: Suitable for commercial setups or extended power outages

Why Shop With Us

  • Authorized & Trusted Dealer: We’re fully authorized for every brand we carry, so you get genuine products backed by full manufacturer warranties.
  • Fast, Reliable Shipping: Shipped from U.S. warehouses with quick, dependable freight options — keeping your project on track.
  • 30-Day Hassle-Free Returns: Changed your mind? Enjoy a simple 30-day return process for peace of mind.
  • Real Human Support, 7 Days a Week: Reach us by phone, email, or live chat — no bots, no overseas call centers, just experts who know off-grid power systems.
  • Expert Energy Guidance: Our solar and backup energy specialists are here to help with system design, product questions, and installation tips.
  • USA-Based Service: Local, knowledgeable, and friendly support right here in the U.S.
  • Secure Payments: Shop confidently with encrypted, secure checkout protecting your personal and payment information.
  • Built for Energy Independence: Whether powering a cabin, prepping for emergencies, or going off-grid, our products are chosen for performance, reliability, and sustainability.

EG4 FlexBoss18 Hybrid Inverter

$3,499.00