BigBattery - EG4 GridBOSS 200A MID
SAVE! 3–5% with bank transfer on orders over $5,000
SAVE! 3–5% with bank transfer on orders over $5,000
The EG4 GridBOSS MID is a high-performance power gateway that transforms complex energy setups into streamlined, centralized systems. Designed to replace up to ten separate components, this 200A-rated hub is ideal for whole-home backup, off-grid solar ESS, and commercial power systems.
With the ability to connect utility power, up to three 90A inverters, and four programmable smart ports, the GridBOSS MID offers full control over high-demand loads, generator inputs, and AC coupling—all in one compact unit. It eliminates the need for transfer switches, extra breakers, and tangled wiring, simplifying installations and reducing costs significantly.
All-in-One Energy Gateway
Replaces up to 10 individual components
Supports 3 x 90A inverters
Integrates utility, generator, and load control
Smart Load Management
4 programmable smart ports with AC coupling support
Automatically manages high-demand appliances
Ideal for peak shaving and energy optimization
Built for Performance & Safety
200A service entrance rated
Microgrid-ready with advanced MID functionality
Supports residential and commercial-grade systems
Seamless Integration & Monitoring
Real-time energy flow tracking across 8 circuits
Works with EG4’s updated monitoring software
Remote control and mobile alerts for full system visibility
Simplified Installation
Reduces hardware, breakers, and transfer switch needs
Cuts installation time and labor costs
Saves thousands on system setup
Ideal for
Whole-home backup systems
Off-grid and hybrid solar energy storage setups
Commercial energy optimization
Residential smart energy systems
(1) EG4 GridBOSS MID Unit
(1) Mounting Kit
(1) User Manual




| Spec Sheet: | Click Here |
| User Manual: | Click Here |
| System Wiring Diagrams: | Click Here |