Product Summary:

The BigBattery ETHOS™ + EG4 12000XP ESS System is a powerful, scalable energy solution designed for both on-grid and off-grid applications. Combining the modular ETHOS 48V LiFePO₄ battery system with the high-performance EG4 12000XP hybrid inverter, this system delivers reliable, efficient energy for homes, cabins, and homesteads.

The EG4 12000XP provides up to 12,000W split-phase output with up to 24,000W PV input and dual MPPTs, enabling strong solar production and seamless power management between solar, battery, and grid. Paired with the ETHOS battery system – expandable up to 80+ kWh – this setup ensures long-lasting, maintenance-free energy storage with consistent performance.

Built with advanced battery management, and U.S.-engineered design, this system delivers safe, intelligent energy control with closed-loop communication and real-time monitoring. Ideal for backup power, energy savings, and full off-grid independence.

Ships From: Texas, USA
Warranty: 12 Years (Battery), 5 Years (Inverter)
Support: Lifetime USA-Based Tech Support

Compatibility

Integrated & Optimized System:

ETHOS Battery System + EG4 12000XP Hybrid Inverter

Expandable & Flexible:

Scalable ETHOS battery capacity up to 80+ kWh
Compatible with additional ETHOS modules for future expansion
Supports grid-tied, hybrid, and off-grid installations

Key Features

Complete ESS Solution – Battery + inverter system designed to work seamlessly together
12,000W Split-Phase Output – Reliable power for residential and off-grid applications
24,000W PV Input – High solar capacity with dual MPPT optimization
LiFePO₄ Battery Chemistry – Safe, stable lithium technology with long lifespan
6,000+ Cycle Life – Built for years of daily use and long-term savings
Closed-Loop Communication – Optimized coordination between battery and inverter
Advanced BMS Protection – Multi-layer protection for safe and reliable operation
Modular Expansion – Easily scale storage capacity as energy needs grow
UPS Backup (15-30ms) – Seamless transition during outages
Smart Energy Management – Supports load control, AC coupling, and peak shaving
Remote Monitoring & Control – Real-time system tracking and performance insights
Maintenance-Free Operation – No routine servicing required