BigBattery ETHOS + EG4 12000XP V2 Off-Grid System

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

A flexible, high-performance energy storage system built for reliability, scalability, and long-term energy independence.

Kit includes - Quantity depends on Your ESS Configuration