Big Battery

2x BigBattery ETHOS Battery & 18kPV Hybrid Inverter (ESS) | 10.24–46.1kWh | UL9540 | Grid-Tied Home Solar System (18kW PV)

SKU: K0954

Regular price: Price: $7,758.00
Regular price: List Price:
Sale price: Price: $7,758.00
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Quantity

Low stock: 5 left

Product Summary:

The BigBattery ETHOS™ + EG4 18kPV ESS System is a complete, high-performance energy solution designed for both on-grid and off-grid applications. Combining the scalable ETHOS 48V lithium battery system with the powerful EG4 18kPV hybrid inverter, this system delivers reliable, efficient, and intelligent energy management in one integrated package.

Expandable up to 80+ kWh, the ETHOS battery adapts to your energy needs-while the 18kPV inverter seamlessly manages power from solar, battery storage, and the grid. Ideal for home backup, energy savings, and full off-grid independence.

Designed with UL 9540 certified configurations, advanced battery management, and U.S.-engineered components, this system ensures safe, maintenance-free performance with seamless closed-loop communication between battery and inverter.

Ships From: Texas, USA
Warranty: 12 Years (Battery), 10 Years (Inverter)
Support: Lifetime USA-Based Tech Support

Compatibility

Integrated & Optimized System (UL 9540 Certified + Closed-Loop Communication):

ETHOS Battery System + EG4 18kPV Hybrid Inverter

Expandable & Flexible:

Scalable ETHOS battery capacity up to 80+ kWh
Compatible with additional ETHOS modules for future expansion

Key Features

All-in-One ESS Solution – Battery + inverter system designed to work seamlessly together
18kPV Hybrid Inverter Power – Supports solar, battery, and grid simultaneously
LiFePO4 Battery Chemistry – Safe, stable lithium technology with long lifespan
6,000+ Cycle Life – Built for years of daily use and long-term savings
Advanced BMS Protection – Full protection against voltage, current, and temperature risks
Closed-Loop Communication – Optimized performance and real-time coordination between battery and inverter
Modular Expansion – Easily increase storage capacity as your energy needs grow
Fast Installation – Streamlined setup with integrated system design
Maintenance-Free Operation – No routine servicing required

A complete, future-ready energy storage system built for independence, reliability, and long-term performance-with the safety, support, and engineering you can trust.

BigBattery batteries are backed by a 12-year warranty, giving you reliable long-term performance and confidence in every charge. Designed for durability and engineered to last, our batteries are built to power your setup for over a decade.