BigBattery ETHOS 12kW 30.7kWh Off-Grid Power System

BigBattery ETHOS 12kW 30.7kWh Off-Grid Power System

The BigBattery ETHOS 48V 30.7kWh Power System is the ultimate off-grid energy storage solution for high-demand applications. Whether you're powering a full off-grid home, homestead, farm, or workshop, this powerhouse delivers long-lasting, reliable performance with next-generation safety, monitoring, and solar integration features.

This system includes six 48V 5.12kWh LiFePO4 battery modules (totaling 30.72kWh of storage) and the advanced EG4 12kW split-phase inverter with dual MPPT inputs and 24kW PV capacity. Its modular, stackable design and included mounting hardware ensure a clean, professional installation that’s scalable and ready for expansion.

Key Features:

• Battery Capacity: 30.72kWh (Modular and stackable for future expansion)
• System Voltage: 48V – Ideal for large off-grid and backup systems
• Chemistry: Lithium Iron Phosphate (LiFePO4)
• Inverter: EG4 12kW split-phase inverter with UPS & dual MPPT (24kW PV input)
• Monitoring: Inverter LCD touchscreen + LED status display on control box
• Smart Communication: CANBus & RS485 protocols
• Safety Features: IP65-rated housing, internal fire suppression, auto cell balancing
• Installation: Includes rack base and mounting hardware for secure setup

Designed For 48V Applications 

• Residential power systems 
• Home solar systems 
• Cabins & tiny homes 
• Family homes & mansions 
• Off-grid homesteads 
• Emergency power 
• Whole home backup 
• Lead acid replacement

Benefits:

• Reliable lithium battery technology with extended cycle life
  
• Supports peak shaving and time-of-use optimization
  
• Easily scalable for larger storage needs
  
• Compatible with various solar PV setups and inverters
  
• Designed for continuous, off-grid energy supply
  
• 30% Federal Tax Credit Available
  

What’s Included:

• 6 × 48V ETHOS 5.12kWh Stackable Battery Modules – Model: FETHS-48051-G1
  
• 1 × ETHOS Control Box – Model: CNT060
  
• 1 × ETHOS  zack Base – Model: CNT081
  
• 2 × Parallel Power Cables (4.9 ft / 1500mm) – Model: CBL089
  
• 1 × Parallel Communication Cable (4.9 ft / 150cm) – Model: CBL096
  
• 1 × EG4 12kW Off-Grid Inverter (24kW PV Input) – Model: INV030
  
  

Specifications

Product Specifications

Shopping Guide

Why Shop With Us

Why Shop With Ecogrid Supply?

• Authorized & Trusted Dealer: We’re fully authorized for every brand we carry, so you get genuine products with full manufacturer warranties.

• Fast, Reliable Shipping: All items ship from our U.S. warehouses with quick and dependable freight options to keep your project on track.

• 30-Day Hassle-Free Returns: Change your mind? No worries — 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 real people who know off-grid power systems.

• Expert Energy Guidance: Our solar and backup energy specialists are ready to help you with design, planning, product questions, and installation tips.

• USA-Based Service: Our team proudly operates here in the United States, providing local, knowledgeable, and friendly support.

• Secure Payments: Shop confidently with our encrypted, secure checkout to protect your personal and payment information.

• Built for Energy Independence: Whether you’re powering a cabin, prepping for emergencies, or going off-grid, our products are selected for performance, reliability, and sustainable operation.