BigBattery ETHOS 6kW 15.3kWh Off-Grid Power System

BigBattery ETHOS 6kW 15.3kWh Off-Grid Power System

The BigBattery ETHOS 48V 15.3kWh Power System is a high-capacity, off-grid energy storage solution designed for 48V residential and light commercial applications. With expanded battery capacity, modular scalability, and cutting-edge safety features, this system is perfect for powering tiny homes, off-grid cabins, homesteads, and emergency backup systems.

This configuration includes two 48V 7.68kWh LiFePO4 battery modules (totaling 15.36kWh) paired with a powerful 6000W split-phase inverter and charger. The inverter supports up to 8000W of PV input, features dual MPPTs, and includes an integrated UPS module for seamless transition between on-grid and off-grid operations.

Key Features:

• Battery Capacity: 15.36kWh (Expandable with stackable design)
  
• Voltage: 48V – Ideal for residential & small commercial applications
  
• Chemistry: Lithium Iron Phosphate (LiFePO4)
  
• Inverter: 6000W split-phase with smart load control & LCD touchscreen
  
• MPPT: Dual MPPT inputs – handles up to 8000W of solar PV
  
• Communication: CANBus & RS485 protocols for real-time monitoring
  
• Monitoring: Interactive LED display on control box
  
• Enclosure: IP65-rated with built-in fire suppression system
  
• BMS: Advanced battery management with auto cell balancing
  
• Installation: Includes wall-mount hardware for easy, secure installation
  

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:

• 3 × 48V ETHOS 5.12kWh Stackable Battery Modules – Model: FETHS-48051-G1
  
• 1 × ETHOS Control Box – Model: CNT060
  
• 1 × EG4 6kW Off-Grid Inverter (8kW PV Input) – Model: INV026
  
• 1 × 15kWh Controller-to-Battery Power Cable (4 ft / 1220mm) – Model: CBL091
  
• Wall-mount hardware and accessories
  

Specifications

Product Specifications

Why Buy From Us

Why Buy From 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.

Buying Guide