BigBattery 48V 15.36kWh ETHOS 3X Expansion Kit – Modular Battery Add-On

Scalable 15.36kWh LiFePO₄ Expansion for ETHOS Energy Storage Systems

Expand your power with confidence using the BigBattery 48V ETHOS 3X Expansion Kit, delivering an additional 15.36kWh of premium LiFePO₄ energy storage to your existing ETHOS system. Perfect for longer outages, increased solar capacity, or greater system autonomy.

Includes three 5.12kWh stackable ETHOS modules, a rack base, and matched power and communication cables for seamless integration. Supports up to 16 modules per Control Box for easy system scaling.

Each module features Tier 1 LiFePO₄ cells, advanced BMS with automatic cell balancing, and IP65-rated enclosures with integrated fire suppression for reliable, maintenance-free performance.

Note: Expansion kit only. Control Box required (not included).

Key Features:

• Total Capacity: 15.36kWh (3 × 5.12kWh ETHOS Modules)
• System Voltage: 48V
• Battery Chemistry: LiFePO₄ (Lithium Iron Phosphate)
• Modular Design: Stackable and parallel-connectable (up to 16 modules per Control Box)
• Advanced BMS: Real-time data monitoring, thermal management, automatic cell balancing
• Fire Safety: Integrated fire suppression system
• Enclosure: IP65-rated for indoor/outdoor mounting
• Easy Integration: Rack base and matched cables included
• Long Cycle Life: 4000–8000 cycles at 80% depth of discharge

Ideal Applications:

• Residential solar energy storage
• Grid-tied and off-grid systems
• Tiny homes and cabins
• Family homes and large residences
• Emergency power backup
• Lead-acid battery replacement
• Commercial offices and mobile worksites

What’s Included:

• 3 × 48V ETHOS 5.12kWh Stackable Battery Modules – FETHS-48051-G1
• 1 × ETHOS Rack Base – CNT081
• 2 × 4.9 ft ETHOS Parallel Power Cables – CBL089
• 1 × 4.9 ft ETHOS Parallel Communication Cable – CBL096