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BigBattery ETHOS 3x Expansion Kit



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SKU: BNDL-B0012 Category: Product ID: 25406


Welcome to the forefront of energy storage innovation with the BigBattery 48V ETHOS systems. These battery modules form the backbone of adaptable power solutions suitable for a wide range of applications, including grid-tied residences, solar installations, remote off-grid locations, and commercial establishments across the country. Featuring Tier 1 LiFePO4 cells, renowned for their safety and durability, and offering scalability up to 80kWh per Control Box, the ETHOS system sets a new standard for dependable energy storage solutions.
Scalable Power: 5.12kWh modules – single stack, expandable up to 80kWh per ETHOS Control Box.
Safety First: Tier 1 LiFePO4 cells and built-in fire-extinguishing modules ensure maximum safety.
Smart Monitoring: Advanced BMS technology provides real-time monitoring of voltage, current, and temperature.
Reliable Connectivity: UL-certified connectors ensure secure and reliable power connections.
Durable Design: IP65-rated casing protects against the elements for long-lasting reliability.
Versatile Applications: Ideal for emergency backup or as part of a solar energy system.
Designed For:
48V Applications
Residential Power Systems
Home Solar Systems
UL-Certified ESS
Cabins & Tiny Homes
Family Homes & Mansions
Off-Grid Homesteads
Emergency Power
Whole Home Backup
Lead Acid Replacement
BigBattery ETHOS 3x Expansion Kit Includes: 
3 × 48V ETHOS 5.12kWh Stackable Battery Module
2 × Ethos Parallel Power Cable 4.9 ft (1500mm)
1 × ETHOS Rack Base
1 × Ethos Parallel Comm Cable 4.9 ft (1500mm)
3 Stack Specs:
 System Voltage:
 Nominal Voltage:
 kWh Capacity:
 Ah Capacity:
 Charging Voltage Range:
 55.6 – 57V
 Max Charge Voltage:
 Operating Voltage Range:
 48 – 57V
 Suggested Low Voltage Cutoff:
 48 – 50.8V
 BMS Cutoff Range:
 42 – 47V
 Cell Configuration:
 16S 3P
 Max Continuous Discharge Current:
 Max Continuous Power:
 Max Discharge Peak Current:
 300A (Max 5 seconds)
 Max Charge Current:
 Charge Temperature Range:
 32°F – 113°F (0°C – 45°C)
 Discharge Temperature Range:
 -4°F – 140°F (-20°C – 60°C)
 Optimal Discharge Temperature Range:
 59°F – 95°F (15°C – 35°C)
 Storage Temperature Range (SoC >50%):
 -4°F – 113°F (-20°C – 45°C) (Max 6 months)
 6.7 in (170 mm)
 26.5 in (674 mm)
 59.8 in (1520 mm)
 Max Connections:
 Up to (16) parallel connections per control box
 Protection Rating:
 CANBus / RS485


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