BigBattery | 48V ETHOS 5.12kWh Stackable Battery Module

Welcome to the forefront of energy storage innovation with the BigBattery 48V ETHOS systems. These 5.12kWh 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, 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.

SKU: FETHS-48051-G1

System Voltage: 48V
Nominal Voltage: 51.2V
Chemistry: LiFePO4
kWh Capacity: 5.12kWh
Ah Capacity: 100Ah
Charging Voltage Range: 55.6 - 57V
Max Charge Voltage: 57V
Operating Voltage Range: 48 – 57V
Suggested Low Voltage Cutoff: 48 – 50.8V
Cell Configuration: 16S
Max Continuous Discharge Current: 100A
Max Continuous Power: 5120W
Max Discharge Peak Current: 150A (Max 5 seconds)
Max Charge Current: 100A
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)
Depth: 6.7 in (170 mm)
Width: 26.5 in (674 mm)
Height: 16.5 in (419 mm)
Max Connections: Up to (16) parallel connections per control box
Protection Rating: IP65
Communications: CANBus / RS485
Certifications: UL9540a, UL1973, & UN38.3

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
• Intense Heat & Cold

Spec Sheet: Download

Manual: Download