BigBattery ETHOS 48V Indoor Energy Storage System (6 Module)

The ETHOS 48V indoor energy storage system is a turnkey residential ESS designed for grid-tied homes, cabins, and estate-style properties seeking reliable backup power and efficient energy management. Built around a stackable, modular design, it ships with all hardware needed for wall mounting and features an IP65-rated enclosure for enhanced protection in diverse environments. Paired with a 12,000 W Lux inverter—and its LCD touchscreen, three MPPT inputs, integrated UPS, and PV compatibility up to 18 kW—the ETHOS delivers seamless on/off-grid switching, peak shaving, and robust solar integration while enabling homeowners to capitalize on net metering and tax incentives.

Performance specifications

• System Voltage: 48 V; Nominal Voltage: 51.2 V
• Chemistry: LiFePO4
• kWh Capacity: 15.36 kWh; Ah Capacity: 300 Ah
• Cell Configuration: 16S 3P
• Charging Voltage Range: 55.6 – 57 V; Max Charge Voltage: 57 V
• Operating Voltage Range: 48 – 57 V
• Low Voltage Cutoff: 48 – 50.8 V; BMS Cutoff Range: 42 – 47 V
• Max Continuous Discharge Current: 200 A; Max Continuous Power: 10,240 W
• Max Discharge Peak Current: 300 A (up to 5 seconds); Max Charge Current: 200 A
• Charge/Discharge Temperatures: 32°F–113°F (0°C–45°C); Discharge: -4°F–140°F (-20°C–60°C)
• Optimal Discharge Temperature: 59°F–95°F (15°C–35°C); Storage (SoC > 50%): -4°F–113°F (-20°C–45°C) for up to 6 months
• Weight/Dims: 387 lb (175.5 kg); 6.7 in (170 mm) depth; 26.5 in (674 mm) width; 59.8 in (1520 mm) height
• Max Connections: Up to 16 parallel connections per control box
• Protection: IP65; Communications: CANBus / RS485; Certifications: UL954
• Inverter pairing: 12,000 W Lux inverter with LCD display, 3 MPPT inputs, UPS module, and PV handling up to 18 kW

Safety, certifications and reliability

Safety is underpinned by an auto cell-balancing BMS and a rugged IP65 enclosure, delivering long-term reliability in fluctuating grid and environmental conditions. The system is UL954 certified, reinforcing compliance with recognized safety standards for energy storage systems. CANBus and RS485 communications enable straightforward status monitoring and integration with existing home automation and solar monitoring platforms.

Installation and expandability

The ETHOS is designed for straightforward installation with included mounting hardware for wall installation. Its modular design supports stacking and expansion, allowing additional modules to be added as power needs grow. The control box features an interactive LED display for real-time status and health checks, with easy CANBus/RS485 connectivity to the inverter and monitoring systems.

Operating environment and system integration

Designed for 48V residential applications, the ETHOS supports indoor deployment in homes, cabins, and larger estates. The integrated UPS in the Lux inverter provides seamless transitions between grid-tied and off-grid operation, while PV input capability up to 18 kW enables efficient solar charging and peak shaving to optimize monthly utility costs.

BigBattery ETHOS 30.7KWH (6 Module)

REVOLUTIONIZING RESIDENTIAL ESS! BigBattery’s 48V ETHOS systems are here, and this 30kWh indoor configuration is the ideal solution for grid-tied power in your family home, cabin, or mansion, supported by UL certifications and state-of-the-art features.

The ETHOS System was built to be a versatile home power solution, with a stackable, modular design for easy expandability, and all hardware included to mount your ETHOS to your wall with an effortless installation. The ETHOS comes equipped with an IP65-rated casing, as well as an advanced BMS with auto cell-balancing to ensure long-lasting safety and reliability. Plus, its control box features an interactive LED display, along with CANBus and RS485 communication protocols, so you can always monitor the status and performance of your power.

But that’s not all. We pair our ETHOS with a cutting-edge 12000W Lux inverter, which features its own LCD touch screen display, 3 MPPT inputs, an integrated UPS module for seamless on and off-grid switching, and the ability to handle PV arrays of up to 18000W. Plus, through its smart load control, AC coupling abilities, and peak shaving function, you can meet your power needs and protect your home against unstable grids or rolling blackouts, while seeing huge savings each month on your electric bill.

Whether you’re looking to ensure emergency backup power is always available, or you’re looking to outfit your home with a powerful solar system, the ETHOS ensures reliable, efficient power delivery day in and day out, allowing you to save on utilities, or get rewarded for giving back to the grid through net metering programs and other tax incentives. Take control of your home’s power and shop the 48V ETHOS today!

Kit Included

• 1 × ETHOS Control Box
• 6 × 51.2V100Ah, ETHOS 5.12Kwh, Stackable Type
• 1 × ETHOS RACK BASE
• 1 × Ethos Parallel Comm Cable 4.9 ft (1500mm)
• 2 × Ethos Parallel Power Cable 4.9 ft (1500mm)

Product Manual