BigBattery ETHOS 15.4KWH (3 Module) 48V Stackable Power Storage System
Overview
The 48V ETHOS stackable power storage system delivers reliable, modular energy for residential solar, off‑grid cabins, tiny homes, and whole‑home backup. With its own control box, an in‑depth LED interface, and a dedicated mounting system, ETHOS scales from two to three modules (10.24 kWh to 15.36 kWh) and expands to meet evolving power needs. Its LiFePO4 chemistry ensures long cycle life, while CANBus/RS485 communication keeps you connected to system health and status in real time. The unit is designed to support grid‑tie with favorable net‑metering outcomes and tax incentives, and is suitable for 48V home solar architectures, emergency power, and lead acid replacements in demanding environments.
Performance & Specifications
- System Voltage: 48V
- Nominal voltage: 51.2V
- Chemistry: LiFePO4
- kWh capacity: 15.36kWh
- Ah capacity: 300Ah
- Charging voltage range: 55.6–57V
- Max charge current: 200A
- Max continuous discharge current: 200A
- Max continuous power: 10,240W
- Discharge peak current: 300A (up to 5 seconds)
- Discharge voltage range: 48–57V
- BMS cutoff range: 42–47V
- Cell configuration: 16S3P
- Charge temperature: 32°F–113°F (0°C–45°C)
- Discharge temperature: -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) up to 6 months
- Weight: 387 lb (175.5 kg)
- Dimensions: Depth 6.7 in (170 mm); Width 26.5 in (674 mm); Height 59.8 in (1520 mm)
- Max connections: Up to 16 parallel connections per control box
- Protection: IP65
- Communications: CANBus / RS485
- Certifications: UL9540, UL9540a, UL1973, UN38.3, CE
Safety Features & Certifications
The ETHOS platform incorporates an intelligent BMS with auto‑cell balancing, robust over‑current and temperature protections, and an IP65 enclosure for dust and water resistance. Certifications support grid‑tie capability and compliance with major safety and performance standards, enabling safe operation in residential and off‑grid installations. Monitoring is facilitated via the LED display and CANBus/RS485 interfaces, ensuring visibility into state of charge, health, and fault alerts.
Installation & Maintenance
Installation centers on the stackable design with its own control box, mounting system, and interconnect cabling. The kit includes one ETHOS control box, three 51.2V100Ah modules, a 15kWh Ethos controller to battery power cable, and relevant manuals. Position the assembly in a ventilated, dry indoor or protected outdoor location, observe ambient operating ranges, and maintain clearance for cooling. Routine inspections should verify secure mounting, intact connections, and LED indicators; follow the included manual for specific commissioning and safety procedures.
BigBattery ETHOS 15.4KWH (3 Module)
STACKABLE POWER STORAGE! BigBattery’s 48V ETHOS is here to revolutionize your home’s power. Our all new ETHOS battery system features a fully stackable and modular design, equipped with its own control box, in-depth LED display, and mounting system.
Whether you’re looking to ensure emergency backup power is available in your cabin or tiny home, or you’re looking to outfit your residential home with a powerful solar system, the ETHOS ensures reliable, efficient power delivery through every season. Equipped with an intelligent BMS featuring an auto-cell balancing function, as well as an IP65-rated casing, the ETHOS ensures long-lasting safety and durability. Plus, with its interactive LED display and CANBus/RS485 communication protocols, you’re always able to monitor the health and status of your power. The ETHOS is certified to the highest level, including UN9540, UL1973, and CE certifications, affording the ability to grid-tie your power system and capitalize on net-metering programs and other tax incentives.
The ETHOS is now available in 2-stack (10.24 kWh) and 3-stack (15.36 kWh) configurations, with the ability to expand upon your ETHOS system as needed. It’s time to take your home’s power to the next level! Shop the all-new 48V ETHOS today!
Designed For 48V Applications
Product Specifications
BigBattery ETHOS 15.4KWH (3 Module) Product Specifications
| System Voltage: | 48V |
| Nominal Voltage: | 51.2V |
| Chemistry: | LiFePO4 |
| kWh Capacity: | 15.36kWh |
| Ah Capacity: | 300Ah |
| Charging Voltage Range: | 55.6 - 57V |
| Max Charge Voltage: | 57V |
| 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: | 200A |
| Max Continuous Power: | 10240W |
| Max Discharge Peak Current: | 300A (Max 5 seconds) |
| Max Charge Current: | 200A |
| 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) |
| Weight: | 387 lb (175.5 kg) |
| Depth: | 6.7 in (170 mm) |
| Width: | 26.5 in (674 mm) |
| Height: | 59.8 in (1520 mm) |
| Max Connections: | Up to (16) parallel connections per control box |
| Protection Rating: | IP65 |
| Communications: | CANBus / RS485 |
| Certifications: | UL9540, UL9540a, UL1973, UN38.3, & CE |
Kit Included
- 1 × ETHOS Control Box
- 3 × 51.2V100Ah, ETHOS 5.12Kwh, Stackable Type
- 1 × 15kWh Ethos Controller to Battery Power Cable 4ft (1220mm)
| System Voltage: | 48V |
| Nominal Voltage: | 51.2V |
| Chemistry: | LiFePO4 |
| kWh Capacity: | 15.36kWh |
| Ah Capacity: | 300Ah |
| Charging Voltage Range: | 55.6 - 57V |
| Max Charge Voltage: | 57V |
| 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: | 200A |
| Max Continuous Power: | 10240W |
| Max Discharge Peak Current: | 300A (Max 5 seconds) |
| Max Charge Current: | 200A |
| 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) |
| Weight: | 387 lb (175.5 kg) |
| Depth: | 6.7 in (170 mm) |
| Width: | 26.5 in (674 mm) |
| Height: | 59.8 in (1520 mm) |
| Max Connections: | Up to (16) parallel connections per control box |
| Protection Rating: | IP65 |
| Communications: | CANBus / RS485 |
| Certifications: | UL9540, UL9540a, UL1973, UN38.3, & CE |
| Spec Sheet Download: | Click Here |
| Safety Data Sheet Download: | Click Here |