Big Battery | 36kW 46kWh ETHOS Energy Storage System (ESS)
Overview
CERTIFIED COMMERCIAL ESS! BigBattery’s 48V ETHOS system offers a powerful 46.08kWh configuration, designed specifically for commercial applications—ideal for grid-tied power in office buildings, warehouses, and job sites. Backed by comprehensive safety features, unmatched reliability, and advanced capabilities, ETHOS is built to meet the energy needs of modern businesses.
The ETHOS system provides a modular, stackable design for scalable expansion, along with an IP65-rated casing, internal fire suppression, and an advanced BMS with automatic cell balancing to ensure safe and reliable long-term use. Installation is made simple with included wall-mount hardware, and its control box with interactive LED display, plus CANBus and RS485 communication protocols, allows for easy monitoring of power status and performance.
In addition, ETHOS pairs with three state-of-the-art 12,000W Lux inverters, each equipped with an LCD touchscreen, 3 MPPT inputs, integrated UPS functionality, and support for PV arrays up to 54,000W. Features such as smart load control, AC coupling, and peak shaving help to ensure stable power during grid disruptions and reduce monthly energy costs.
Whether you need a dependable backup power source or a high-performance solar solution, ETHOS delivers consistent, efficient power for daily use while enabling utility savings, net metering benefits, and tax incentives. Take control of your business’s energy needs with the 48V ETHOS system today!
What's Included
9 × 48V ETHOS 5.12kWh Stackable Battery Module
3 × ETHOS Control Box
3 × LUXPower 12kW Hybrid Inverter
3 × 15kWh Ethos Controller to Battery Power Cable 4ft (1220mm)
1 × Parallel Busbar
Specs and Downloads
System Spec Sheet
Inverter Spec Sheet
Single Stack Tech Specs
| SKU: | K0966 |
| GTIN-12 (U.P.C.): | 850061252050 |
| 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: | 250A |
| Max Continuous Power: | 12800W |
| 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 / NEMA 4X |
| Communications: | CANBus / RS485 |
| Certifications: | UL9540, UL9540A, UL1973, & UN38.3 |
Inverter
Registration & WiFi Setup Guide
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We do not sell any used or refurbished items.
Frequently Asked Questions
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