12 Year Warranty from BigBattery
BigBattery
BigBattery|12kW 30.7kWh ETHOS Off-Grid Power System
BigBattery|12kW 30.7kWh ETHOS Off-Grid Power System
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BigBattery’s 48V ETHOS systems are here, and this 20.48kWh configuration is the ideal solution for off-grid power in your tiny home, cabin, or homestead, supported by comprehensive safety, reliability, and state-of-the-art features.
The ETHOS System was built to be a versatile off-grid 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, an internal fire suppression system, 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 the cutting-edge 12000XP split-phase, off-grid inverter from EG4, which features its own LCD touch screen display, 2 MPPT inputs, an integrated UPS module for seamless on and off-grid switching, and the ability to handle PV arrays of up to 24000W, with a rated power of 12000W. 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 through peak shaving and time-of-use offsetting.
Whether you’re looking to ensure emergency backup power is always available, or you’re looking to outfit your home with an uninterrupted power system to last all season, or all year long, the ETHOS ensures reliable, efficient power delivery day in and day out, allowing you to save on utilities, and most importantly, stay powered and prepared. Take control of your power and shop the 48V ETHOS today.
Kit Includes:
Designed For 48V Applications
Tech Specs
Single Module Tech Specs
| 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 |
| Cell Configuration: |
16S 2P |
| 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: | 43.3 in (1100 mm) |
| Max Connections: | Up to (16) parallel connections per control box |
| Protection Rating: | IP65 / NEMA 4X |
| Communications: | CANBus / RS485 |
| Certifications: | UL9540a, UL1973, & UN38.3 |
Inverter Specs
AC Input
| AC Voltage: | 120V AC / 240V AC |
| AC Frequency: | 50 Hz / 60 Hz |
| Max. Continuous AC Current: |
37.5A @ 240V |
| Max. AC Input Power: | 9000W |
| Max. AC Bypass: | 50A |
AC OUTPUT
| Output Voltage: |
120V AC / 240V AC |
| Output Frequency: |
50 Hz / 60 Hz |
| Max. Continuous Output Current: |
25A @ 240V |
| Output Power: | 6000W |
| Surge Capacity: |
12000W (3.5 sec) / 11000W (5 sec) |
| Power Factor: | 0.99 (Full Load) |
| Reactive Power Adjustment Range: | -0.8 ~ 0.8 Leading Adjustable |
| Total Harmonic Distortion: | <3% |
| Switching Time: | <15 ms (Single) / <30 ms (Parallel) |
PV INPUT
| No. of MPPTs: | 2 (1) |
| Max. Input Current: |
17A / 17A |
| Max. Short Circuit Input Current: |
25A / 25A |
| DC Input Voltage Range: |
100 - 480V DC |
| Start Up Voltage: |
100V DC ± 10V DC |
| MPPT Operating Voltage Range: | 120 - 385V DC |
| MPPT Voltage: | 320V DC |
| Max. PV Array Power: | 8000W (4000W per MPPT) |
| Max. Efficiency: | 99% |
BATTERY
| Nominal Voltage: | 48V DC |
| Voltage Range: |
46.4 - 60V DC |
| Max. Discharge Current: |
140A |
| Max. Charge Current: |
125A |
| DC Cut-Off Voltage: | 59V DC |
| DC Recovery Voltage: | 57.4V DC |
| Charge Cut-Off Voltage: | 58.4V DC |
OPERATING ENVIRONMENT
| Operating Temperature Range: | 32ºF - 113ºF (0ºC - 45ºC) |
| Storage Temperature Range: | 5ºF - 140ºF (-15ºC - 60ºC) |
| Altitude: | <6,561 ft (2000 m) |
| Relative Humidity: |
5 - 95% |
| Typical Noise Emission: |
<58 dB |
| Protection Rating: |
IP20 |
| Max. Parallel Connections: | 16 |
DIMENSIONS
| Weight: | 52.9 lbs (24 kg) |
| Depth: |
5.25 in (132 mm) |
| Width: |
18 in (457 mm) |
| Height: | 25.5 in (648 mm) |
Inverter Downloads
| Warranty: | Warranty |
| Spec Sheet: | Spec Sheet |
| User Manual: | User Manual |
| Monitoring System Guide: | Monitoring System Guide |
| UL1741 Certificate: | UL1741 Certificate |
| Monitoring Adapter Installation Guide: | Monitoring Adapter Installation Guide |
