Big Battery 12kW 20.4kWh ETHOS Off-Grid Power System

ETHOS LiFePO4 Battery Specifications (Single Battery Stack = 2x 48V ETHOS 5.12kWh Batteries)
Manufacturer Name:	Big Battery
System Voltage:	48V
Nominal Voltage:	51.2V
Chemistry:	LiFePO4
kWh Capacity:	10.24kWh
Ah Capacity:	200Ah
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 2P
Max Continuous Discharge Current:	200A
Max Continuous Power:	10240W
Max Discharge Peak Current:	300A (Max 5 seconds)
Max Charge Current:	200A
Charge Temperature Range:	32F - 113F (0C - 45C)
Discharge Temp Range:	-4F - 140F (-20C - 60C)
Optimal Discharge Temperature Range:	59F - 95F (15C - 35C)
Storage Temperature Range (SoC >50%):	-4F - 113F (-20C - 45C) (Max 6 months)
Weight:	273 lb (123.8 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:	UL9540, UL9540A, UL1973, & UN38.3
EG4 12kW (24kPV) Off-Grid Inverter
AC Voltage:	120/240VAC / 120/208VAC (L1/L2/N required)
AC Frequency:	60 Hz (Default) | 50 Hz (Configurable)z
Max. Continuous AC Current (Grid / Generator):	100A @ 240VAC | 62.5A @ 240VAC
Max. AC Input Power:	24,000W
AC Bypass (Grid | Generator):	100A | 90A
Recommended Generator Capacity:	6000W - 15000W
Max. Continuous Output Current:	50A @ 240VAC | 57.7A @ 208VAC
Nominal Output Power (without PV):	12000W @ 240V | 12000W @ 208V
Nominal Output Power (with PV):	12000W @ 240V | 12000W @ 208V
Max. Continuous Wattage:	12000W (L1/L2) | 6000W (L1-N/L2-N)
Surge Capacity:	18000W (5 sec) | 15000W (10 sec)
AC Grid Output
Operating Voltage Range:	180 - 270V AC
Output Voltage:	120V AC / 240V AC
Max. Continuous Output Current:	50A
Output Frequency:	50 Hz / 60 Hz
Output Power:	12,000W
AC Back/ UPS Output
Max. Continuous Output Current:	50A
AC Bypass (Generator):	90A
Output Voltage:	120V AC / 240V AC
Output Power:	12,000
Max. Continuous Line Wattage:	8000W (per 120V)
Operating Voltage Range:	180 - 270V AC
Output Frequency:	50 Hz / 60 Hz
Max. Output Power (with PV):	14,700W (10 min) / 15,500W (5 min)
Max. Output Power (without PV):	13,500W (10 min)
Total Harmonic Distortion Voltage:	Less than 5%
Switching Time:	10 ms
PV Input
No. of MPPTs (Inputs per MPPT):	2 (2)
Max. Input Current:	35A / 35A
Max. Short Circuit Input Current:	44A / 44A
DC Input Voltage Range:	100 - 480VDC
Min. Start Up Voltage:	100V
MPPT Operating Voltage Range:	120 - 385VDC
Nominal MPPT Voltage:	320VDC
Max. Utilized PV Power:	24000W (12000W per MPPT)
Max. Recommended PV Input:	28000W (14000W per MPPT)
Max. Efficiency:	99% (MPPT) | 93.5% (PV to Loads) | 92.8% (PV to Battery) | 92.5% (AC to Battery) | 90.2% (Battery to Loads)
Idle Consumption (Standby Mode):	Less than 70%
Battery Requirements for Inverter
Nominal Voltage:	48V DC
Voltage Range:	40 - 60V DC
Max. Charge / Discharge Current:	250A
Recc. Battery Capacity per Inverter:	Roughly 200 Ah
Operating Environment
Operating / Storage Temperature Range:	32F - 113F (0C - 45C)
Altitude:	6,561 ft (2000 m)
Relative Humidity:	5 - 95%
Typical Noise Emission:	60 dB
Protection Rating:	IP20
Communications:	RS485 / CANBus / WiFi
Max. Parallel Connections:	6
Dimensions
Weight:	104.7 lbs (47.5 kg)
Depth:	5.9 in (150 mm)
Width:	20.9 in (530 mm)
Height:	34.25 in (870 mm)

Product Manual

Install Manual

Specs Cut Sheet

Certifications

What's Included:

•  (4) 48V ETHOS 5.12kWh Stackable Battery Module
•  (1) ETHOS Control Box
•  (1) ETHOS Rack Base
•  (1) EG4 12kW (24kPV) Off-Grid Inverter
•  (2) Ethos Parallel Power Cable 4.9 ft (1500mm)
•  (1) Ethos Parallel Comm Cable 4.9 ft (1500mm)