Big Battery 12kW 20.4kWh ETHOS Energy Storage System - EG4 18kPV Hybrid Inverter

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 18kPV Inverter (ESS)
AC Voltage:	120V AC / 240V AC
AC Frequency:	50 Hz / 60 Hz
Max. Continuous AC Current:	50A @ 240V AC
Max. AC Input Power:	12,000W
Surge Capacity (with PV):	14,700W (10 min) / 15,500W (5 min)
Surge Capacity (without PV):	13,500W (10 min)
Max. Continuous Line Wattage:	6000W
Power Factor:	0.99 (Full Load)
Reactive Power Adjustment Range:	-0.8 ~ 0.8 Leading Adjustable
Total Harmonic Distortion:	<5% (Full Load)
Transfer Time:	10 - 20 ms (Single) / 20 ms (Parallel)
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:	3
Inputs per MPPT:	2 (MPPT 1) / 1 (MPPT 2 & 3)
Max. Input Current:	25A (MPPT 1) / 15A (MPPT 2 & 3)
Max. Short Circuit Input Current:	31A (MPPT 1) / 19A (MPPT 2 & 3)
DC Input Voltage Range:	100 - 600V DC
Start Up Voltage:	100V DC
MPPT Operating Voltage Range:	140 -500V DC
MPPT Voltage:	360V DC
Max. PV Array Power:	18,000W
Max. Efficiency:	94 - 99.9%
Idle Consumption:	~70W (Normal) / ~18W (Standby Mode)
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:	-13F - 140F (-25C - 60C)
Altitude:	<6,561 ft (2000 m)
Relative Humidity:	0 - 100%
Typical Noise Emission:	68 dB @ 3 ft
Protection Rating:	IP65 / NEMA 4X
Communications:	RS485 / CANBus / WiFi
Max. Parallel Connections:	10
Dimensions
Weight:	121 lbs (55 kg)
Depth:	11.2 in (285 mm)
Width:	20.5 in (520 mm)
Height:	34.3 in (871 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) EG4 18kPV Hybrid Inverter
•  (1) ETHOS Rack Base
•  (2) Ethos Parallel Power Cable 4.9 ft (1500mm)
•  (1) Ethos Parallel Comm Cable 4.9 ft (1500mm)