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Big Battery 30.7kWh ETHOS Energy Storage System with 2x EG4 18kPV Inverters

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Big Battery 30.7kWh ETHOS Energy Storage System with 2x EG4 18kPV Inverters

Name: Big Battery 30.7kWh ETHOS Energy Storage System with 2x EG4 18kPV Inverters
SKU: K0959
Price: 18300.00 USD
Availability: InStock

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Item Code: K0959

Ship Weight: 800 lbs.

Regular Price: $20,999.00

Cyber Sale: $18,300.00

You Save 13% ($2,699.00)

Product Details

The Big Battery 30.7kWh ETHOS Energy Storage System with 2x EG4 18kPV Inverters was built to be a versatile home 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 2 cutting-edge EG4 18kPV Hybrid Inverters for the highest performance features.

Revolutionizing Residential Backup Power:

•	BigBattery�s 48V ETHOS systems are here, and this 30.7kWh indoor configuration is the ideal solution for grid-tied power in your tiny home, cabin, or family home, supported by comprehensive safety, reliability, and state-of-the-art features.
•	Features an IP65 Casing, designed for indoor or outdoor installation and operation!

Expandability:

•	You can connect both inverters & 18 Battery Modules for a scalable system up to 92.1 kWh!
•	Each ETHOS battery stores 5.12 kWh of tier 1 LFP, the safest battery storage on the market!
•	The battery pack additions are modular, installer friendly and come with all cables and components needed for connection. Click Here to view and expand!

12,000W EG4 12K Hybrid Pure Sine Wave Inverter:

•	The ETHOS is paired with 2x cutting-edge EG4 12K Hybrid Inverters, delivers 12,000W of power with up to 18,000W PV input (each), ideal for large home or off-grid energy systems. Featuring 3 MPPT inputs, built-in breakers, and a fast 15-30ms UPS switch, it ensures seamless, efficient operation.
•	Its transformer-free design keeps it lightweight and energy-efficient while supporting smart load control, AC coupling, and peak shaving to cut energy costs and protect against grid outages. An intuitive LCD touchscreen and remote monitoring make setup and management simple.

12-Year Warranty Built-in Upgrade:

•	Buy with confidence knowing that your investment will last for the long-haul.

Safety is Our Top Priority:

•	The ETHOS use ultra-safe LFP cells that have "Quad-Safety Redundancy" built into every pack. These packs include a built-in BMS, Thermal Management System, Automatic Thermal Protection and 300A Industrial Fuse making them the safest batteries you could possibly use in your setup.
•	Features UL9540, UL9540A, UL1973, & UN38.3 listings for safety and reliability Nationwide! They can easily be installed in every home in America!
•	These systems are certified to the highest possible level! Allowing for Tax Incentives, Net Metering and Peak Shaving! Compatible with just about any Grid-tied inverter!

Certificates:

•	See below the top of the line performance and Certifications affiliated with this system.

Package Includes:

•	(6) 48V ETHOS 5.12kWh Stackable Battery Module (2) ETHOS Control Box (2) EG4 18kPV Hybrid Inverter (2) 15kWh Ethos Controller to Battery Power Cable 4ft (1220mm) (1) Parallel Busbar

Specifications

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

What's Included:

• (6) 48V ETHOS 5.12kWh Stackable Battery Module
• (2) ETHOS Control Box
• (2) EG4 18kPV Hybrid Inverter
• (2) 15kWh Ethos Controller to Battery Power Cable 4ft (1220mm)
• (1) Parallel Busbar

Video

Big Battery 30.7kWh ETHOS Energy Storage System with 2x EG4 18kPV Inverters

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