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BigBattery ETHOS 48V LiFePO4 Batteries (20.48kWh-30.72kWh) + EG4 12000XP 12,000W 48V Split Phase Off-Grid Inverter
by BigBattery

BigBattery ETHOS 48V LiFePO4 Batteries (20.48kWh-30.72kWh) + EG4 12000XP 12,000W 48V Split Phase Off-Grid Inverter

SKU: K0710
Save $2,675.00 Save $2,037.50
$10,187.50
$10,187.50 - $13,375.00
$10,187.50
$8,150.00
$8,150.00 - $10,700.00
$8,150.00
Availability:
in stock, ready to be shipped
Availability:
in stock, ready to be shipped
Bundle Options: 4 x Battery Modules (20.48 kWh) + EG4 12000XP Inverter

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BigBattery ETHOS 48V LiFePO4 Batteries (20.48kWh-30.72kWh) + EG4 12000XP 12,000W 48V Split Phase Off-Grid Inverter

BigBattery ETHOS 48V LiFePO4 Batteries (20.48kWh-30.72kWh) + EG4 12000XP 12,000W 48V Split Phase Off-Grid Inverter

BigBattery’s 48V ETHOS systems are here, and this 20.48kWh-30.72kWh 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.

Specifications:

BigBattery ETHOS 48V 5.12kWh Stackable LiFePO4 Battery Module
System Voltage 48V
Nominal Voltage 51.2V
Chemistry LiFePO4
kWh Capacity 5.12kWh
Ah Capacity 100Ah
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
Max Continuous Discharge Current 100A
Max Continuous Power 5120W
Max Discharge Peak Current 150A (Max 5 seconds)
Max Charge Current 100A
Charge Temperature Range 32°F - 113°F
Discharge Temperature Range -4°F - 140°F
Optimal Discharge Temperature Range 59°F - 95°F
Storage Temperature Range (SoC >50%) -4°F - 113°F (Max 6 months)
Depth x Width x Height 6.7 in x 26.5 in x 16.5 in
Max Connections Up to (16) parallel connections
per control box
Protection Rating IP65
Communications CANBus / RS485
Certifications UL9540a, UL1973, & UN38.3
EG4 12000XP 12,000W 48V Split Phase Off-Grid Inverter
AC INPUT
Nominal AC Voltage 120/240VAC | 120/208VAC
(L1/L2/N required)
Frequency (Grid | Generator) 60 Hz (Default) | 50 Hz (Configurable)
Max. Continuous AC Current
(Grid | Generator)		 100A @ 240VAC | 62.5A @ 240VAC
Max. AC Input Power 24000W
AC Bypass (Grid | Generator) 100A | 90A
Recommended Generator Capacity 6000W – 15000W
AC OUTPUT
Output Voltage 120/240VAC | 208VAC
Output Frequency 60 Hz (Default) | 50 Hz (Configurable)
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)
Power Factor 0.99
Total Harmonic Distortion <3%
Switching Time <10 ms (Single) | <20 ms (Parallel)
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 100VDC
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) <70W
BATTERY
Nominal Voltage 48VDC
Battery Voltage Range 46.4 – 60VDC
Max. Charge / Discharge Current 250A
Max. Charge / Discharge Power 12000W
DC Cut-Off Voltage 59VDC
Recommended Battery
Capacity per Inverter		 >400Ah
OPERATING ENVIRONMENT
Max. Parallel Connections 6
Protection Rating IP20
Communication Interface RS485 / CANBus / WiFi
Operating Temperature (Full Load) 32ºF – 113ºF
Storage Temperature 5ºF – 140ºF
Altitude <6,561 ft (2000 m)
Relative Humidity (Non-Condensing) 5 – 95%
Typical Noise Emission <60 dB
Cooling Method Fan
DIMENSIONS
Weight 104.7 lbs
Depth 5.9 in
Width 20.9 in
Height 34.25 in
BigBattery ETHOS Control Box
Operating Voltage Range 30 - 60V
Max Continuous Discharge Current 200A
Max Charge Current 200A
Charge Temperature Range -4°F - 122°F
Discharge Temperature Range -4°F - 122°F
Optimal Discharge Temperature Range -4°F - 122°F
Weight 22 lbs
Depth x Width x Height 6.7 in x 26.5 in x 8.3 in
Max Connections Up to (16) parallel connections
per control box
Communications CANBus / RS485

PACKAGE INCLUDES

BigBattery ETHOS 48V 20.48kWh Stackable Battery Module + EG4 12000XP Off-Grid Inverter

BigBattery ETHOS 48V 5.12kWh LiFePO4 Stackable Battery Module

x 4

BigBattery ETHOS Control Box

x 1

EG4 12000XP 12,000W 48V Split Phase Off-Grid Inverter

x 1

ETHOS Rack Base

x 1

Ethos Parallel Comm Cable 4.9 ft (150cm)

x 1

Ethos Parallel Power Cable 4.9 ft (1500mm)

x 2

Product Documents:

BigBattery ETHOS Control Box User Manual

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BigBattery ETHOS Control Box Specification Sheet

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EG4 12000XP 12,000W 48V Split Phase Off-Grid Inverter User Manual

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EG4 12000XP 12,000W 48V Split Phase Off-Grid Inverter Specification Sheet

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OTP graphic
OTP graphic