12-Year Warranty

12-Year Warranty

Full Battery Coverage

BigBattery ETHOS Battery & 12000XP V2 Inverter | 10.24– 92.16kWh | Off- Grid System
BigBattery ETHOS Battery & 12000XP V2 Inverter | 10.24– 92.16kWh | Off- Grid System - Image 2
BigBattery ETHOS Battery & 12000XP V2 Inverter | 10.24– 92.16kWh | Off- Grid System - Image 3
BigBattery ETHOS Battery & 12000XP V2 Inverter | 10.24– 92.16kWh | Off- Grid System - Image 4
BigBattery ETHOS Battery & 12000XP V2 Inverter | 10.24– 92.16kWh | Off- Grid System - Image 5

Everything You Need, Included

Everything in the box

ETHOS Control Box1× ETHOS Control Box
BigBattery ETHOS2× BigBattery ETHOS
10kWh Ethos Controller to Battery Power Cable 31.5 \\\" inch (800mm)1× 10kWh Ethos Controller to Battery Power Cable 31.5 \\\" inch (800mm)
EG4 12000XP (24kPV) OFF-GRID INVERTER1× EG4 12000XP (24kPV) OFF-GRID INVERTER
  • 12-Year Warranty
  • U.S. Support
  • LiFePO₄ Safety

BigBattery ETHOS Battery & 12000XP V2 Inverter | 10.24– 92.16kWh | Off- Grid System

SKU# K0183

Change inverter or battery

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Choose Your ESS Configuration*

Compare the available system sizes and choose the configuration that fits your power needs.

1x Inverter

Standard

Great for small homes or basic backup needs.

Residential

2x Inverter

Large

Ideal for larger homes or higher energy demands.

Extended Power

3x Inverter

3 Phase

For commercial, agricultural or high-load applications.

Maximum Capacity
SKU: K0710-V Categories: ,
30% Federal Tax Credit AvailableThis system qualifies for federal rebates.
Learn More Here
$4,679.99

Additional Add-ons

-

Documents & Certifications

Battery

Inverter

About this item

The BigBattery ETHOS™ + EG4 12000XP ESS System is a powerful, scalable energy solution designed for both on-grid and off-grid applications. Combining the modular ETHOS 48V LiFePO₄ battery system with the high-performance EG4 12000XP hybrid inverter, this system delivers reliable, efficient energy for homes, cabins, and homesteads.

 

The EG4 12000XP provides up to 12,000W split-phase output with up to 24,000W PV input and dual MPPTs, enabling strong solar production and seamless power management between solar, battery, and grid. Paired with the ETHOS battery system – expandable up to 80+ kWh – this setup ensures long-lasting, maintenance-free energy storage with consistent performance.

 

Built with advanced battery management, and U.S.-engineered design, this system delivers safe, intelligent energy control with closed-loop communication and real-time monitoring. Ideal for backup power, energy savings, and full off-grid independence.

Ships From: Texas, USA
Warranty: 12 Years (Battery), 5 Years (Inverter)
Support: Lifetime USA-Based Tech Support

 

Compatibility

Integrated & Optimized System:

  • ETHOS Battery System + EG4 12000XP Hybrid Inverter

Expandable & Flexible:

  • Scalable ETHOS battery capacity up to 80+ kWh
  • Compatible with additional ETHOS modules for future expansion
  • Supports grid-tied, hybrid, and off-grid installations
Key Features
  • Complete ESS SolutionBattery + inverter system designed to work seamlessly together
  • 12,000W Split-Phase OutputReliable power for residential and off-grid applications
  • 24,000W PV InputHigh solar capacity with dual MPPT optimization
  • LiFePO₄ Battery ChemistrySafe, stable lithium technology with long lifespan
  • 6,000+ Cycle LifeBuilt for years of daily use and long-term savings
  • Closed-Loop CommunicationOptimized coordination between battery and inverter
  • Advanced BMS ProtectionMulti-layer protection for safe and reliable operation
  • Modular ExpansionEasily scale storage capacity as energy needs grow
  • UPS Backup (15-30ms)Seamless transition during outages
  • Smart Energy ManagementSupports load control, AC coupling, and peak shaving
  • Remote Monitoring & ControlReal-time system tracking and performance insights
  • Maintenance-Free OperationNo routine servicing required

A flexible, high-performance energy storage system built for reliability, scalability, and long-term energy independence.

 
 

Real Installations From Customers Like You!

Enter your build here to show off your build and receive a gift-box from us! Selected photos will be featured on our website and product pages.

Newcomerstown, OH
St. Joseph, MI
Riverside, CA
Denver, CO
Mojave, AZ
San Antonio, TX
ETHOS- Lithium battery storage
ETHOS- solar batteries
ETHOS- Lithium ion battery
ETHOS- solar battery

Battery Downloads

SKU#:CNT060
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
CEC Listing – BigBattery ETHOS:Go to linkGO TO LINK

Battery Specifications

Operating Voltage Range:30 – 60V
Max Continuous Discharge Current:200A
Max Charge Current:200A
Charge Temperature Range:-4°F – 122°F (-20°C – 50°C)
Discharge Temperature Range:-4°F – 122°F (-20°C – 50°C)
Optimal Discharge Temperature Range:-4°F – 122°F (-20°C – 50°C)
Weight:22 lb (10 kg)
Depth:6.7 in (170 mm)
Width:26.5 in (674 mm)
Height:8.3 in (211 mm)
Max Connections:Up to (16) parallel connections per control box
Communications:CANBus / RS485

Inverter Downloads

SKU: INV030
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
UL1741 Certificate:DownloadDOWNLOAD
WiFi Configuration Guide:DownloadDOWNLOAD
CEC Listing – EG4 12000XP:Go to linkGO TO LINK

Inverter Specifications

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
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)
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)
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
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
Max Parallel Connections:6
Protection Rating:IP20
Communication Interface:RS485 / CANBus / WiFi
Operating Temperature (Full Load):32ºF – 113ºF (0ºC – 45ºC)
Storage Temperature:5ºF – 140ºF (-15ºC – 60ºC)
Altitude:<6,561 ft (2000 m)
Relative Humidity:5 – 95% (Non-Condensing)
Typical Noise Emission:<60 dB
Cooling Method:Fan
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)

BigBattery batteries are backed by a 12-year warranty, giving you reliable long-term performance and confidence in every charge. Designed for durability and engineered to last, our batteries are built to power your setup for over a decade. For more information, please visit our policy page

 
 

Real Installations From Customers Like You!

Enter your build here to show off your build and receive a gift-box from us! Selected photos will be featured on our website and product pages.

Newcomerstown, OH
St. Joseph, MI
Riverside, CA
Denver, CO
Mojave, AZ
San Antonio, TX
ETHOS- Lithium battery storage
ETHOS- solar batteries
ETHOS- Lithium ion battery
ETHOS- solar battery

.

 

 

Battery Downloads

SKU#:CNT060
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
CEC Listing – BigBattery ETHOS:Go to linkGO TO LINK

Battery Specifications

Operating Voltage Range:30 – 60V
Max Continuous Discharge Current:200A
Max Charge Current:200A
Charge Temperature Range:-4°F – 122°F (-20°C – 50°C)
Discharge Temperature Range:-4°F – 122°F (-20°C – 50°C)
Optimal Discharge Temperature Range:-4°F – 122°F (-20°C – 50°C)
Weight:22 lb (10 kg)
Depth:6.7 in (170 mm)
Width:26.5 in (674 mm)
Height:8.3 in (211 mm)
Max Connections:Up to (16) parallel connections per control box
Communications:CANBus / RS485

Inverter Downloads

SKU: INV030
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
UL1741 Certificate:DownloadDOWNLOAD
WiFi Configuration Guide:DownloadDOWNLOAD
CEC Listing – EG4 12000XP:Go to linkGO TO LINK

Inverter Specifications

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
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)
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)
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
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
Max Parallel Connections:6
Protection Rating:IP20
Communication Interface:RS485 / CANBus / WiFi
Operating Temperature (Full Load):32ºF – 113ºF (0ºC – 45ºC)
Storage Temperature:5ºF – 140ºF (-15ºC – 60ºC)
Altitude:<6,561 ft (2000 m)
Relative Humidity:5 – 95% (Non-Condensing)
Typical Noise Emission:<60 dB
Cooling Method:Fan
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)

BigBattery batteries are backed by a 12-year warranty, giving you reliable long-term performance and confidence in every charge. Designed for durability and engineered to last, our batteries are built to power your setup for over a decade. For more information, please visit our policy page

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BigBattery ETHOS Battery & 12000XP V2 Inverter | 10.24– 92.16kWh | Off- Grid System

Price range: $4,679.99 through $29,474.97