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

Product Summary:

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 Solution – Battery + inverter system designed to work seamlessly together
  • 12,000W Split-Phase Output – Reliable power for residential and off-grid applications
  • 24,000W PV Input – High solar capacity with dual MPPT optimization
  • LiFePO₄ Battery Chemistry – Safe, stable lithium technology with long lifespan
  • 6,000+ Cycle Life – Built for years of daily use and long-term savings
  • Closed-Loop Communication – Optimized coordination between battery and inverter
  • Advanced BMS Protection – Multi-layer protection for safe and reliable operation
  • Modular Expansion – Easily scale storage capacity as energy needs grow
  • UPS Backup (15-30ms) – Seamless transition during outages
  • Smart Energy Management – Supports load control, AC coupling, and peak shaving
  • Remote Monitoring & Control – Real-time system tracking and performance insights
  • Maintenance-Free Operation – No routine servicing required

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

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

$5,665.00$4,975.00
YOU SAVED: $690.00
SKU# K0183

Battery Selected

2× BigBattery ETHOS

Total Capacity

10.24 kWh

Inverter Selected

1× EG4 12000XP

Input / Output

18 kW / 12 kW

Choose Your Inverter Option*

EG4 18kPV EG4 FlexBoss18 EG4 FlexBoss21 None

Choose Your Battery Option*

BigBattery ETHOS EG4 280Ah All Weather EG4 280Ah Indoor None

Choose Your Inverter Option*

APEX-6.5K APEX-10K EG4 6000XP EG4 12000XP VICTRON MP II 3000 VICTRON MP II 5000 None

Choose Your Battery Option*

BigBattery NEXUS BigBattery ETHOS BigBattery HUSKY2 INV EG4 280Ah All Weather EG4 280Ah Indoor EG4 314Ah All Weather EG4 314Ah Indoor None

Choose Your ESS Configuration*

1x Inverter

Standard

2x Inverter

Large

3x Inverter

3 Phase

SKU: K0710-V Category:
30% Federal Tax Credit AvailableThis system qualifies for federal rebates.
Learn More Here
Free Shipping on orders $5000+

Compatible Accessories & Additional Add-ons

 
 
ETHOS- Lithium iron phosphate battery
ETHOS- Lithium battery storage
ETHOS- solar batteries
ETHOS- Lithium ion battery
ETHOS- solar battery

.

 

 

Battery Downloads

SKU:K0183, K0184, K0710, K0711, K0185,K0186, K0187, K0188, K0189, K0190
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
UL1973 Certificate:DownloadDOWNLOAD
Safety Data Sheet:DownloadDOWNLOAD
CEC Listing – BigBattery ETHOS + EG4 12000XP:Go to linkGO TO LINK

Battery Specifications

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
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:32°F – 113°F (0°C – 45°C)
Discharge Temperature Range:-4°F – 140°F (-20°C – 60°C)
Optimal Discharge Temperature Range:59°F – 95°F (15°C – 35°C)
Storage Temperature Range (SoC >50%):-4°F – 113°F (-20°C – 45°C) (Max 6 months)
Weight:273 lb (123.8 kg)
Dimensions (D×W×H):6.7 in × 26.5 in × 43.3 in
Max Connections:Up to (16) parallel connections per control box
Protection Rating:IP65 / NEMA 4X
Communications:CANBus / RS485
Certifications:UL9540A, UL1973, & UN38.3

Inverter Downloads

SKU:K0183, K0184, K0710, K0711, K0185,K0186, K0187, K0188, K0189, K0190
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
UL1741 Certificate:DownloadDOWNLOAD
UL9540 Certificate:DownloadDOWNLOAD
WiFi Configuration Guide:DownloadDOWNLOAD
CEC Listing – BigBattery ETHOS + 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

 
 
ETHOS- Lithium iron phosphate battery
ETHOS- Lithium battery storage
ETHOS- solar batteries
ETHOS- Lithium ion battery
ETHOS- solar battery

.

 

 

Battery Downloads

SKU:K0183, K0184, K0710, K0711, K0185,K0186, K0187, K0188, K0189, K0190
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
UL1973 Certificate:DownloadDOWNLOAD
Safety Data Sheet:DownloadDOWNLOAD
CEC Listing – BigBattery ETHOS + EG4 12000XP:Go to linkGO TO LINK

Battery Specifications

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
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:32°F – 113°F (0°C – 45°C)
Discharge Temperature Range:-4°F – 140°F (-20°C – 60°C)
Optimal Discharge Temperature Range:59°F – 95°F (15°C – 35°C)
Storage Temperature Range (SoC >50%):-4°F – 113°F (-20°C – 45°C) (Max 6 months)
Weight:273 lb (123.8 kg)
Dimensions (D×W×H):6.7 in × 26.5 in × 43.3 in
Max Connections:Up to (16) parallel connections per control box
Protection Rating:IP65 / NEMA 4X
Communications:CANBus / RS485
Certifications:UL9540A, UL1973, & UN38.3

Inverter Downloads

SKU:K0183, K0184, K0710, K0711, K0185,K0186, K0187, K0188, K0189, K0190
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
UL1741 Certificate:DownloadDOWNLOAD
UL9540 Certificate:DownloadDOWNLOAD
WiFi Configuration Guide:DownloadDOWNLOAD
CEC Listing – BigBattery ETHOS + 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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