EG4 WallMount 314Ah All Weather Battery + 12000XP Inverter V2
EG4 WallMount 314Ah All Weather Battery + 12000XP Inverter V2 - Image 2
EG4 WallMount 314Ah All Weather Battery + 12000XP Inverter V2 - Image 3
EG4 WallMount 314Ah All Weather Battery + 12000XP Inverter V2 - Image 4
EG4 WallMount 314Ah All Weather Battery + 12000XP Inverter V2 - Image 5
EG4 WallMount 314Ah All Weather Battery + 12000XP Inverter V2 - Image 6
EG4 WallMount 314Ah All Weather Battery + 12000XP Inverter V2 - Image 7

Product Summary:

The EG4 314Ah All-Weather Battery + EG4 12000XP ESS System is a high-capacity, rugged energy solution designed for both on-grid and off-grid applications. Combining the 16kWh EG4 WallMount All-Weather LiFePO₄ battery with the powerful EG4 12000XP hybrid inverter, this system delivers reliable, scalable energy for residential, commercial, and backup power needs.

 

The EG4 12000XP provides up to 12,000W split-phase output with 24,000W PV input and dual MPPTs, enabling strong solar production and seamless power management between solar, battery, and grid. Paired with the 314Ah All-Weather battery – featuring 200A continuous output, 8,000+ cycle life, and a next-generation smart BMS with active cell balancing – this system ensures stable, efficient energy delivery over the long term.

 

Built for outdoor installations, the battery features a durable IP67-rated enclosure, integrated self-heating for cold climates, and Bluetooth + Wi-Fi connectivity for real-time monitoring and OTA updates. Designed for easy system expansion and compatibility with existing 280Ah form factor setups, this ESS delivers advanced performance with flexible scalability.

Ships From: Texas, USA
Warranty: 10 Years (Battery), 5 Years (Inverter)
Support: Lifetime USA-Based Tech Support

 

Compatibility

Integrated & Optimized System:

  • EG4 314Ah All-Weather Battery + EG4 12000XP Hybrid Inverter

Expandable & Flexible:

  • Compatible with existing EG4 280Ah form factor systems
  • Scalable energy storage for growing system needs
  • 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 whole-home and commercial applications
  • 24,000W PV Input – High solar capacity with dual MPPT optimization
  • 16kWh LiFePO₄ Battery (314Ah) – High-capacity, durable energy storage
  • 200A Continuous Output (~9.6kW) – Supports high-demand loads
  • IP67 Outdoor-Rated Design – Built to withstand dust, water, and harsh environments
  • 8,000+ Cycle Life – Long-lasting performance at 80% DoD
  • Advanced Smart BMS – Active cell balancing for improved efficiency and lifespan
  • Self-Heating Function – Reliable operation in cold climates
  • Bluetooth & Wi-Fi Monitoring – Real-time tracking and OTA firmware updates
  • Closed-Loop Communication – Seamless coordination between battery and inverter
  • Maintenance-Free Operation – No routine servicing required

A high-capacity, all-weather energy storage system built for durability, flexibility, and long-term energy independence.

EG4 WallMount 314Ah All Weather Battery + 12000XP Inverter V2

$6,016.96
SKU# K0273

Choose Your Inverter Option*

EG4 18kPV EG4 FlexBoss18 EG4 FlexBoss21 None

Choose Your Battery Option*

BigBattery ETHOS EG4 280Ah All Weather EG4 314Ah All Weather EG4 314Ah 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 314Ah All Weather EG4 314Ah Indoor None

Choose Your ESS Configuration*

1x Inverter

Standard

2x Inverter

Large

3x Inverter

3 Phase

SKU: K0273-V Category:
Free Shipping on orders $3000+

-

Introducing the WallMount 314Ah Batteries!

EG4 is proud to announce the next generation of our WallMount batteries with our 314Ah Indoor and All Weather versions! On top of the capacity improvements over our previous batteries, the WallMount 314Ahs have newly developed B

The WallMount 314Ah batteries are compatible with the 280Ah form factor, so they will slot into existing systems easily. They pair well with the FlexBOSS21 and 18kPV when looking for whole home ESS solutions.

Battery Downloads

SKU#:K0268, K0269, K0270, K0271, K0272
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
Certification 9540A:DownloadDOWNLOAD
Certification 9540:DownloadDOWNLOAD

Battery Specifications

Battery Specifications:EG4 314Ah All Weather Battery
Product Type:LFP Battery
Battery Type:Lithium Iron Phosphate
Model Number:WM48314AWXX (XX is a number between 00-99)
Nominal Energy Capacity:16kWh
Recommended Usable Energy:12.86kWh (80% recommended)
Nominal Voltage(kWh):51.2VDC
Capacity:315Ah
Charging Voltage Range:56 – 57 VDC
Discharging Cut-Off Voltage:44.8 VDC
Max Continuous/Recommended Charge Current:157A/157A
Max Continuous/Recommended Discharge Current:200A/157A
Continuous Charge/Discharge Power:8/10.2kW
Recommended Charging/Discharging Rate:0.5C
Short Circuit Current:1700A, 15ms delay
Peak Power:12.8kW (3 sec)
Round-Trip Efficiency:95%
Max Parallel Units:32
Protection Features:Over/Under Voltage, Over-Current, Short Circuit,
High/Low Temp
Battery Management System (BMS):Integrated, Active Balancing
Communication Protocols:RS485, CAN
Battery Breaker:250A
Voltage:56V
Power Consumption:448W
Internal Battery Temp:≤32°F (0°C)/≥37°F (3°C)/Heat On/Heat Off
Storage Temp Range:-4 – 131°F (-20 – 55°C)
Humidity Range:5% – 95% RH (non-condensing)
Altitude:9843 ft. (<3000 m)
Cooling Method:Natural Convection
Dimensions(H x W x D):34.6 in. × 21.7 in. × 9.3 in. (880 mm × 550 mm × 235 mm)
Operating Temperature Range:Charge: 32 – 122°F (0 – 50°C)
Discharging: -4 – 131°F (-20 – 55°C)
Weight:448W
Enclosure Rating:≤32°F (0°C)/≥37°F (3°C)/Heat On/Heat Off
Mounting Options:-4 – 131°F (-20 – 55°C)
Display/Indicators:5% – 95% RH (non-condensing)
Connector Type:9843 ft. (<3000 m)
UL 1973:Yes
UL 9540:See https://eg4electronics.com/ for
supported UL 9540 configurations(<3000 m)
UL 9540A:Yes
Cycle Life(70% EOL Capacity)*:10000 cycles @ 0.5C, 25°C, 80% DOD
Design Life:10 years
Warranty:10 years or 10000 cycles
Lifetime Production:122.2MWh
Application Type:Residential/Commercial/Off-Grid/Backup

Inverter Downloads

SKU:K0154, K0155, K0156, K0160, K0161, K0162, K0163
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
UL1741 Certificate:DownloadDOWNLOAD
UL9540 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)

Introducing the WallMount 314Ah Batteries!

EG4 is proud to announce the next generation of our WallMount batteries with our 314Ah Indoor and All Weather versions! On top of the capacity improvements over our previous batteries, the WallMount 314Ahs have newly developed B

The WallMount 314Ah batteries are compatible with the 280Ah form factor, so they will slot into existing systems easily. They pair well with the FlexBOSS21 and 18kPV when looking for whole home ESS solutions.

Battery Downloads

SKU#:K0268, K0269, K0270, K0271, K0272
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
Certification 9540A:DownloadDOWNLOAD
Certification 9540:DownloadDOWNLOAD

Battery Specifications

Battery Specifications:EG4 314Ah All Weather Battery
Product Type:LFP Battery
Battery Type:Lithium Iron Phosphate
Model Number:WM48314AWXX (XX is a number between 00-99)
Nominal Energy Capacity:16kWh
Recommended Usable Energy:12.86kWh (80% recommended)
Nominal Voltage(kWh):51.2VDC
Capacity:315Ah
Charging Voltage Range:56 – 57 VDC
Discharging Cut-Off Voltage:44.8 VDC
Max Continuous/Recommended Charge Current:157A/157A
Max Continuous/Recommended Discharge Current:200A/157A
Continuous Charge/Discharge Power:8/10.2kW
Recommended Charging/Discharging Rate:0.5C
Short Circuit Current:1700A, 15ms delay
Peak Power:12.8kW (3 sec)
Round-Trip Efficiency:95%
Max Parallel Units:32
Protection Features:Over/Under Voltage, Over-Current, Short Circuit,
High/Low Temp
Battery Management System (BMS):Integrated, Active Balancing
Communication Protocols:RS485, CAN
Battery Breaker:250A
Voltage:56V
Power Consumption:448W
Internal Battery Temp:≤32°F (0°C)/≥37°F (3°C)/Heat On/Heat Off
Storage Temp Range:-4 – 131°F (-20 – 55°C)
Humidity Range:5% – 95% RH (non-condensing)
Altitude:9843 ft. (<3000 m)
Cooling Method:Natural Convection
Dimensions(H x W x D):34.6 in. × 21.7 in. × 9.3 in. (880 mm × 550 mm × 235 mm)
Operating Temperature Range:Charge: 32 – 122°F (0 – 50°C)
Discharging: -4 – 131°F (-20 – 55°C)
Weight:448W
Enclosure Rating:≤32°F (0°C)/≥37°F (3°C)/Heat On/Heat Off
Mounting Options:-4 – 131°F (-20 – 55°C)
Display/Indicators:5% – 95% RH (non-condensing)
Connector Type:9843 ft. (<3000 m)
UL 1973:Yes
UL 9540:See https://eg4electronics.com/ for
supported UL 9540 configurations(<3000 m)
UL 9540A:Yes
Cycle Life(70% EOL Capacity)*:10000 cycles @ 0.5C, 25°C, 80% DOD
Design Life:10 years
Warranty:10 years or 10000 cycles
Lifetime Production:122.2MWh
Application Type:Residential/Commercial/Off-Grid/Backup

Inverter Downloads

SKU:K0154, K0155, K0156, K0160, K0161, K0162, K0163
Spec Sheet:DownloadDOWNLOAD
User Manual:DownloadDOWNLOAD
UL1741 Certificate:DownloadDOWNLOAD
UL9540 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)
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EG4 WallMount 314Ah All Weather Battery + 12000XP Inverter V2

Price range: $6,016.96 through $30,203.80