Product Summary:

The EG4 314Ah WallMount Indoor LiFePO₄ Battery is a high-capacity, UL-certified energy storage solution designed for residential and commercial ESS applications. Delivering approximately 16kWh of storage, it provides reliable, long-lasting performance for home backup, energy savings, and off-grid systems.

 

Built with advanced LiFePO₄ battery chemistry, this system offers 8,000+ cycles at 80% depth of discharge, ensuring exceptional lifespan and value. An intelligent Battery Management System (BMS) with real-time monitoring and an integrated LCD touchscreen allows for easy system visibility and control.

 

Designed for safety and performance, the battery includes automatic self-heating for cold environments and an emergency stop (E-Stop) for rapid shutdown when needed. With RS485 and CANBus communication, it integrates seamlessly with leading hybrid inverters for flexible grid-tied and off-grid installations.

Ships From: Texas, USA
Warranty: 10 Years
Support: Lifetime USA-Based Tech Support

 

Compatibility

UL 9540 Certified + Closed-Loop Communication (Grid-Tied):

  • EG4 FlexBoss18

  • EG4 FlexBoss21

Closed-Loop Communication (Off Grid Non-UL 9540 Installs):

  • All BigBattery APEX Inverters

  • All EG4 Inverters

Key Features
  • ~16kWh LiFePO₄ Battery – High-capacity, safe lithium storage
  • 8,000+ Cycle Life – Long-lasting performance at 80% DoD
  • UL-Certified Design – Built for safe, code-compliant installations
  • Advanced BMS Monitoring – Real-time performance tracking and protection
  • LCD Touchscreen Display – Easy system control and diagnostics
  • Automatic Self-Heating – Reliable operation in cold environments
  • Emergency Stop (E-Stop) – Rapid shutdown for enhanced safety
  • RS485 & CANBus Communication – Seamless inverter integration
  • Wall-Mount Indoor Design – Clean installation for homes and commercial spaces
  • Maintenance-Free Operation – No routine servicing required

A high-capacity, reliable battery solution built for long-term performance, safety, and energy independence.

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<S functions, including WiFi/Bluetooth connectivity, active cell balancing logic, compatibility with our other WallMount batteries, and much more. They utilize the same quick connection terminals for rapid installation but have an additional bolt-style terminal for adding any ring connection necessary (such as a a classic Chargeverter).

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#:FEWAW-48161-G1
Spec Sheet:DownloadPENDING
User Manual:DownloadPENDING
Quick Start Guide:DownloadPENDING
Certification of Compliance:DownloadPENDING
Certification of Conformity:DownloadPENDING

Battery Specifications

Product Type:LFP Battery
Battery Type:Lithium Iron Phosphate (LFP)
Model Number:WM48314AWXX (XX is a number between 00 – 99)
Nominal Energy Capacity:16kWh
Usable Energy (DOD%):12.86kWh (80% recommended)
Voltage Range:47.5 – 57.6 VDC
Nominal Voltage:51.2 VDC
Capacity:314Ah
Charging Voltage Range:56 – 57 VDC
Discharging Cut-off Voltage:47.5 VDC
Max Continuous Charge Current:157A
Max Continuous Discharge Current:200A
Continuous Charge/Discharge Power:8/10.2 kW
Recommended Charging/Discharging Rate:0.5C
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
Storage Temperature 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 × W × 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)
Recommended DOD Setting Note*:EG4 recommends this value be set no lower than 20% to maintain the recommended 80% Depth of Discharge.
Storage Temperature Note**:Less than 3 months of storage. If longer than 3 months, recommended storage temperature will be 59°F – 86°F (15°C – 30°C).
Weight:309 lbs. (140 kg)
Enclosure Rating:IP67
Mounting Options:Wall attatched/Floor mount
Display/Indicators:LED Status
Connector Type:Degson quick connector/screw terminal
UL 1973:Pending
UL 9540:Pending
UL 9540A:Pending
UN 38.3:Pending
Cycle Life (70% EOL Capacity):10000 cycles @ 0.5C, 25°C, 80% DOD
Design Life*:15 years
Warranty:10 years or 10000 cycles
Application Type:Residential/Commercial/Off-grid/Backup
Lifetime Energy Throughput:122.2MWh
Note:Information subject to change without notice.

 

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<S functions, including WiFi/Bluetooth connectivity, active cell balancing logic, compatibility with our other WallMount batteries, and much more. They utilize the same quick connection terminals for rapid installation but have an additional bolt-style terminal for adding any ring connection necessary (such as a a classic Chargeverter).

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#:FEWAW-48161-G1
Spec Sheet:DownloadPENDING
User Manual:DownloadPENDING
Quick Start Guide:DownloadPENDING
Certification of Compliance:DownloadPENDING
Certification of Conformity:DownloadPENDING

Battery Specifications

Product Type:LFP Battery
Battery Type:Lithium Iron Phosphate (LFP)
Model Number:WM48314AWXX (XX is a number between 00 – 99)
Nominal Energy Capacity:16kWh
Usable Energy (DOD%):12.86kWh (80% recommended)
Voltage Range:47.5 – 57.6 VDC
Nominal Voltage:51.2 VDC
Capacity:314Ah
Charging Voltage Range:56 – 57 VDC
Discharging Cut-off Voltage:47.5 VDC
Max Continuous Charge Current:157A
Max Continuous Discharge Current:200A
Continuous Charge/Discharge Power:8/10.2 kW
Recommended Charging/Discharging Rate:0.5C
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
Storage Temperature 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 × W × 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)
Recommended DOD Setting Note*:EG4 recommends this value be set no lower than 20% to maintain the recommended 80% Depth of Discharge.
Storage Temperature Note**:Less than 3 months of storage. If longer than 3 months, recommended storage temperature will be 59°F – 86°F (15°C – 30°C).
Weight:309 lbs. (140 kg)
Enclosure Rating:IP67
Mounting Options:Wall attatched/Floor mount
Display/Indicators:LED Status
Connector Type:Degson quick connector/screw terminal
UL 1973:Pending
UL 9540:Pending
UL 9540A:Pending
UN 38.3:Pending
Cycle Life (70% EOL Capacity):10000 cycles @ 0.5C, 25°C, 80% DOD
Design Life*:15 years
Warranty:10 years or 10000 cycles
Application Type:Residential/Commercial/Off-grid/Backup
Lifetime Energy Throughput:122.2MWh
Note:Information subject to change without notice.

 

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