DOWNLOADEG4 WallMount Indoor Battery: 10-Year EG4 Manufacturer Warranty
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EG4
EG4 WallMount 314Ah Indoor Battery ESS+ FlexBOSS21 Hybrid Inverter
EG4 WallMount 314Ah Indoor Battery ESS+ FlexBOSS21 Hybrid Inverter
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$7,395.00 USD
Regular price
$8,045.00 USD
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$7,395.00 USD
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EG4-WallMount Indoor Battery ESS | 48V 314Ah | 16kWh | EG4 FlexBOSS21 Hybrid Inverter
Product Summary:
The EG4 314Ah Indoor Battery + EG4 FlexBOSS21 ESS System delivers smart power, simple reliability, and scalable energy independence for both on-grid and off-grid applications. Combining the high-capacity 16kWh EG4 WallMount Indoor LiFePO₄ battery with the advanced FlexBOSS21 hybrid inverter, this system provides dependable whole-home backup and efficient energy management in a clean, space-saving design.
The FlexBOSS21 delivers 12kW output and up to 21,000W PV input with 3 MPPTs, maximizing solar production and system flexibility. Paired with the EG4 314Ah battery – featuring 200A continuous output, 8,000+ cycle life, and third-generation BMS technology – this system ensures stable, high-performance energy delivery for residential and small commercial use.
Designed with UL 9540 certified configurations, advanced battery management, and U.S.-engineered components, this system ensures safe, maintenance-free performance with seamless closed-loop communication between battery and inverter.
Ships From: Texas, USA
Warranty: 10 Years (Battery), 10 Years (Inverter)
Support: Lifetime USA-Based Tech Support
Compatibility
Integrated & Optimized System:
EG4 314Ah Indoor Battery + EG4 FlexBOSS21 Hybrid Inverter
Expandable & Flexible:
Cross-compatible with other EG4 battery 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
- 21,000W PV Input / 12kW Output – High-capacity power for residential and commercial systems
- 16kWh LiFePO₄ Battery (314Ah) – High-density, safe lithium storage
- 200A Continuous Output / 12.8kW Peak – Powers heavy household loads and backup systems
- 8,000+ Cycle Life – Long-lasting performance at 80% DoD
- Advanced 3rd-Gen BMS – Improved monitoring, faster response, and precise balancing
- Auto-ID Technology – Simplifies installation and system configuration
- Self-Heating Function – Reliable performance in cold climates
- Closed-Loop Communication – Seamless coordination between battery and inverter
- GridBOSS Integration – Advanced load management, AC coupling, and generator support
- Wall or Floor Mount Design (IP20) – Flexible, space-saving indoor installation
- Maintenance-Free Operation – No routine servicing required
A high-capacity, intelligent energy storage system built for performance, flexibility, and long-term energy independence – with the reliability and control modern energy systems demand.
Downloads & Specifications
Battery Specifications
Product Type:Low Voltage LFP Battery
Battery Type:Lithium Iron Phosphate (LFP)
Model Number:WM-48-314-IN-XX (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:16
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):34.1 in. × 18.1 in. × 9.6 in. (865 mm × 460 mm × 245 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:293.2 lbs. (133 kg)
Enclosure Rating:IP20
Mounting Options:Wall/Floor mount
Display/Indicators:LED Status
Connector Type:Degson quick connector/screw terminal
UL 1973:Yes
UL 9540:DC ESS, AC ESS with EG4 18kPV, 12kPV, FlexBOSS 21, FlexBOSS 18*
UL 9540A:Batt to Batt spacing of 6 in.
UN 38.3:Yes
FCC Part 15 (EMC):Yes
Protection Class:Class B
Cycle Life (70% EOL Capacity):10000 cycles @ 0.5C, 25°C, 80% DOD
Design Life*:10 years
Warranty:10 years or 10000 cycles
Application Type:Residential/Commercial/Off-grid/Backup
Lifetime Energy Throughput (Calculated):(51.2V×314Ah/1000×80%×10000/1000)90% = 115.7 MWh or (12861 kWh×10000 cycles×90% efficiency) = 115.7 MWh
Note:Information subject to change without notice.
Inverter Specifications
Model:IV-16000-HYB-AW-FX-XX
CEC Model #:IV-16000-HYB-AW-FX-XX {240V} | IV-16000-HYB-AW-FX-XX {208V}
Type:Hybrid
Design Topology:High Frequency – Transformerless
Nominal Voltage:120/240 or 208 VAC
Frequency:50/60 Hz
Phase Support:1ø
Nominal Output Voltage:120/240 VAC; 120/208 VAC (L1/L2/N required)
Max. Continuous Output:66.7 A | 16 kW
Max. Continuous Output – Battery Only:50 A | 6 kW
Max. Continuous Output – With PV & Grid @25°C:66.7 A | 16 kW
Peak Power:24,000 W (0.5 s) | 18,000 W (1 s) | 15,000 W (6 min) | 13,200 W (12 min)
Locked Rotor Amps (LRA):195 A
Max. Continuous Output Per-Leg:50 A | 6 kW
Power Factor:0.99 @ Full Load
Max. Pass-Thru Current from Grid:90 A
Nominal Grid Voltage:120/240 VAC | 120/208 VAC (L1/L2/N required)
Max. Grid Input Power to Inverter (w/out Pass-Thru):50 A | 12 kW
Max. Grid Circuit Rating (w/ Pass-Thru):90 A
Nominal Voltage:51.2 VDC
Operating Voltage Range:40 – 60 VDC
Max. Charge Current (DC Amps):250 A DC
Max. Discharge Current (DC Amps):250 A DC
Battery Charge/Discharge Ripple Current:< 5%
# of MPPTs:3
Rated Current per MPPT:26 A (MPPT 1) | 26 A (MPPT 2) | 15 A (MPPT 3)
Inputs per MPPT:3 | 2 (MPPT 1) | 2 (MPPT 2) | 1 (MPPT 3)
Short-Circuit Current Rating per MPPT:31 A (MPPT 1) | 31 A (MPPT 2) | 19 A (MPPT 3)
Max. DC Input Voltage*:600 VDC
MPPT DC Startup Voltage:200 VDC
MPPT Full Power Voltage Range**:250 – 440 VDC
MPPT DC Operating Voltage Range:120 – 240 VDC
MPPT Voltage High Protection***:550 VDC
Recommended Max. Solar Array Power (STC):21 kW
Transfer Time (Grid to Battery Switching Time):20 ms (Default), 10 ms (Configurable)
Open Loop Response Time (OLRT):< 2 s
Time to Steady State:< 10 s
CEC Weighted Efficiency:97%
Max. Efficiency: PV to Grid/Load:97%
Max. Efficiency: Battery to Grid/Load:94%
Max. Efficiency: PV to Battery:94.5%
Max. Efficiency: AC to Battery:94%
Idle Consumption (Standby Mode):< 65 W @ 25 °C
Display:Optional EG4 FlexBOSS Screen Kit
User Interface:App / Web
Remote Connectivity:Wi-Fi, Cellular, and Ethernet (Wi-Fi dongle included by default)
Operating Temperature Range:-13° – 140°F (-25° – 60°C)
Storage Temperature Range:-13° – 140°F (-25° – 60°C)
Operating Humidity:0–95% relative humidity
Max. Altitude of Operation:< 6,561 ft (< 2,000 m)
Enclosure Rating:NEMA 4X
Cooling Method:Fans
Noise:< 50 dB @ 3 ft
Dimensions (H × W × D):30.43 × 22.28 × 11.22 in (773 × 566 × 285 mm)
Unit Weight:121 lbs (55 kg)
Mounting:Wall mount
Max # of Inverters in Parallel:16 units
Certifications:UL 1741, UL 1741 PCS CRD TEST, UL3141
EMC Compliance:FCC Part 15 Class B
Safety Class:Class I
Environmental Protection:RoHS Compliant
AC Input Breaker:90 A
AC Output Breaker:80 A
PV Input Breaker:32 A per MPPT
Battery Breaker:250 A DC
Battery Downloads
Introducing The EG4 WallMount Indoor Battery
