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EG4-WallMount Indoor Battery | 48V 314Ah | 16kWh | UL9540A | Self-Heating

EG4-WallMount Indoor Battery | 48V 314Ah | 16kWh | UL9540A | Self-Heating

BY: EG4 | SKU: FEWMT-48161-G1 Availability: In Stock
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EG4-WallMount Indoor Battery | 48V 314Ah | 16kWh | UL9540A | Self-Heating

The EG4-WallMount Indoor Battery (48V 314Ah, 16kWh) is a high-capacity, indoor-rated energy storage solution engineered for residential and light commercial solar and backup power systems. Built with Lithium Iron Phosphate (LFP) chemistry, this battery delivers exceptional safety, long cycle life, and reliable performance for daily energy storage and backup applications.

Designed for modern energy systems, the EG4 WallMount Battery features an integrated Battery Management System (BMS), self-heating capability for cold environments, and support for large parallel configurations. With high efficiency, robust protection features, and flexible inverter compatibility, it is an ideal solution for homeowners seeking dependable, scalable indoor energy storage.

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EG4-WallMount Indoor Battery | 48V 314Ah | 16kWh | UL9540A | Self-Heating Features

High-Capacity 16kWh Energy Storage - Provides 16kWh nominal energy with 12.86kWh usable energy (80% DoD recommended) for dependable daily use and backup power.

Lithium Iron Phosphate (LFP) Chemistry - Offers enhanced safety, thermal stability, and long cycle life compared to traditional lithium-ion batteries.

Self-Heating Battery Technology - Integrated battery heater enables reliable charging and operation in cold environments, automatically activating when internal temperatures drop.

Powerful Charge & Discharge Performance - Supports up to 10.2kW continuous charge/discharge power with 12.8kW peak power (3 seconds) for handling demanding loads.

Integrated Smart Battery Management System (BMS) - Built-in BMS with active balancing protects against over/under voltage, over-current, short circuit, and temperature extremes.

High Parallel Scalability - Supports up to 32 batteries in parallel, making it suitable for larger residential or light commercial energy storage systems.

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EG4-WallMount Indoor Battery | 48V 314Ah | 16kWh | UL9540A | Self-Heating Applications

  • Residential solar energy storage – Store excess solar power for nighttime use
  • Home backup power – Maintain power during grid outages
  • Hybrid inverter systems – Integrates with compatible 48V inverter platforms
  • Load shifting – Reduce peak energy costs by using stored power
  • Cold-climate installations – Self-heating design supports reliable winter operation
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What's Included

Everything you need is included with your product.

  • (1) Mounting Bracket
  • (1) X Bracket
  • (6) Expansion Bolt
  • (2) Red & Black Battery to Inverter Power Cables (3.3 FT)
  • (1) Battery to Inverter Comm Cable (5 FT)
  • (1) User Manual

Warranty

  • 10-year warranty

EG4-WallMount Indoor Battery | 48V 314Ah | 16kWh | UL9540A | Self-Heating Specifications

Parameter Specification
Product Type LFP Battery
Battery Type Lithium Iron Phosphate (LFP
Model Number WM-48-314-IN-XX / WM48314INXX (XX is a number between 00 – 99

Electrical Characteristics

Parameter Specification
Nominal Energy Capacity 16 kWh
Usable Energy (DOD%) 12.86 kWh (80% recommended)
Recommended Voltage Range 47.5 – 57.6 VDC
Nominal Voltage 51.2 VDC
Capacity 314 Ah
Charging Voltage Range 56 – 57 VDC
Discharging Cut-Off Voltage 47.5 VDC
Max Continuous / Recommended Charge Current 157A / 157A
Max Continuous / Recommended Discharge Current 200A / 157A
Continuous Charge / Discharge Power 8 / 10.2 kW
Recommended Charging / Discharging Rate 0.5C
Short Circuit Current 1700A, 15 ms delay
Peak Power 12.8 kW (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

Battery Heater Specifications

Parameter Specification Condition
Voltage 56V -
Power Consumption 448W -
Internal Battery Temperature ≤32°F (0°C) / ≥37°F (3°C) Heat On / Heat Off

Environmental Specifications

Parameter Specification
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)

Mechanical Specifications

Parameter Specification
Weight 293.2 lbs (133 kg)
Enclosure Rating IP20
Enclosure Rating Floor mount / wall attached
Display / Indicators LED Status
Connector Type Degson quick connector / screw terminals

Certifications & Compliance

Parameter Specification
UL 1973 Yes
UL 9540 See https://eg4electronics.com/ for supported UL 9540 configurations
UL 9540A Cell, Module (Pending), Unit Level (Pending)
UN 38.3 Yes

Warranty & Lifecycle

Parameter Specification
Cycle Life (70% EOL Capacity)* 10,000 cycles @ 0.5C, 25°C, 80% DOD
Design Life 15 years
Warranty 10 years or 10,000 cycles
Lifetime Production** 122.2 MWh
Application Type Residential / Commercial / Off-Grid / Backup

Frequently-Asked Questions

Is this battery compatible with 48V inverter systems?

Yes. The EG4 WallMount Battery is designed for 48V systems and supports RS485 and CAN communication for compatible inverters.

Can multiple batteries be connected together?

Yes. Up to 32 units can be connected in parallel, allowing significant system expansion.

Does this battery work in cold climates?

Yes. The integrated self-heating system allows the battery to operate and charge reliably in cold temperatures.

Is this battery suitable for indoor installation?

Yes. This model is designed specifically for indoor wall-mounted installation.