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

Power your home or backup system with the EG4 WallMount Indoor Battery, engineered for high-capacity energy storage and long-term reliability. This 48V 314Ah, 16kWh lithium module features advanced self-heating technology for dependable performance in cold environments, along with UL9540A safety certification. Designed for clean indoor installation, it delivers stable, high-output energy for residential, off-grid, and hybrid systems.

KEY FEATURES

Cross-Compatible with Other EG4 Models: Seamlessly integrates with existing
EG4 battery systems for flexible scaling and expanded storage capacity. (Note: UL9540 Certified only with Flexboss 18 & Flexboss 21)
Hybrid Wall or Floor Mount Design: Flexible installation options with a durable,
space-saving enclosure (IP20 rated).
High-Capacity Storage: 16kWh nominal energy and 314Ah capacity for
reliable, high-output performance.
Auto-ID Technology: Automatically recognizes and syncs new batteries during
installation, simplifying system setup and configuration.

What's Included:

1 x EG4 WallMount 314Ah Indoor Battery
1 x Mounting Bracket (Will come attached to the back of the battery)
Red and Black Degson power cables (2 set each) 2/0 AWG (39.4 in.)
2 x M10 Lifting Eye Bolt
6 x Expansion Bolt M8*70
1 x Battery to Inverter Communication Cable (59.1 in.)
1 x 120Ω Terminating Resistor
1 x Wi-Fi/Bluetooth Antenna
1 x X-Bracket
User Manual

Specifications

Category	Details
Product Type	Low Voltage LFP Battery
Battery Type	Lithium Iron Phosphate (LFP)
Model Number	WM-48-314-IN-XX (XX = 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 kW / 10.2 kW
Recommended Charge/Discharge 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
BMS	Integrated, Active Balancing
Communication Protocols	RS485, CAN
Battery Breaker	250A
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 × W × D)	34.1 × 18.1 × 9.6 in (865 × 460 × 245 mm)
Operating Temperature	Charge: 32 – 122°F (0 – 50°C) • Discharge: -4 – 131°F (-20 – 55°C)
Recommended DOD Setting Note	Do not set below 20% to maintain 80% DOD
Storage Temp Note	>3 months storage: recommended 59 – 86°F (15 – 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	Battery-to-battery spacing: 6 in
UN 38.3	Yes
FCC Part 15 (EMC)	Yes
Protection Class	Class B
Cycle Life (70% EOL)	10,000 cycles @ 0.5C, 25°C, 80% DOD
Design Life	10 years
Warranty	10 years or 10,000 cycles
Application Type	Residential / Commercial / Off-grid / Backup
Lifetime Energy Throughput	115.7 MWh

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