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

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.


Everything you need is included with your product.
| 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 |
| 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 |
| Parameter | Specification | Condition |
| Voltage | 56V | - |
| Power Consumption | 448W | - |
| Internal Battery Temperature | ≤32°F (0°C) / ≥37°F (3°C) | Heat On / Heat Off |
| 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) |
| 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 |
| 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 |
| 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 |
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.
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