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The EG4 WallMount 314Ah All-Weather Lithium Battery is a high-capacity lithium iron phosphate battery for homeowners building a residential backup power, off-grid, or energy storage system. With 314Ah capacity, 51.2V nominal voltage, and 16kWh nominal energy capacity, this battery is designed to store serious energy for real-world power needs without turning your garage, utility space, or backup setup into a science project.
This is not a small portable power station you carry to a campsite. It is a 309 lb. residential energy storage battery designed for indoor and outdoor low-voltage applications when installed correctly by qualified personnel. For homeowners who want a more permanent battery backup foundation, the EG4 WallMount 314Ah All Weather Battery gives you a large-capacity LiFePO4 storage option with integrated battery management, built-in heating, communication capability, and flexible installation support.
The EG4 WallMount 314Ah All Weather Battery provides 16kWh of nominal energy capacity, with a recommended usable energy rating of 12.86kWh at 80% depth of discharge. That makes it well suited for homeowners who want meaningful stored energy for outages, off-grid living, or backup power planning.
Because every home uses power differently, exact runtime depends on the connected loads, inverter setup, system design, and how the battery is charged and discharged. Instead of guessing, this battery gives you a strong storage foundation that can be sized into a complete system by a qualified installer.
This battery uses lithium iron phosphate cells, commonly known as LiFePO4 or LFP. For homeowners comparing battery options, that matters because LFP batteries are widely used in energy storage systems where cycle life, thermal stability, and long-term performance are important buying factors.
The manual lists a cycle life of 10,000 cycles at 0.5C, 25°C, and 80% depth of discharge, with a design life of 10 years and a warranty of 10 years or 10,000 cycles. That makes this a battery for buyers thinking beyond the next storm and planning for years of backup power readiness.
The integrated Battery Management System continuously monitors cell voltage, current, and temperature. It also provides active cell balancing and built-in protections against over-voltage, under-voltage, over-current, short circuit, and high or low temperature conditions.
In practical terms, the BMS helps the battery operate within its intended limits. It is not a substitute for proper system design, installation, or inverter configuration, but it is an important layer of protection for a battery intended to serve as part of a residential backup power system.
The EG4 WallMount 314Ah All Weather Battery includes built-in battery heater specifications, with the heater turning on when the internal battery temperature reaches 32°F or lower and turning off when it reaches 37°F or higher. The listed heater power consumption is 448W.
This is especially helpful for homeowners installing backup power in locations where cold temperatures are part of the plan. The battery’s listed operating temperature range is 32°F to 122°F for charging and -4°F to 131°F for discharging, so proper placement and system design still matter.
The manual describes the battery as designed for both indoor and outdoor low-voltage residential energy storage applications. It also lists an IP67 enclosure rating, which supports its all-weather positioning when installed according to the manual and local requirements.
For indoor residential use, the manual specifies installation in areas such as attached or detached garages, sheds, enclosed utility closets, basements, or other designated storage or utility spaces. It also states not to install the unit in habitable or living spaces and not to install it in or near marine environments.
Despite the WallMount name, this battery is designed as a floor mount and wall-attached unit. The feet support the battery’s weight, while the wall bracket helps secure it in place. That detail matters because this is a heavy 309 lb. battery, not a shelf-mounted accessory.
Proper installation should follow the manual, applicable electrical and building codes, and the requirements of the local Authority Having Jurisdiction. Electrical work should be completed by qualified personnel.
The technical specifications list a maximum parallel unit count of 32, while the installation section also explains that systems using the internal busbars support up to six batteries connected in parallel per battery bank. Larger system designs may require external busbars or other approved layouts.
For a homeowner, the key takeaway is simple: this battery can be part of a larger energy storage system, but the final configuration should be verified before purchase. Inverter compatibility, battery spacing, communication wiring, code requirements, and accessories can all affect the correct system design.
The EG4 WallMount 314Ah All-Weather Lithium Battery makes the most sense in permanent or semi-permanent power systems where stored energy is needed for backup, resilience, or off-grid use.
This is not the right product for marine installations, grab-and-go camping power, or anyone looking for a lightweight portable unit. Think of it as the energy storage backbone of a more serious backup power system.
Compared to smaller portable power stations, the EG4 WallMount 314Ah All Weather Battery offers much larger stationary energy storage capacity, but it is not portable and does not include the all-in-one simplicity of a self-contained power station. It requires compatible system equipment and proper installation.
Compared to gas generators, this battery does not generate power from fuel. Instead, it stores energy for use through a compatible system. That means no fuel tank or engine on the battery itself, but it also means the system must be properly charged and sized before an outage occurs.
Compared to lead-acid battery banks, this LiFePO4 battery offers an integrated BMS, active balancing, listed cycle-life data, communications, and a compact energy storage format. The best choice depends on system goals, budget, electrical design, and the installer’s recommendations.
This battery may be a strong fit for homeowners who want a high-capacity residential battery and are already planning a proper energy storage system. It is especially relevant for customers working with an installer, building an EG4-based system, adding storage to an off-grid setup, or planning backup power beyond a small portable solution.
Important considerations include the battery’s 309 lb. weight, installation location, required clearances, compatible inverter selection, communication wiring, optional conduit box needs, and whether paralleling accessories are required. The manual identifies the WallMount All Weather Conduit Box as optional and notes that paralleling multiple batteries requires a paralleling kit purchased from the distributor.
No. This product is a battery module for an energy storage system. A complete backup power setup may require compatible inverter equipment, wiring, installation hardware, system controls, permits, and other components depending on the application.
The manual lists the battery capacity as 314Ah, nominal voltage as 51.2VDC, and nominal energy capacity as 16kWh. It also lists recommended usable energy as 12.86kWh at 80% depth of discharge.
Yes, the manual describes the battery as designed for indoor and outdoor low-voltage residential energy storage applications and lists an IP67 enclosure rating. Installation should still follow the manual, local code requirements, and the local Authority Having Jurisdiction.
Yes. The battery heater specifications list a 56V heater with 448W power consumption. The heater turns on at an internal battery temperature of 32°F or lower and turns off at 37°F or higher.
Yes, the manual includes instructions for connecting multiple EG4 WallMount 314Ah All Weather batteries in parallel. It also notes that a paralleling kit must be purchased from the distributor when connecting multiple batteries.
The EG4 WallMount 314Ah All-Weather Lithium Battery is a serious energy storage option for homeowners who want more than a temporary outage workaround. With LiFePO4 chemistry, 16kWh nominal capacity, integrated battery management, indoor and outdoor installation support, and expansion potential, it can serve as a strong foundation for a well-planned backup or off-grid power system.
At Outbound Power, we help customers think through real-world power needs before they buy. If you are comparing batteries, building a home backup system, or deciding how much stored energy makes sense for your property, this EG4 battery is worth considering as part of a properly designed system.
EG4 WallMount 314Ah All Weather Battery Specifications |
|
|---|---|
| Product Type | LFP Battery |
| Battery Type | Lithium Iron Phosphate (LiFePO4) |
| Model Number | WM48314AWXX (XX is a number between 00–99) |
| Nominal Energy Capacity | 16kWh |
| Recommended Usable Energy | 12.86kWh (80% recommended) |
| Nominal Voltage | 51.2V DC |
| Recommended Voltage Range | 47.5–56V DC |
| Capacity | 314Ah |
| Charging Voltage Range | 56–57V DC |
| Discharging Cut-Off Voltage | 44.8V DC |
| Max Continuous / Recommended Charge Current | 157A / 157A |
| Max Continuous / Recommended Discharge Current | 200A / 157A |
| Continuous Charge / Discharge Power | 8kW / 10.2kW |
| Recommended Charging / Discharging Rate | 0.5C |
| Short Circuit Current | 1700A, 15ms delay |
| 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 | Integrated, Active Balancing |
| Communication Protocols | RS485, CAN |
| Battery Breaker | 250A |
| Battery Heater Voltage | 56V |
| Battery Heater Power Consumption | 448W |
| Battery Heater Temperature Control | Heat On: ≤32°F (0°C) / Heat Off: ≥37°F (3°C) |
| Operating Temperature Range | Charge: 32°F–122°F (0°C–50°C) / Discharge: -4°F–131°F (-20°C–55°C) |
| Storage Temperature Range | -4°F–131°F (-20°C–55°C) |
| Humidity Range | 5%–95% RH, non-condensing |
| Altitude | 9843 ft. (<3000 m) |
| Cooling Method | Natural Convection |
| Dimensions | 34.6 in. × 21.7 in. × 9.3 in. (880 mm × 550 mm × 235 mm) |
| Weight | 309 lbs. (140 kg) |
| Enclosure Rating | IP67 |
| Mounting Options | Floor Mount / Wall Attached |
| Display / Indicators | LED Status |
| Connector Type | Degson Quick Connector / Screw Terminal |
| UL 1973 | Yes |
| UL 9540 | See EG4 documentation for supported UL 9540 configurations |
| UL 9540A | Yes |
| Cycle Life | 10,000 cycles @ 0.5C, 25°C, 80% DOD |
| Design Life | 10 years |
| Warranty | 10 years or 10,000 cycles |
| Lifetime Production | 122.2 MWh |
| Application Type | Residential / Commercial / Off-Grid / Backup |
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