EG4 | WallMount All-Weather Battery | 48V 314Ah | 16kWh | IP67 | Self-Heating | FEWAW-48161-G1

EG4 WallMount All-Weather 314Ah LiFePO₄ Battery

The EG4 WallMount All-Weather Battery is a 16kWh outdoor-rated energy storage battery built for residential and light commercial solar, off-grid systems, and whole-home backup power. It delivers 51.2V nominal voltage and 314Ah capacity in an IP67-rated enclosure sealed against dust and water, so it can be installed outdoors on an exterior wall or pad without a dedicated battery room. Built-in heaters keep it charging in cold climates, and its 12.86kWh recommended usable capacity at 80% depth of discharge (DoD) balances everyday energy with long battery life.

Built for Outdoor Installation

The sealed IP67 enclosure protects the battery from rain, snow, dust, and harsh weather. Integrated self-heating keeps the cells within their charging range in cold conditions, and natural convection cooling means no fans or active cooling to maintain. The battery can be wall- or floor-mounted.

Power and Performance

Built with Lithium Iron Phosphate (LiFePO₄) chemistry, the battery is rated for 10,000 cycles at 80% DoD with a 10-year design life. It supports 200A continuous discharge (10.2kW), 157A continuous charge (8kW), and 12.8kW of peak power for 3 seconds, with 95% round-trip efficiency.

Smart Monitoring and Easy Expansion

An integrated smart BMS with active cell balancing protects against over-voltage, under-voltage, over-current, short circuits, and high or low temperatures. Bluetooth and Wi-Fi monitoring through the EG4 app provides real-time status and over-the-air firmware updates. Up to 32 batteries can be connected in parallel, and the battery auto-addresses when paired with compatible EG4 batteries and inverters using closed-loop communication (RS485 / CAN).

Key Features

• 16kWh Nominal Energy / 314Ah Capacity
• 51.2V Nominal Voltage
• 12.86kWh Recommended Usable Energy at 80% DoD
• IP67 All-Weather Enclosure
• Built-In Self-Heating for Cold Climates
• 200A Continuous Discharge / 157A Continuous Charge
• 12.8kW Peak Power (3 Seconds)
• 95% Round-Trip Efficiency
• 10,000-Cycle Life at 80% DoD
• Up to 32 Batteries in Parallel
• Bluetooth & Wi-Fi Monitoring with OTA Updates
• 250A Battery Breaker
• UL 1973 Certified; UL 9540 Listed with EG4 FlexBOSS21 and FlexBOSS18

Specifications

• Chemistry: LiFePO₄ (Lithium Iron Phosphate)
• Nominal Voltage: 51.2VDC
• Capacity: 314Ah / 16kWh
• Recommended Usable Energy: 12.86kWh (80% DoD)
• Recommended Voltage Range: 47.5–56VDC
• Charging Voltage: 56–57VDC
• Discharge Cut-Off Voltage: 44.8VDC
• Max Continuous Charge Current: 157A (8kW)
• Max Continuous Discharge Current: 200A (10.2kW)
• Peak Power: 12.8kW for 3 seconds
• Round-Trip Efficiency: 95%
• Battery Breaker: 250A
• Max Parallel Units: 32
• Communication: RS485, CAN, Bluetooth, Wi-Fi
• Enclosure Rating: IP67
• Operating Temperature: 32°F to 122°F (0°C to 50°C) charging; -4°F to 131°F (-20°C to 55°C) discharging
• Humidity: 5%–95% RH, non-condensing
• Max Altitude: 9,843 ft (3,000 m)
• Cooling: Natural convection
• Mounting: Wall or floor
• Dimensions (H x W x D): 34.6 x 21.7 x 9.3 in
• Weight: 309 lbs
• Cycle Life: 10,000 cycles at 80% DoD, 25°C
• Certifications: UL 1973; UL 9540 (with EG4 FlexBOSS21 / FlexBOSS18)

10-Year EG4 Manufacturer Warranty

The EG4 WallMount All-Weather Battery is backed by a 10-year EG4 manufacturer warranty or 10,000 cycles.

Manuals and Resources

• Spec Sheet
• User Manual