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EG4 WallMount 314Ah All-Weather Battery + FLEXBOSS18

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K0286

$7,118.97
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EG4 314Ah All-Weather Battery + FlexBOSS18 ESS System | 16kWh LiFePO₄ Battery | 18kW PV Input | Split-Phase Hybrid Inverter

Rugged Hybrid Energy Storage System with 16kWh All-Weather Battery, FlexBOSS18 Inverter & Advanced Solar Energy Management

The EG4 314Ah All-Weather Battery + FlexBOSS18 ESS System is a powerful, high-capacity energy storage solution engineered for residential, light commercial, hybrid, and off-grid applications. Combining the durable 16kWh EG4 WallMount All-Weather LiFePO₄ battery with the advanced FlexBOSS18 hybrid inverter, this integrated system delivers exceptional energy independence, intelligent power management, and reliable backup power. Featuring up to 18,000W of solar input capacity, dual MPPT tracking, 120/240V split-phase output, and seamless closed-loop communication between battery and inverter, the system is designed to maximize solar production while providing long-term, maintenance-free performance in demanding environments.

Key Features:

  • Complete ESS Solution: Fully integrated battery and inverter package designed for seamless installation and optimized performance.
  • 18,000W Solar Input Capacity: Supports large solar arrays for maximum renewable energy production.
  • 120/240V Split-Phase Output: Delivers dependable power for residential homes, workshops, and light commercial applications.
  • 16kWh LiFePO₄ Battery Storage: High-capacity lithium battery provides dependable long-duration energy storage.
  • Dual MPPT Inputs: Optimizes solar harvesting across multiple roof orientations and PV arrays.
  • 200A Continuous Battery Output: Supports whole-home backup, critical loads, and high-demand appliances.
  • IP67 Outdoor-Rated Design: Built to withstand dust, moisture, and harsh environmental conditions.
  • Advanced Smart BMS: Active cell balancing improves efficiency, battery health, and long-term lifespan.
  • Integrated Self-Heating Technology: Ensures reliable charging and operation in cold-weather environments.
  • Bluetooth & Wi-Fi Monitoring: Provides real-time performance data and over-the-air firmware updates.
  • GridBOSS Compatibility: Supports advanced load management, AC coupling, and generator integration.
  • 8,000+ Cycle Life: Engineered for years of reliable service at 80% depth of discharge.

Ideal Applications:

  • Whole-home backup power systems
  • Residential solar energy storage
  • Off-grid homes and remote properties
  • Light commercial energy systems
  • Hybrid solar and battery installations
  • Generator-assisted backup power systems
  • Peak shaving and utility cost reduction

What’s Included:

  • 1 × EG4 314Ah All-Weather LiFePO₄ Battery (16kWh)
  • 1 × EG4 FlexBOSS18 Hybrid Inverter
  • Battery-to-Inverter Communication Components
  • Monitoring & Connectivity Interfaces
  • User Manuals & Installation Documentation

Specifications

Parameter Details
Battery Specifications
Product TypeLFP Battery
Battery TypeLithium Iron Phosphate (LFP)
Model NumberWM48314AWXX (XX = 00–99)
Nominal Energy Capacity16kWh
Usable Energy12.86kWh (80% Recommended DOD)
Voltage Range47.5 – 57.6VDC
Nominal Voltage51.2VDC
Capacity314Ah
Charging Voltage Range56 – 57VDC
Discharging Cut-Off Voltage47.5VDC
Max. Continuous Charge Current157A
Max. Continuous Discharge Current200A
Continuous Charge / Discharge Power8kW / 10.2kW
Recommended Charge / Discharge Rate0.5C
Peak Power12.8kW (3 sec)
Round-Trip Efficiency95%
Max. Parallel Units32
Protection FeaturesOver/Under Voltage, Over-Current, Short Circuit, High/Low Temperature
Battery Management SystemIntegrated BMS with Active Balancing
Communication ProtocolsRS485, CAN
Battery Breaker250A
Battery Environmental Specifications
Operating Temperature RangeCharge: 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 Range5% – 95% RH (Non-Condensing)
Operating Altitude<9,843 ft (<3,000 m)
Cooling MethodNatural Convection
Enclosure RatingIP67
Battery Physical Specifications
Dimensions (H × W × D)34.6 × 21.7 × 9.3 in (880 × 550 × 235 mm)
Weight309 lbs (140 kg)
Mounting OptionsWall Attached / Floor Mount
Display / IndicatorsLED Status
Connector TypeDegson Quick Connector / Screw Terminal
Battery Lifecycle & Certification
Cycle Life (70% EOL Capacity)10,000 Cycles @ 0.5C, 25°C, 80% DOD
Design Life15 Years
Warranty10 Years or 10,000 Cycles
Lifetime Energy Throughput122.2MWh
Application TypeResidential / Commercial / Off-Grid / Backup
UL 1973Pending
UL 9540Pending
UL 9540APending
UN 38.3Pending
Battery Notes
Recommended DOD SettingSet no lower than 20% to maintain the recommended 80% Depth of Discharge.
Storage Temperature NoteFor storage longer than 3 months, recommended temperature is 59°F – 86°F (15°C – 30°C).
NoteSpecifications subject to change without notice.
Inverter AC Specifications
Nominal AC Voltage120/240VAC | 120/208VAC (L1/L2/N required)
Frequency60 Hz (Default) | 50 Hz
Max. AC Current54A @ 240V | 54A @ 208V
Max. AC Input Power13,000W
Max. AC Bypass90A
Operating Voltage Range180 – 270VAC
Output Voltage120/240VAC | 120/208VAC (L1/L2/N required)
Max. Output Current66.7A
Output Frequency60 Hz (Default) | 50 Hz
Nominal Output Power (Without PV)12,000W @ 240V | 12,000W @ 208V
Nominal Output Power (With PV)16,000W @ 240V | 13,800W @ 208V
Power Factor0.99 (Full Load)
Reactive Power Adjustment-0.8 to 0.8 Leading Adjustable
Total Harmonic Distortion<5% (Full Load)
Transfer Time20ms (Default) | 10ms (Configurable) | 20ms (Parallel)
Inverter Output & Surge Specifications
Rated Output Current50A @ 240V | 57.7A @ 208V
Rated Output Power12,000W @ 240VAC | 12,000W @ 208VAC
Peak Power20,000W (0.5 sec) | 15,000W (1 sec)
12,500W (6 min) | 11,000W (12 min)
Operating Frequency60 Hz (Default) | 50 Hz
THD Voltage<5%
Solar MPPT Specifications
Number of MPPTs2
Inputs per MPPT2 (MPPT 1) | 2 (MPPT 2)
Max. Usable Input Current26A (MPPT 1) | 26A (MPPT 2)
Max. Short Circuit Input Current31A (MPPT 1) | 31A (MPPT 2)
DC Input Voltage Range100 – 600VDC
Unit Start-Up Voltage200VDC
MPPT Operating Voltage Range120 – 440VDC
Nominal MPPT Voltage360VDC
Max. Utilized PV Array Power18,000W
Max. Recommended PV Input18,000W
Max. Efficiency97.5% (PV→Grid) | 94.5% (PV→Battery) | 94% (Battery→Grid)
Battery Interface Specifications
Nominal Battery Voltage48VDC
Battery Voltage Range40 – 60VDC
Max. Charge / Discharge Power10,000W
Recommended Battery Capacity>300Ah per Inverter
Idle Consumption<65W
Environmental & Communication
Operating / Storage Temperature-13°F – 140°F (-25°C – 60°C)
Operating Altitude<6,561 ft (<2,000 m)
Relative Humidity0 – 100%
Typical Noise Emission<50dB @ 3 ft
Design TopologyHigh-Frequency / Transformerless
Protection RatingIP65 / NEMA 4X
CommunicationsRS485 / CANBus / WiFi / 4G
Max. Parallel Connections10
Inverter Physical Specifications
Weight115 lbs (52 kg)
Depth11.2 in (287 mm)
Width22.8 in (567 mm)
Height30.5 in (775 mm)

Understanding Your Power Needs

Power Calculation Guide

Sizing Metric Formula & Example
Energy Consumption (Wh) Formula: Watts × Hours
Example: 60W × 4 hrs = 240 Wh
Battery Capacity (Ah) Formula: Watt-hours ÷ System Voltage (V)
Example: 240 Wh ÷ 12V = 20 Ah
Inverter Size (W) Formula: Total Watts × 1.25 (safety margin)
Example: 300W × 1.25 = 375W → Use 400W inverter
Total Load Power (W) Formula: Sum of all appliance watts used simultaneously
Example: Light (10W) + Fan (75W) = 85W
Runtime (hrs) of Battery Formula: (Battery Ah × Voltage) ÷ Total Load (W)
Example: (100Ah × 12V) ÷ 240W = 5 hrs

Find Your Power Match

Need / Application System Recommendation
Basic lighting + phone charging Recommended Battery: 50Ah – 100Ah (12V)
Inverter Size: 100W – 200W
Notes: For small backup setups
Home office (laptop, fan, TV) Recommended Battery: 150Ah – 200Ah (12V or 24V)
Inverter Size: 500W – 1000W
Notes: For moderate usage with 4–6 hours of backup
Home backup (fridge, lights) Recommended Battery: 200Ah+ (24V or 48V recommended)
Inverter Size: 1000W – 1500W
Notes: Ideal for longer backups or heavier loads
Business / shop power backup Recommended Battery: 300Ah+ (48V system)
Inverter Size: 2000W – 3000W
Notes: Suitable for commercial setups or extended power outages

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EG4 WallMount 314Ah All-Weather Battery + FLEXBOSS18

$7,118.97