Everything You Need, Included
Everything in the box
1× 48V WallMount 314Ah All-Weather Battery 
1× EG4 All Weather Conduit Box
1× EG4 18kPV All-in-One Hybrid Solar Inverter- U.S. Support
- LiFePO₄ Safety
314Ah 16kWh WallMount AllWeather Battery + 18 KPV/12kW AC | Split-Phase | 4-MPPT | Remote Wi-Fi Monitoring | ESS System
SKU# K0298
Choose Your Inverter Option*
Converts battery power to usable electricity.
Choose Your Battery Option*
Stores your energy for when you need it.
Choose Your Inverter Option*
Converts battery power to usable electricity.
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EG4 6000XP (8kPV) OFF-GRID INVERTER
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Victron MultiPlus-II 48/5000/70-95 120V
Victron MultiPlus-II 48/3000/35-50 120V (UL 1741)
EG4 18kPV All-in-One Hybrid Solar Inverter
EG4 FlexBOSS18 Hybrid Solar Inverter
EG4 FlexBOSS21 Hybrid Solar Inverter
NoneI already have an inverter
BigBattery APEX-6.5K Off-Grid InverterEG4 6000XP (8kPV) OFF-GRID INVERTEREG4 12000XP V2 OFF-GRID INVERTERVictron MultiPlus-II 48/5000/70-95 120VVictron MultiPlus-II 48/3000/35-50 120V (UL 1741)EG4 18kPV All-in-One Hybrid Solar InverterEG4 FlexBOSS18 Hybrid Solar InverterEG4 FlexBOSS21 Hybrid Solar InverterNoneI already have an inverter Choose Your Battery Option*
Stores your energy for when you need it.
Choose Your ESS Configuration*
Compare the available system sizes and choose the configuration that fits your power needs.
$7,914.97
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Documents & Certifications
Battery
About this item
The EG4 314Ah All-Weather Battery + EG4 18kPV ESS System is a high-capacity, rugged energy solution designed for both on-grid and off-grid applications. Combining the 16kWh EG4 WallMount All-Weather LiFePO₄ battery with the powerful EG4 18kPV hybrid inverter, this system delivers reliable, scalable energy for residential, commercial, and backup power needs.
The EG4 18kPV provides up to 12,000W split-phase output at 240V with 18,000W of maximum utilized solar power, a recommended maximum solar input of 21,000W, and three MPPTs. This enables strong solar production and seamless power management between solar, battery, generator, and the utility grid. Paired with the 314Ah All-Weather battery—featuring 200A continuous output, 8,000+ cycle life, and a next-generation smart BMS with active cell balancing—this system ensures stable, efficient energy delivery over the long term.
Built for outdoor installations, the battery features a durable IP67-rated enclosure, integrated self-heating for cold climates, and Bluetooth + Wi-Fi connectivity for real-time monitoring and OTA updates. The outdoor-rated EG4 18kPV adds a 200A AC bypass, closed-loop battery communication, and support for up to 10 inverters in parallel, delivering advanced performance with flexible scalability.
Ships From: Texas, USA
Warranty: 10 Years (Battery), 10 Years (Inverter)
Support: Lifetime USA-Based Tech Support
Compatibility
Integrated & Optimized System:
- EG4 314Ah All-Weather Battery + EG4 18kPV Hybrid Inverter
Expandable & Flexible:
- Compatible with existing EG4 280Ah form factor systems
- Scalable energy storage for growing system needs
- Supports grid-tied, hybrid, and off-grid installations
- Supports up to 10 EG4 18kPV inverters in parallel
Key Features
- Complete ESS SolutionBattery and inverter system designed to work seamlessly together
- 12,000W Split-Phase OutputDelivers 12,000W at 240V or 10,400W at 208V
- 18,000W Utilized Solar PowerSupports up to 21,000W of recommended solar input across three MPPTs
- 200A AC BypassSupports large household loads and whole-home backup configurations
- 16kWh LiFePO₄ Battery (314Ah)High-capacity, durable energy storage
- 200A Continuous Battery OutputSupports high-demand loads
- IP67 Outdoor-Rated BatteryBuilt to withstand dust, water, and harsh environments
- 8,000+ Cycle LifeLong-lasting performance at 80% DoD
- Advanced Smart BMSActive cell balancing for improved efficiency and lifespan
- Self-Heating FunctionReliable battery operation in cold climates
- Bluetooth & Wi-Fi MonitoringReal-time battery tracking and OTA firmware updates
- Closed-Loop CommunicationSeamless coordination between the EG4 battery and inverter
- Three MPPT InputsIndependent solar tracking improves array flexibility and production
- Outdoor-Rated InverterNEMA 4X construction supports protected outdoor installations
- Maintenance-Free OperationNo routine servicing required
A high-capacity, all-weather energy storage system built for durability, flexibility, and long-term energy independence.
Battery Downloads
Battery Specifications
Product Type:LFP Battery
Battery Type:Lithium Iron Phosphate (LFP)
Model Number:WM48314AWXX (XX is a number between 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:8/10.2 kW
Recommended Charging/Discharging Rate:0.5C
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 (BMS):Integrated, Active Balancing
Communication Protocols:RS485, CAN
Battery Breaker:250A
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):34.6 in. × 21.7 in. × 9.3 in. (880 mm × 550 mm × 235 mm)
Operating Temperature Range:Charge: 32 – 122°F (0 – 50°C); Discharging: -4 – 131°F (-20 – 55°C)
Recommended DOD Setting Note*:EG4 recommends this value be set no lower than 20% to maintain the recommended 80% Depth of Discharge.
Storage Temperature Note**:Less than 3 months of storage. If longer than 3 months, recommended storage temperature will be 59°F – 86°F (15°C – 30°C).
Weight:309 lbs. (140 kg)
Enclosure Rating:IP67
Mounting Options:Wall attatched/Floor mount
Display/Indicators:LED Status
Connector Type:Degson quick connector/screw terminal
UL 1973:Pending
UL 9540:Pending
UL 9540A:Pending
UN 38.3:Pending
Cycle Life (70% EOL Capacity):10000 cycles @ 0.5C, 25°C, 80% DOD
Design Life*:15 years
Warranty:10 years or 10000 cycles
Application Type:Residential/Commercial/Off-grid/Backup
Lifetime Energy Throughput:122.2MWh
Note:Information subject to change without notice.
Inverter Downloads
SKU#:INV024
Spec Sheet:
DOWNLOAD
DOWNLOADUser Manual:DOWNLOAD
DOWNLOADUL 1741 Certificate:DOWNLOAD
DOWNLOADUL 1741 CRD PCS Test Verification Of Conformity Security:DOWNLOAD
DOWNLOADRapid Shut Down Wiring Guide:DOWNLOAD
DOWNLOADWhitepapers, Firmware, & Wiring Diagrams:
GO TO LINK
GO TO LINKCEC Listing – EG4 18kPv:GO TO LINK
GO TO LINKInverter Specifications
AC Voltage:120V AC / 240V AC
AC Frequency:50 Hz / 60 Hz
Nominal Voltage:51.2V
Max. Continuous AC Current:50A @ 240V AC
Max. AC Input Power:12000W
Max. AC Bypass:200A
Operating Voltage Range:180 – 270V AC
Output Voltage:120V AC / 240V AC
Max. Continuous Output Current:50A
Output Power:12000W
BMS Cutoff Range:42 – 47V
Surge Capacity (with PV):14700W (10 min) / 15500W (5 min)
Surge Capacity (without PV):13500W (10 min)
Max. Continuous Line Wattage:6000W
Power Factor:0.99 (Full Load)
Reactive Power Adjustment Range:0.8 ~ 0.8 Leading Adjustable
Total Harmonic Distortion:<5% (Full Load)
Transfer Time:10 – 20 ms (Single) / 20 ms (Parallel)
Max. Continuous Output Current:50A
AC Bypass (Generator):90A
Output Voltage:120V AC / 240V AC
Output Power:12000W
Max. Continuous Line Wattage:8000W (per 120V)
Operating Voltage Range:180 – 270V AC
Output Frequency:50 Hz / 60 Hz
Max. Output Power (with PV):14700W (10 min) / 15500W (5 min)
Max. Output Power (without PV):13500W (10 min)
Total Harmonic Distortion Voltage:<5%
Switching Time:10 ms
No. of MPPTs:3
Inputs per MPPT:2 (MPPT 1) / 1 (MPPT 2 & 3)
Max. Input Current:25A (MPPT 1) / 15A (MPPT 2 & 3)
Max. Short Circuit Input Current:31A (MPPT 1) / 19A (MPPT 2 & 3)
DC Input Voltage Range:100 – 600V DC
Start Up Voltage:100V DC
MPPT Operating Voltage Range:140 – 500V DC
MPPT Voltage:360V DC
Max. PV Array Power:18000W
Max. Efficiency:94 – 99.9%
Idle Consumption:~70W (Normal) / ~18W (Standby Mode)
Nominal Voltage:48V DC
Voltage Range:40 – 60V DC
Max. Charge / Discharge Current:250A
Recc. Battery Capacity per Inverter:
Operating / Storage Temperature Range:-13ºF – 140ºF (-25ºC – 60ºC)
Altitude:<6,561 ft (2000 m)
Relative Humidity:0 – 100%
Typical Noise Emission:68 dB @ 3 ft
Protection Rating:IP65 / NEMA 4X
Communications:RS485 / CANBus / WiFi
Max. Parallel Connections:10
Weight:121 lbs (55 kg)
Depth:11.2 in (285 mm)
Width:20.5 in (520 mm)
Height:34.3 in (871 mm)
Battery Downloads
Battery Specifications
Product Type:LFP Battery
Battery Type:Lithium Iron Phosphate (LFP)
Model Number:WM48314AWXX (XX is a number between 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:8/10.2 kW
Recommended Charging/Discharging Rate:0.5C
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 (BMS):Integrated, Active Balancing
Communication Protocols:RS485, CAN
Battery Breaker:250A
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):34.6 in. × 21.7 in. × 9.3 in. (880 mm × 550 mm × 235 mm)
Operating Temperature Range:Charge: 32 – 122°F (0 – 50°C); Discharging: -4 – 131°F (-20 – 55°C)
Recommended DOD Setting Note*:EG4 recommends this value be set no lower than 20% to maintain the recommended 80% Depth of Discharge.
Storage Temperature Note**:Less than 3 months of storage. If longer than 3 months, recommended storage temperature will be 59°F – 86°F (15°C – 30°C).
Weight:309 lbs. (140 kg)
Enclosure Rating:IP67
Mounting Options:Wall attatched/Floor mount
Display/Indicators:LED Status
Connector Type:Degson quick connector/screw terminal
UL 1973:Pending
UL 9540:Pending
UL 9540A:Pending
UN 38.3:Pending
Cycle Life (70% EOL Capacity):10000 cycles @ 0.5C, 25°C, 80% DOD
Design Life*:15 years
Warranty:10 years or 10000 cycles
Application Type:Residential/Commercial/Off-grid/Backup
Lifetime Energy Throughput:122.2MWh
Note:Information subject to change without notice.
Inverter Downloads
SKU#:INV024
Spec Sheet:DOWNLOAD
DOWNLOADUser Manual:DOWNLOAD
DOWNLOADUL 1741 Certificate:DOWNLOAD
DOWNLOADUL 1741 CRD PCS Test Verification Of Conformity Security:DOWNLOAD
DOWNLOADRapid Shut Down Wiring Guide:DOWNLOAD
DOWNLOADWhitepapers, Firmware, & Wiring Diagrams:GO TO LINK
GO TO LINKCEC Listing – EG4 18kPv:GO TO LINK
GO TO LINKInverter Specifications
AC Voltage:120V AC / 240V AC
AC Frequency:50 Hz / 60 Hz
Nominal Voltage:51.2V
Max. Continuous AC Current:50A @ 240V AC
Max. AC Input Power:12000W
Max. AC Bypass:200A
Operating Voltage Range:180 – 270V AC
Output Voltage:120V AC / 240V AC
Max. Continuous Output Current:50A
Output Power:12000W
BMS Cutoff Range:42 – 47V
Surge Capacity (with PV):14700W (10 min) / 15500W (5 min)
Surge Capacity (without PV):13500W (10 min)
Max. Continuous Line Wattage:6000W
Power Factor:0.99 (Full Load)
Reactive Power Adjustment Range:0.8 ~ 0.8 Leading Adjustable
Total Harmonic Distortion:<5% (Full Load)
Transfer Time:10 – 20 ms (Single) / 20 ms (Parallel)
Max. Continuous Output Current:50A
AC Bypass (Generator):90A
Output Voltage:120V AC / 240V AC
Output Power:12000W
Max. Continuous Line Wattage:8000W (per 120V)
Operating Voltage Range:180 – 270V AC
Output Frequency:50 Hz / 60 Hz
Max. Output Power (with PV):14700W (10 min) / 15500W (5 min)
Max. Output Power (without PV):13500W (10 min)
Total Harmonic Distortion Voltage:<5%
Switching Time:10 ms
No. of MPPTs:3
Inputs per MPPT:2 (MPPT 1) / 1 (MPPT 2 & 3)
Max. Input Current:25A (MPPT 1) / 15A (MPPT 2 & 3)
Max. Short Circuit Input Current:31A (MPPT 1) / 19A (MPPT 2 & 3)
DC Input Voltage Range:100 – 600V DC
Start Up Voltage:100V DC
MPPT Operating Voltage Range:140 – 500V DC
MPPT Voltage:360V DC
Max. PV Array Power:18000W
Max. Efficiency:94 – 99.9%
Idle Consumption:~70W (Normal) / ~18W (Standby Mode)
Nominal Voltage:48V DC
Voltage Range:40 – 60V DC
Max. Charge / Discharge Current:250A
Recc. Battery Capacity per Inverter:
Operating / Storage Temperature Range:-13ºF – 140ºF (-25ºC – 60ºC)
Altitude:<6,561 ft (2000 m)
Relative Humidity:0 – 100%
Typical Noise Emission:68 dB @ 3 ft
Protection Rating:IP65 / NEMA 4X
Communications:RS485 / CANBus / WiFi
Max. Parallel Connections:10
Weight:121 lbs (55 kg)
Depth:11.2 in (285 mm)
Width:20.5 in (520 mm)
Height:34.3 in (871 mm)
×
314Ah 16kWh WallMount AllWeather Battery + 18 KPV/12kW AC | Split-Phase | 4-MPPT | Remote Wi-Fi Monitoring | ESS System
Price range: $7,914.97 through $36,314.80
