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SunWell Energy

20.48kWh 6.2kW All-in-One ESS

20.48kWh 6.2kW All-in-One ESS

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Model

This all-in-one ESS integrates a 20.48kWh LiFePO4 battery with inverter and energy management in one enclosure for turnkey residential storage. It delivers solar self-consumption, overnight backup and intelligent load management while reducing on-site wiring and commissioning time.

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20.48kWh 6.2kW All-in-One ESS — Technical Specifications
MODELSW-THEP-10LV4
Phase1-phase
Max. PV Input Power6500W
Rated Output Power6200W
Max. Solar Charging Current120A
PV Input (DC)
Nominal DC Voltage/ Max. DC Voltage360Vdc/500Vdc
Start-Up Voltage/ Initial Feeding Voltage90Vdc
MPPT Voltage Range60~450Vdc
Number Of MPPT Trackers/ Max. Input Current1/22A
Grid Output (AC)
Nominal Output Voltage220/230/240Vac
Output Voltage Range195.5~253Vac
Nominal Output Current27.0A
Power Factor>0.99
Feed-In Grid Frequency Range49~51±1Hz
Battery Data
Rated Voltage51.2Vdc
Cell Combination16S1P*4
Rated Capacity400Ah
Energy Storage20.48kWh
Discharge Cut-Off Voltage43.2Vdc
Charge Cut-Off Voltage58.4Vdc
Efficiency
Max. Conversion Efficiency98%
Two Load Output Power
Full Load6200W
Max. Main Load6200W
Max. Second Load (Battery Mode)2067W
Main Load Cut Off Voltage44Vdc
Main Load Return Voltage52Vdc
AC Input
AC Start-Up Voltage/ Auto Restart Voltage120-140VAC/180Vac
Acceptable Input Voltage Range90-280VAC or 170-280Vac
Max. AC Input Current50A
Nominal Input Frequency50/60Hz
Surge Power10000W
Battery Mode Output (AC)
Nominal Output Voltage220/230/240Vac
WaveformPure sine wave
Efficiency (DC To AC)94%
Charger
Max. Charging Current (Solar To AC)120A
Max. AC Charging Current100A
Physical
Dimension D×W×H192×640×1860mm
Net Weight211kg
Interface
CommunicationRS232, WIFI/GPRS, Lithium Battery

Features

  • Integrated battery, inverter and energy management in one pre-configured enclosure for simplified deployment.
  • 20.48kWh of LiFePO4 storage delivers reliable solar self-consumption and overnight backup for homes.
  • Floor-mounted design with minimal footprint fits utility rooms, garages and sheltered indoor spaces.
  • Intelligent energy management enables time-of-use scheduling, solar optimization and automatic backup switching.
  • Built-in WiFi / GPRS / App provides real-time system status and performance data.
  • Multi-layer protection covers battery, inverter and grid connection for safe residential operation.

Applications

  • Residential solar self-consumption: Maximizes PV utilization by storing daytime generation for evening use.
  • Home backup power: Provides automatic backup during grid outages for essential household circuits.
  • Time-of-use optimization: Reduces electricity bills by shifting load to off-peak hours.
  • New solar installation: Simplifies system design with a single integrated unit instead of separate components.
  • Retrofit storage addition: Adds battery storage to existing solar arrays with minimal system modification.
  • Remote home power: Delivers reliable off-grid or weak-grid energy supply for rural properties.

Integrated Architecture

The unit combines battery storage, inverter and energy management into a single pre-configured enclosure, eliminating separate component sourcing and compatibility testing. With 20.48kWh of built-in LiFePO4, it delivers turnkey residential storage that reduces installer deployment time and project complexity.

Intelligent EMS

An intelligent energy management system dynamically routes power between solar PV, battery, grid and loads based on real-time conditions. It supports time-of-use scheduling, self-consumption optimization and seamless grid-to-backup switching, all managed through a single WIFI / GPRS / APP interface.

Warranty

LiFePO4 batteries for 5 years, hybrid inverters for 2 years, and solar panels under the supplier policy of a 10-year product warranty plus 30-year linear power warranty. If you experience any quality issues within the applicable warranty period, please contact us and we will arrange a replacement or repair promptly.

Frequently Asked Questions

What system configuration does this 20.48kWh all-in-one ESS support?

The unit integrates battery, inverter and energy management in a single enclosure, providing 20.48kWh of storage with solar PV input and grid or off-grid operation. Contact our team with your site requirements for a tailored configuration.

Can I expand the system storage capacity later?

Yes. The unit supports battery expansion to increase total storage as your energy needs grow. Our technical team can advise on compatible expansion modules and configuration limits for your specific setup.

What monitoring and communication does the system offer?

The unit works with RS232 / WIFI / GPRS / Lithium Battery communication and provides real-time status through its WIFI / GPRS / APP interface, so you can track SOC, power flow and alerts on-site or remotely. Contact our team for integration options with your monitoring platform.

What warranty and after-sales support comes with the system?

The product is backed by a 5-year warranty. If you experience any quality issues within the warranty period, contact us and we will arrange a replacement or repair promptly. Our technical team also assists with configuration and troubleshooting.

Expert Support

Our team of solar energy experts is ready to help you find the perfect solution for your needs.

Fast Response

We typically respond to all inquiries within 24 hours during business days.

Custom Solutions

Every project is unique. Let us design a solar solution tailored to your specific requirements.