FLYFINE · INTEGRATED SOLAR STORAGE

3.5kW All-in-One ESS with 5.12kWh LiFePO4 Battery

The FLYFINE all-in-one energy storage system combines a 3.5kW inverter and a 5.12kWh LiFePO4 battery in one enclosure. It provides 230VAC pure sine wave output for compatible residential solar storage and backup power installations.

With solar PV and AC charging inputs, the system brings inverter and battery functions together for coordinated installation. The built-in battery operates at a nominal voltage of 25.6V. RS485 communication and optional Wi-Fi monitoring support system integration and monitoring.

3.5kW Rated Inverter Output
5.12kWh Rated Battery Energy
230VAC Rated AC Output Voltage
LiFePO4 Battery Chemistry

Key Features

Integrated Inverter and Battery

A 3.5kW inverter and 5.12kWh battery share one enclosure, reducing the number of separate units to position and connect on site.

Pure Sine Wave Output

Provides 230VAC pure sine wave output with 50Hz / 60Hz rated frequency. Match connected loads and starting requirements to the system's electrical limits.

Solar and AC Charging

Supports solar PV and AC charging inputs. The specified maximum PV battery charging current is 100A, while maximum AC battery charging current is 80A.

LiFePO4 Battery and Optional Wi-Fi

Uses Grade A+ lithium iron phosphate cells with 90% depth of discharge listed in the datasheet. Wi-Fi monitoring is available as an optional function.

Inverter and Charging Specifications

3.5kW Integrated Inverter Parameters
Parameter Specification
Rated Output Power 3,500W
Rated AC Output Voltage 230VAC
Output Voltage Regulation 230VAC ±5%
Rated Frequency 50Hz / 60Hz
Output Waveform Pure sine wave
Maximum Efficiency 93%
Switchover Time 10ms (PC mode) / 20ms (Home mode)
Rated AC Input Voltage 230V
AC Input Voltage Range 110–280VAC (Home) / 170–280VAC (PC)
AC Input Frequency 50Hz / 60Hz adaptive
AC Input Frequency Range 40–70Hz
Maximum Inverter Charging Current 100A
Maximum AC Battery Charging Current 80A
Maximum PV Battery Charging Current 100A
Optional Monitoring Wi-Fi

PV input limits must be confirmed for the supplied inverter configuration before selecting solar modules or designing the PV string.

Battery Specifications

Built-in 5.12kWh LiFePO4 Battery
Parameter Specification
Battery Chemistry Lithium Iron Phosphate (LiFePO4)
Rated Energy 5.12kWh
Nominal Voltage 25.6V
Battery Voltage Range 21.6–28.8V
Standard Charge Current 100A at 25°C
Maximum Battery Charge Current 150A at 25°C
Maximum Battery Discharge Current 150A at 25°C
Depth of Discharge 90%
Communication RS485
Cycle Life* ≥6,500 cycles
Charging Temperature 0°C to 55°C
Discharging Temperature −20°C to 55°C

*Cycle-life test conditions: 25 ± 2°C, 0.5C charge / 0.5C discharge, with an 80% end-of-life capacity threshold. Battery current limits are separate from inverter charging and AC output limits. Specifications are subject to change; confirm the final configuration when ordering.

Applications

Residential Solar Storage

Store energy from a compatible solar installation for later use. Select the PV array and operating settings according to the supplied inverter's input limits and project requirements.

Backup Power for Selected Loads

Supply selected household loads through the integrated inverter. Check continuous demand and starting loads against the system ratings. Backup duration depends on usable battery energy and connected appliances.

System Selection and Installation

  • Check AC requirements: Confirm that the 230VAC output and selected frequency match the intended installation.
  • Confirm PV configuration: Verify maximum PV input voltage, operating voltage range and permitted array power before connecting solar modules.
  • Size connected loads: Check continuous power and starting requirements. Rated inverter output is 3.5kW.
  • Confirm charging settings: AC, PV and battery charging limits must be considered together when configuring the system.
  • Specify monitoring: Request the optional Wi-Fi function if required for your project.
  • Plan the installation: Confirm site conditions, clearances, protective equipment and wiring requirements with the supplier and installer.

Frequently Asked Questions

What do 3.5kW and 5.12kWh mean?

3.5kW is the rated inverter output power. 5.12kWh is the battery's rated stored energy. Power determines the load the inverter can supply, while energy helps determine how long the battery can supply it.

Is an additional inverter required?

The system includes a 3.5kW inverter and a 5.12kWh LiFePO4 battery in one enclosure. Other installation components depend on the project and electrical design.

How long can the battery provide backup power?

Backup duration depends on connected loads, discharge settings, battery condition and inverter losses. Rated battery energy is 5.12kWh, with 90% depth of discharge listed in the datasheet.

Can it be charged from solar panels and AC power?

The system has PV and AC charging inputs. Confirm the supported charging modes and PV input limits for the supplied configuration before installation.

Does it include Wi-Fi monitoring?

Wi-Fi is optional. Specify the monitoring function you require when requesting a quotation.

Request a 3.5kW All-in-One ESS Quote

Send FLYFINE your required quantity, destination market, load requirements, planned PV array and monitoring preferences. Our team can confirm the suitable configuration and provide a quotation for your project.