Felicity Solar FLM500-125/261 261.2kWh Energy Storage System

Solar Battery and Lithium Battery StorageModel

Felicity Solar FLM500-125/261 832V 261.2kWh LiFePO4 Battery

A liquid-cooled 261.2 kWh LiFePO4 system, the FLM500-125/261 delivers 125 kW AC through a 3P4L connection and parallels 6 to 20 units for up to 5224 kWh.

  • Nominal Energy: 261.2 kWh
  • Nominal Capacity: 314 Ah
  • Nominal Voltage: 832 V
  • Cycle Life: ≥8000
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In stock

  • Delivered within 3 business days, door to door, to every market we serve.
  • Dispatched the same business day for an order placed before 21:00 (Dubai time), or the next business day after.
  • 5-year warranty
Full SpecificationsDownload datasheet (PDF)

Felicity Solar FLM500-125/261 832V 261.2kWh LiFePO4 Battery features

  • 261.2 kWh nominal energy from a 1P260S string of LiFePO4 3.2V/314Ah cells rated 314 Ah at 832 V

  • 125 kW AC nominal power on a 3P4L connection at 400 V nominal, 50/60 Hz, across a 360-440 V range

  • Cycle life rated at ≥8000 cycles, with depth of discharge specified at 95% and a 0.5P charge and discharge rate

  • Operating window of 728-936 V, with a 728 V cut-off voltage and a 936 V maximum charging voltage

  • Liquid cooling, IP55 protection and a C4 anti-corrosion grade for -25 to 55 °C service at 0-95% humidity

  • 6 to 20 units in parallel for 1567.2-5224 kWh of system capacity, supervised over RS485 and Ethernet

About the Felicity Solar FLM500-125/261 832V 261.2kWh LiFePO4 Battery

The Felicity Solar FLM500-125/261 is a liquid-cooled LiFePO4 energy storage system rated at 261.2 kWh nominal energy and 125 kW AC nominal power, connected through a 3P4L AC interface at 400 V nominal and 50/60 Hz. Its 1P260S configuration of LiFePO4 3.2V/314Ah cells gives 314 Ah at 832 V nominal. Operating voltage spans 728-936 V, between a 728 V cut-off and a 936 V maximum charging voltage, and the charge and discharge rate is 0.5P. Depth of discharge is specified at 95%, and cycle life is rated at ≥8000 cycles. Maximum system efficiency reaches ≥90%, total harmonic distortion stays under 3% and the DC component under 0.5%, while the power factor is adjustable from -1 to 1 and unbalanced load capacity is 100%. Six to twenty units run in parallel for 1567.2-5224 kWh. Liquid cooling, IP55 protection, a C4 anti-corrosion grade and an aerosol fire extinguishing system with water fire protection, smoke and heat detectors support -25 to 55 °C service at 0-95% humidity, below 2000 m and under 75 dB. The 2670 kg unit reports over RS485 and Ethernet. We are an authorised Felicity Solar distributor, and the FLM500-125/261 ships with a warranty of 5 Years.

Specifications last updated 17 August 2026

Felicity Solar FLM500-125/261 832V 261.2kWh LiFePO4 Battery full specifications

Electrical(25)

AC Connection Type3P4L
AC Nominal Frequency50/60 Hz
AC Nominal Power125 kW
AC Nominal Voltage400 V
AC Voltage Range360-440 V
Battery TypeLiFePO4
Charge/Discharge Rate0.5P
Cut-Off Voltage728 V
Cycle Life≥8000
DC Component<0.5 %
Depth of Discharge95 %
Max Charging Voltage936 V
Max Parallel Units6-20
Max System Capacity1567.2-5224 kWh
Max System Efficiency≥90 %
Nominal Capacity314 Ah
Nominal Energy261.2 kWh
Nominal Voltage832 V
Operating Voltage728-936 V
Power Factor Range-1 to 1
System Nominal Energy261.2 kWh
System Nominal Voltage832 V
System Operating Voltage728-936 V
Total Harmonic Distortion<3 %
Unbalanced Load Capacity100 %

Mechanical(3)

Cell TypeLiFePO4 3.2V/314Ah
CommunicationRS485, Ethernet
System Battery Configuration1P260S

Environmental(9)

Anti-Corrosion GradeC4
Charging Temperature Range-25 to 55 °C
Discharging Temperature Range-25 to 55 °C
Fire Suppression SystemAerosol fire extinguishing equipment, Water fire protection, Smoke detector, Heat detector
Humidity Range0-95 %
Noise Level<75 dB
Operating Altitude<2000 m
Protection DegreeIP55
Temperature Control MethodLiquid cooling

Certifications(7)

  • UN38.3
  • EN 50549
  • IEC 61000
  • IEC 62109
  • IEC 62477
  • IEC 62619
  • IEC 63056

Downloads & support

PDFThe manufacturer's sheet, to print or share

Frequently Asked Questions

How much energy does the FLM500-125/261 store?

261.2 kWh is the nominal energy of the FLM500-125/261, and the same 261.2 kWh is quoted as its system nominal energy. Depth of discharge is specified separately at 95%. Nominal capacity is 314 Ah at 832 V nominal.

What power output does the FLM500-125/261 deliver?

125 kW AC nominal power, delivered on a 3P4L connection at 400 V nominal and 50/60 Hz, over an AC voltage range of 360-440 V. Power factor is adjustable from -1 to 1, total harmonic distortion stays under 3% and unbalanced load capacity is 100%.

How many FLM500-125/261 units can run in parallel?

6 to 20 units run in parallel, for a maximum system capacity of 1567.2-5224 kWh. Each unit runs at 832 V nominal within a 728-936 V operating window, and maximum system efficiency is ≥90%.

How is the FLM500-125/261 protected, and what warranty does it carry?

IP55 protection with a C4 anti-corrosion grade, liquid cooling, and an aerosol fire extinguishing system with water fire protection plus smoke and heat detectors. The 2670 kg unit runs from -25 to 55 °C at 0-95% humidity, below 2000 m and under 75 dB, and ships with a warranty of 5 Years.

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