Felicity Solar FLS48100SG2

Solar Battery and Lithium Battery StorageModel FLS48100SG2

Felicity Solar FLS48100SG2 51.2V 5.12kWh LiFePO4 Battery

A 51.2 V LiFePO4 stack that grows one 5.12 kWh, 100 Ah module at a time to 40.96 kWh across eight modules, managed end to end by an S16 BMS on RS485 or CAN.

  • System Nominal Energy (1-8 packs): 5.12-40.96 kWh
  • System Nominal Voltage: 51.2 V
  • Cycle Life: ≥6000 Cycles
AED 3,626incl. VAT

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.
  • 2-year warranty
Full SpecificationsDownload datasheet (PDF)

Felicity Solar FLS48100SG2 51.2V 5.12kWh LiFePO4 Battery features

  • 5.12 kWh to 40.96 kWh in one stack

    Begin with one 100 Ah, 5.12 kWh module and add up to eight in parallel; the FLS48100SG2 stays at 51.2 V whichever size you build.

  • ≥6000 cycles, with ≥95% depth of discharge

    The LiFePO4 cells are rated for ≥6000 cycles with a depth of discharge of ≥95%, so nearly all of the 40.96 kWh is usable every day.

  • 400 A continuous, 800 A peak for 15 seconds

    Continuous charge/discharge climbs 60, 120, 180, 240, 300, 360, 400 and 400 A as modules are added, with a 15-second peak ladder from 100 A to 800 A.

  • S16 BMS reporting over RS485 or CAN

    The S16 battery management system holds the FLS48100SG2 inside 44.8~57.6 V, floats at 57.6 V and cuts off at 48 V, reporting over RS485 or CAN.

  • IP21 cabinet with breaker, fuse and under-voltage protection

    A built-in smart BMS, breaker and fuse guard the IP21 enclosure, which carries under-voltage protection and runs at 5% ~ 95% relative humidity up to 2000 m.

  • 46 kg modules, 414 kg fully stacked

    Every 600 x 450 x 180 mm module weighs 46 kg and the complete 600 x 1620 x 450 mm FLS48100SG2 weighs 414 kg, wall-mounted or floor-mounted.

About the Felicity Solar FLS48100SG2 51.2V 5.12kWh LiFePO4 Battery

The Felicity Solar FLS48100SG2 is a stackable 51.2 V LiFePO4 battery system that starts at 5.12 kWh with a single 100 Ah module and scales to 40.96 kWh with eight modules in parallel, delivering up to 400 A continuous charge or discharge, an 800 A peak for 15 seconds, and ≥6000 cycles, with depth of discharge rated separately at ≥95%. Each module measures 600 x 450 x 180 mm and weighs 46 kg, so a fully populated FLS48100SG2 stands 600 x 1620 x 450 mm and weighs 414 kg, wall-mounted or floor-mounted as the room allows. The S16 BMS holds the stack inside 44.8~57.6 V, floats at 57.6 V, cuts off at 48 V and reports over RS485 or CAN, while an LCD on the control module and four LEDs on every battery module show status at a glance. A built-in smart BMS, breaker and fuse cover under-voltage and the rest of the protection set. The IP21 enclosure is made for indoor rooms at 5% ~ 95% relative humidity and altitudes up to 2000 m: charge between 0°C and +55°C, discharge from -20°C to +55°C, store between 0°C and +35°C. We are the authorised Felicity Solar distributor for the FLS48100SG2.

Specifications last updated 23 July 2026

Felicity Solar FLS48100SG2 51.2V 5.12kWh LiFePO4 Battery full specifications

Electrical(28)

ElevationOperating environment: Suitable for indoor
Depth of Discharge (DoD)≥95 %
Max. Charging Current60A*N(Max=400A)
Max. Charging Voltage57.6V
Max.continuous charge/Discharge current60A 120A 180A 240A 300A 360A 400A 400A
Overcurrent Protection (A)Over
Peak Charge/Discharge Current(15s)100A 200A 300A 400A 500A 600A 700A 800A
Power/Runningon, press and hold for 3 seconds to turn off; 2. A green light indicates normal status,
Recommend Charge/Discharge Power50A 100A 150A 200A 250A 300A 350A 400A
Battery TypeLiFePO4
Cycle Life≥6000Cycles
Display typeControl Module:LCD/Battery Module:LED*4
Module Nominal Capacity100Ah
Module Nominal Energy5.12KWh
Module Nominal Voltage51.2V
System Nominal Energy5.12 – 40.96 kWh (1–8 modules)
System Nominal Voltage51.2V
System Operating Voltage44.8~57.6V
Number of Battery Modules1-8
Recommended Charge/Discharge Current50 / 100 / 150 / 200 / 250 / 300 / 350 / 400 A
Max Continuous Charge/Discharge Current60 / 120 / 180 / 240 / 300 / 360 / 400 / 400 A
Peak Charge/Discharge Current (15s)100 / 200 / 300 / 400 / 500 / 600 / 700 / 800 A
ScalabilityMax 8 packs in parallel (40.96 kWh)
CommunicationRS485 / CAN
Max Charging Voltage57.6 V
Floating Charging Voltage57.6 V
Cut-off Voltage48 V
BMS VersionS16

Environmental(12)

Relative humidity:5% ~ 95%
Storage temperature:0°C~+35°C
Storge Temperature Range0°C~+35°C
Working Temperature RangeDischarge:-20°C~+55 °C
Working temperature:-20°C~+55°C
Altitude≤2000m
Humidity5%~95%
Working Temperature (Charge)0°C to +55°C
Working Temperature (Discharge)-20°C to +55°C
Warranty10 Years
Over Voltage ProtectionBuilt-in smart BMS, Breaker, Fuse
Under Voltage ProtectionYes

Mechanical(8)

InstallationWall-Mounted / Floor-Mounted
Package Dimension712x562x298mm
Control Module Weight46 kg
Control Module Dimensions600 x 450 x 180 mm
Battery Module Weight46 kg
Battery Module Dimensions600 x 450 x 180 mm
Protection LevelIP21
ProtectionBuilt-in smart BMS, Breaker, Fuse

Certifications(2)

  • CE
  • ISO9001

Downloads & support

PDFThe manufacturer's sheet, to print or share

Troubleshooting & error codes

Looking up an error code on this FelicityESS FLS48100SG2? Browse the full list of codes for this device, with the cause and recommended fix for each.

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Frequently Asked Questions

How much energy does the FLS48100SG2 store?

5.12 kWh to 40.96 kWh. One 100 Ah module holds 5.12 kWh at 51.2 V, and the FLS48100SG2 takes up to eight modules in parallel for 40.96 kWh. Because the depth of discharge is ≥95%, almost all of that energy is usable.

What charge and discharge current does the FLS48100SG2 support?

400 A maximum. Charging runs at 60 A per module up to a 400 A ceiling, and the continuous charge/discharge ladder is 60, 120, 180, 240, 300, 360, 400 and 400 A as modules are added, with a 15-second peak of 100 A to 800 A.

What are the dimensions and weight of the FLS48100SG2?

600 x 1620 x 450 mm and 414 kg for the complete stack. Each battery module and the control module measure 600 x 450 x 180 mm and weigh 46 kg, and the package measures 712x562x298mm. Wall-mounted and floor-mounted installation are both supported.

Where can the FLS48100SG2 be installed?

0°C to +55°C for charging and -20°C to +55°C for discharging. The IP21 enclosure suits indoor rooms at 5% ~ 95% relative humidity and altitudes of ≤2000m, and the FLS48100SG2 should be stored between 0°C and +35°C.

Customer reviews

5.0★★★★★Based on 1 review
  • ★★★★★One of the best batteries i used

    I really like this battery, i have sued it for so long and it is really great

    Haj