Felicity Solar FLH48100UG2 51.2V 5.12kWh LiFePO4 Battery

The FLH48100UG2 is a single 51.2V, 5.12kWh LiFePO4 battery module from Felicity Solar. Five to seventeen of them wired in series build a 25.6kWh to 87.04kWh system.

System Nominal Energy (Min-Max): 25.6-87.04 kWh
System Nominal Voltage (Min-Max): 256-870.4 V
Cycle Life: ≥6000 Cycles

15,360 AEDincl. VAT

In stock

Full Specifications Download datasheet (PDF)

Felicity Solar FLH48100UG2 51.2V 5.12kWh LiFePO4 Battery features

One module is 51.2V nominal and 5.12kWh of LiFePO4 storage.

Series stacking from 5 to 17 modules, for a system of 25.6kWh to 87.04kWh.

90% depth of discharge, applied to whichever stack size is built.

A smart BMS with breaker and fuse is built into each of the 5 to 17 modules.

RS485 communication interface for reporting the stack to the inverter.

Multi-level rack mounting, with an operating range of -20°C to 55°C.

About the Felicity Solar FLH48100UG2 51.2V 5.12kWh LiFePO4 Battery

The Felicity Solar FLH48100UG2 is a rack-mounted LiFePO4 battery module rated 51.2V and 5.12kWh. It is not sold as a fixed-size system: five to seventeen modules are wired in series, so a finished stack stores between 25.6kWh and 87.04kWh, with 90% of that energy usable on discharge. Those are two different numbers and it is worth keeping them apart. 5.12kWh describes one module; the 25.6-87.04kWh range describes the cluster it belongs to, and both the stored energy and the stack voltage rise with every module added, because the modules sit in series rather than in parallel. Each module carries its own smart BMS with a breaker and a fuse, and reports over an RS485 communication interface. Multi-level rack options let the same modules go in as a compact tower or a wider frame, and the operating temperature range is -20°C to 55°C. We supply the FLH48100UG2 as an authorised Felicity Solar distributor, with price, availability and delivery set per market.

Specifications last updated 23 July 2026

Felicity Solar FLH48100UG2 51.2V 5.12kWh LiFePO4 Battery full specifications

Electrical

Battery Designation	IFPP/54/150/120/[(1P16S) NS] M/-20+50/95
Depth of Discharge (DoD)	90 %
Max. Continuous Charge/Discharge Current	100A
Rated DC Power	40.96kWh 61.44kWh
Recommend Charge/Discharge Power	50A
Battery Type	LiFePO4
Communication Port	RS485 / CAN
Cycle Life	≥ 6000 Cycles
Display Type	LED+LCD
Nominal Capacity	100Ah
Nominal Energy	5.12kWh
Nominal Voltage	51.2V
Number of Battery Modules	5(Min) 12 17(Max)"
System Energy	25.6 – 87.04 kWh (5–16 modules)
System Nominal Voltage	256 – 870.4 V (5–16 modules)
System Operating Voltage	232~288V 371.2~460.8V 556.8~691.2V 788.8~979.2V
System Usable Energy	25.6 – 87.04 kWh (5–16 modules)
Module Nominal Energy	5.12 kWh
Module Nominal Voltage	51.2 V
Module Nominal Capacity	100 Ah
Recommended Charge/Discharge Current	50 A
Max Continuous Charge/Discharge Current	100 A

Mechanical

Installation	Rack-Mounting
Package Dimension	687x562x250MM
Control Module Dimensions	482.6 x 565 x 150 mm
Control Module Weight	10.3 kg
Battery Module Dimensions	482.6 x 565 x 133 mm
Battery Module Weight	41.3 kg
13-Floor Rack Weight	49 kg
9-Floor Rack Weight	37.7 kg
IP Rating of Enclosure	IP21
Protection	Built-in Smart BMS, Breaker, Fuse

Environmental

Storge Temperature Range	0°C~+35°C
Working Temperature Range	Charge:0°C~+55°C
Altitude	≤2000M
Humidity	5%~95%
Working Temperature (Charge)	0°C to +55°C
Working Temperature (Discharge)	-20°C to +55°C
Storage Temperature	0°C to +35°C
Certification	CE / IEC 62619 / UN38.3
Warranty	10 Years
Operating Temperature	-20°C to 55°C

Certifications

Frequently Asked Questions

Between 5 and 17 modules are wired in series. Five modules give a 25.6kWh system and seventeen give 87.04kWh, with each further module adding its own 5.12kWh to the stack.

No. 5.12kWh at 51.2V is one FLH48100UG2 module. A working system is 5 to 17 of those modules in series, so the installed energy is 25.6kWh to 87.04kWh depending on how many are fitted.

The published depth of discharge is 90%, and it applies to the stack you build rather than to a fixed system size, so 90% of anything between 25.6kWh and 87.04kWh is usable.

Each module has a built-in smart BMS with breaker and fuse and an RS485 communication interface for reporting to the inverter. Multi-level racks suit different spaces, and the operating temperature range is -20°C to 55°C.