Felicity Solar FLA48100UG1 5.12kWh battery module5.12kWh 51.2V LiFePO4 module for stack, rack or wall mounting

Overview

FLA48100UG1 is a 5.12kWh, 51.2V LiFePO4 module that fits three installation styles: stacked, in a 3U 19-inch rack or on a wall. At 575×483×133mm and 43kg it is easy to handle, and up to 32 modules can be paralleled for 163.84kWh. It delivers 50A recommended and 100A continuous current, about 5kW, with 125A for 15s. Certificates for IEC 62619, CB and CE-EMC are published, and the datasheet states a 7-year warranty.

• 5.12kWh, 51.2V, 100Ah LiFePO4
• Stack, 3U 19-inch rack or wall mounting
• Up to 32 modules in parallel, 163.84kWh
• 100A continuous, 125A for 15s
• Over-voltage trip protection and fire protection module
• IEC 62619, CB and CE-EMC certificates published

How it works

FLA48100UG1 is a compact 51.2V LiFePO4 module of 5.12kWh with its own BMS, DC breaker and externally replaceable fuse. Each module works as an independent battery connected in parallel with the others, so a system grows in 5.12kWh steps while staying at 51.2V. LEDs show the state of charge, and the BMS cuts charge or discharge on over- and undervoltage, overcurrent and temperature faults.

Modules are linked with short 25mm² power cables rated 120A and a ground wire, both supplied, while communication between modules runs over a black parallel cable. Felicitysolar recommends a battery combiner box or copper busbar when several modules are paralleled, and series connection is not allowed.

Key features

The recommended charge and discharge current is 50A, with 100A continuous and 125A for 15s; continuous power is 5,000W and peak power 6,250W. The datasheet gives at least 6,000 cycles at 90% depth of discharge and 25°C, a maximum 1C rate, over-voltage trip protection and a fire protection module. Up to 32 modules can be paralleled for 163.84kWh. The datasheet notes the product was in pilot production when published.

Installation and compatibility

Three mounting options are described in the manual: stacking with optional module brackets, wall mounting with optional brackets, or rack mounting in a 3U 19-inch cabinet purchased separately. The module measures 575×483×133mm and weighs 43kg; it is rated IP21 for indoor use, away from direct sun and corrosive gases, below 2000m. The power cables to the inverter are not included and must be sourced by the installer.

A grey RS485 cable for Felicitysolar inverters and a blue cable for other brands are supplied. Felicitysolar publishes CAN communication guides for its low-voltage batteries with Victron, SolaX, Solis, SOFAR, Luxpower, Megarevo and Sol-Ark inverters. The system must be grounded through the PE terminal with an earth resistance below 1Ω.

Monitoring and settings

Battery data are passed to the inverter over CAN or RS485, so a Felicitysolar hybrid inverter displays them directly and forwards them to the Fsolar cloud platform. Module addresses for parallel systems are set before start-up, and the manual includes a fault table read from the LED pattern, covering cell voltage, current, temperature and communication faults. In a parallel system, switching on any one module turns on all the others.

Questions and answers