Batteriespeicher Pylontech Fidus 5,12 kWh, 51,2 V LiFePO4, mit Heizung, FB-L-5.12-EU-Pro

Pylontech Fidus FB-L-5.12-EU-Pro - self-heating LiFePO4 battery, 5.12 kWh, 51.2 V

Pylontech Fidus FB-L-5.12-EU-Pro is a low-voltage LiFePO4 battery (51.2 V, 5.12 kWh) with automatic cell heating, for residential energy storage. It can be mounted on a wall, on the floor or in a rack, communicates over CAN or RS485 and has ingress protection IP65.

Main features:

• Nominal energy: 5.12 kWh (4.86 kWh usable)
• Nominal voltage: 51.2 V
• Continuous current: 100 A charge and discharge
• Heating: automatic, from -20 °C
• Communication: CAN, RS485
• Ingress protection: IP65
• Weight: 45 kg

The maximum continuous charge and discharge current is 100 A, and the peak current is 103-120 A for 2 minutes and 121-200 A for 15 seconds. One group can have up to 20 batteries (19 in multi-group setups) and the system up to 6 groups. For paralleling several groups, the datasheet requires an LV-HUB. The manufacturer states scalability from 5 kWh to 583 kWh (1-114 modules).

The self-heating version (Pro) works between -20 and 55 °C. Heating activates between -20 and -10 °C, and charging and discharging are allowed only above -10 °C; the BMS limits the current at extreme temperatures. The enclosure has ingress protection IP65 and corrosion resistance class C5-M, and the design life is 15 years, with 8000 cycles at 25 °C, 0.5C and 5-95 % SOC. The interfaces include LEDs, Bluetooth and Wi-Fi (optional).

The official Pylontech list of compatible inverters (version 2.46, updated 7 July 2026) has one shared column for familia Fidus (FB-L-5.12), which lists Victron Energy inverters (Multiplus and Quattro 48 V, via Venus OS, CAN communication), Solis (S6-EH1P-L, S6-EH1P-L-PLUS, S6-EH3P-NV-YD-L) and Deye (SUN-SG01LP1, SUN-SG03LP1, SUN-SG04LP1, SUN-SG04LP3 and SUN-SG05LP3 series), among other manufacturers. Firmware V1586 is stated for the Deye SG01LP1 and SG03LP1 series, and firmware 422 with Venus OS V2.15 or newer for Victron. In off-grid use with Victron, a Victron MPPT or another Victron-compatible PV inverter is required.

Technical specifications