Pylontech Fidus Pro 5.12kWh LiFePO4 Battery, IP65 Self-Heating
- 5.12kWh nominal capacity with 4.86kWh usable energy at 95% depth of discharge.
- Self-heating version supports operation from -20°C to +55°C, with charging and discharging permitted above -10°C.
- IP65 enclosure and C5-M anti-corrosion rating for robust low-voltage battery storage in demanding locations.
Outdoor-ready 48V battery storage with cold-weather support
The Pylontech Fidus Pro FB-L-5.12-EU-Pro is a 51.2V LiFePO4 battery for low-voltage hybrid solar, backup and off-grid energy-storage systems. Its integrated self-heating function is designed to support use in low-temperature environments, while the IP65-rated enclosure offers protection suited to appropriately selected outdoor and challenging installation locations.
Each battery provides 5.12kWh nominal capacity and 4.86kWh usable capacity. CAN and RS485 communications allow integration with compatible inverter systems, subject to confirmation of the inverter’s approved battery protocol and system design.
Key features
- Self-heating version with a stated operating temperature range of -20°C to +55°C.
- 100A maximum continuous charge current and 100A maximum continuous discharge current.
- Peak charge/discharge current of 103–120A for two minutes, or 121–200A for 15 seconds.
- Up to 20 batteries per battery group and up to six strings, with an LV-HUB-V2 required for multi-group parallel connection.
- LED indication as standard, with Bluetooth and Wi-Fi listed as optional.
Where to use the Pylontech Fidus Pro battery
The Pylontech Fidus Pro 5.12kWh battery can be used in compatible 48V solar and battery systems for commercial premises, agricultural buildings, workshops, mobile or remote power applications, and off-grid or backup installations. It is particularly relevant where low ambient temperatures make a self-heating battery configuration beneficial.
This is not a plug-and-play product. A complete installation must include compatible inverter communications, correctly rated DC cabling and protection, battery isolation, suitable mounting and system commissioning. UK expert support is available, and Energian can help arrange installation through trusted partners where required.
Technical specifications
| Model | FB-L-5.12-EU-Pro |
| Battery chemistry | LiFePO4 |
| Nominal voltage | 51.2VDC |
| Nominal capacity | 5.12kWh |
| Usable capacity | 4.86kWh |
| Depth of discharge | 95% |
| Dimensions (W × D × H) | 630×170×363 mm |
| Weight | 45kg |
| Discharge voltage | 42.5–56.8VDC |
| Charge voltage | 56–56.8VDC |
| Maximum continuous charge/discharge current | 100A / 100A |
| Peak charge/discharge current | 103–120A at 2 minutes / 121–200A at 15 seconds |
| Communication | CAN, RS485 |
| Maximum quantity in one battery group | 20 batteries* |
| Maximum strings | 6* |
| Working temperature | -20°C to +55°C (self-heating version)** |
| Storage temperature | -20°C to +60°C |
| Short current / duration time | <1,000A / 1ms |
| Cooling type | Natural |
| Protective class | Class I |
| IP rating of enclosure | IP65 |
| Anti-corrosion classification | C5-M |
| Humidity | 5–95% RH, non-condensing |
| Maximum altitude | ≤4,000m |
| Certifications | IEC62619, IEC63056, VDE2510-50, IEC62477-1, UN38.3, RoHS, REACH, WEEE, EMC/CE |
| Design life at 25°C | 15 years |
| Cycle life at 25°C | 8,000 cycles*** |
| Interaction | LED; Bluetooth and Wi-Fi optional |
*An LV-HUB-V2 is required for multi-group parallel connection. Each group supports up to 19 batteries.
**Self-heating activates between -20°C and -10°C. Charging and discharging are permitted only above -10°C. The BMS limits current in extreme temperatures.
***Cycle-life data is based on 25°C, a 0.5C rate and 5%–95% state of charge conditions.
Documents available for download
- Pylontech Fidus Pro 5.12kWh product page and datasheet information
- Please contact Energian for the latest Pylontech Fidus Pro installation and user manual before purchase or installation.
Shipping and UK expert support
Shipping is available to the UK, Ireland, Africa, the Caribbean and worldwide. If a shipping rate is not shown at checkout, contact us on +44 2080 640335 or info@energian.co.uk for a quote.
UK expert support is available for product questions and system-design support. Contact Energian by phone, email or live chat, or visit our office for an in-person consultation.
Suggested image alt text: Pylontech Fidus Pro 5.12kWh LiFePO4 IP65 self-heating 48V battery for solar energy storage.
Suggested meta description: Buy the Pylontech Fidus Pro 5.12kWh LiFePO4 self-heating battery with IP65 enclosure, 4.86kWh usable capacity, C5-M corrosion rating and CAN/RS485 communications from Energian.
The supplied Pylontech Fidus Pro datasheet was used as the primary technical source. The requested source product page could not be retrieved at the time of drafting, so its document links should be checked and replaced with direct manufacturer download URLs before publishing.