Description
xPylontech Fidus Pro 5.12kWh LiFePO4 Battery with Self Heating, Wi-Fi Monitoring and IP65 Housing
The Pylontech Fidus Pro FB-L-5.12-EU-Pro is the next generation of low-voltage lithium battery storage from Pylontech. Designed as an advanced alternative to the well-known US5000C battery platform, Fidus adds stronger environmental protection, smart self-heating, modern monitoring options and a robust IP65 anti-corrosive housing for demanding installations.
With 5.12kWh nominal capacity, lithium iron phosphate battery chemistry and intelligent BMS protection, the Fidus Pro is suitable for residential solar storage, off-grid systems, backup power, hybrid inverter systems, garages, outbuildings, plant rooms and harsh dusty environments.
Key Features
- 5.12kWh nominal capacity with 51.2V low-voltage LiFePO4 technology
- Pro version with integrated smart self-heating function for cold weather operation
- Operating temperature range from -20°C to 55°C for the Pro heating model
- IP65-rated enclosure for indoor, outdoor and high-humidity environments
- C5-M anti-corrosion protection for improved durability in harsher areas
- CAN and RS485 communication for compatible low-voltage hybrid and off-grid inverters
- Wi-Fi monitoring support for battery data upload, remote monitoring and maintenance
- LED, Bluetooth and Wi-Fi interaction support, depending on final configuration
- Advanced BMS protection with cell balancing and active safety management
- 100A continuous charge and discharge current
- Peak charge and discharge support up to 120A for 2 minutes and up to 200A for 15 seconds
- Expandable design with up to 20 batteries in one string and up to 6 strings with suitable system design
- 8000 cycle life at 25°C / 0.5C according to manufacturer data
Advanced Version of the Popular Pylontech US5000C Concept
The Fidus Pro takes the proven Pylontech low-voltage battery concept further. Compared with standard indoor rack batteries, Fidus is built for more demanding real-world environments. It combines high-capacity energy storage with an IP65 housing, anti-corrosion protection, smart heating and monitoring support, making it a strong choice for installers who need a durable battery for indoor and outdoor installations.
Smart Self-Heating for Cold Weather
The FB-L-5.12-EU-Pro model includes a built-in heating function. The battery automatically manages heating when low-temperature conditions are detected, helping to maintain stable operation in cold climates. The heating function is enabled by default and can also be managed through the battery controls or APP settings.
The heating system is designed to support operation down to -20°C. The manufacturer states that the battery can heat from -20°C to at least 5°C in approximately 2 hours, depending on system power availability and operating conditions.
IP65 Housing for Indoor, Outdoor and Harsh Environments
Fidus Pro is built with an IP65-rated enclosure, helping protect the battery against dust and water ingress. This makes it suitable for installations where traditional indoor-only batteries may not be ideal, including garages, utility rooms, outbuildings, workshops, covered outdoor areas and dusty or humid environments.
The C5-M anti-corrosion protection gives additional confidence for challenging locations, including high-humidity and harsher environments where standard battery housings may be more vulnerable to corrosion.
Smart Monitoring and Communication
The battery supports CAN and RS485 communication, allowing integration with compatible hybrid and off-grid inverters. Wi-Fi monitoring support allows battery data to be uploaded to the Pylontech cloud for remote visibility, monitoring, maintenance and upgrade support when the correct Wi-Fi data acquisition option is used.
Flexible Installation Options
The Fidus battery has been designed for flexible installation. It can be wall-mounted, rack-mounted or installed using suitable floor-standing or stacking arrangements, depending on the project and accessories used. This makes it adaptable for domestic, commercial and light industrial battery storage systems.
Expandable Energy Storage
One Fidus Pro battery provides 5.12kWh nominal capacity. For larger installations, the system can be expanded with multiple batteries. Up to 20 batteries can be connected in one battery group, and up to 6 strings can be used with the correct system design and communication hub, allowing large storage systems for homes, businesses, backup power and self-consumption projects.
Ideal Applications
- Residential solar battery storage
- Hybrid inverter systems
- Off-grid solar PV systems
- Backup power systems
- Garage, plant room and outbuilding installations
- Dusty, humid and harsher environments
- Commercial energy storage and self-consumption systems
- Expandable battery banks for larger energy storage projects
Important Installation Notes
- Installation must be carried out by a competent and qualified installer.
- The battery must not be connected directly to AC power.
- The battery is a 51.2V DC low-voltage system and must not be connected in series.
- The battery system must be correctly grounded.
- Battery, inverter and communication settings must be compatible before commissioning.
- For multi-string battery systems, a suitable Pylontech LV-Hub may be required.
- All batteries in a parallel heating system should be the Pro heating model for the heating function to operate correctly.
Why Choose the Pylontech Fidus Pro?
The Pylontech Fidus Pro is a stronger, smarter and more weather-resistant evolution of low-voltage lithium battery storage. It offers the trusted reliability of Pylontech battery technology with additional protection for outdoor, dusty, humid and cold environments. For installers and end users who need a durable battery beyond standard indoor rack storage, Fidus Pro is a professional choice for modern solar energy storage systems.
Specifications
xTechnical Specifications
| Model | FB-L-5.12-EU-Pro |
| Product Series | Pylontech Fidus Battery Series |
| Battery Type | Li-ion LFP / LiFePO4 |
| Nominal Voltage | 51.2V DC |
| Nominal Capacity | 5120Wh / 5.12kWh |
| Usable Capacity | 4864Wh |
| Depth of Discharge | 95% |
| Dimensions | 600mm W x 361mm D x 168mm H |
| Weight | 44kg ±0.5kg |
| Discharge Voltage Range | 42.5V to 56.8V DC |
| Charge Voltage Range | 56V to 56.8V DC |
| Maximum Continuous Charge / Discharge Current | 100A / 100A |
| Peak Charge / Discharge Current | 103A to 120A for 2 minutes, 121A to 200A for 15 seconds |
| Communication | RS485, CAN |
| Wi-Fi Monitoring | Supported with compatible Wi-Fi data acquisition stick |
| User Interface | LED, Bluetooth and Wi-Fi support depending on configuration |
| Heating Function | Yes, integrated low-temperature self-heating function |
| Working Temperature | -20°C to 55°C |
| Storage Temperature | -20°C to 60°C |
| Maximum Batteries in One Group | 20 batteries |
| Maximum Strings | 6 strings, suitable communication hub required for multi-string systems |
| Cooling Type | Natural cooling |
| Protection Class | Class I |
| IP Rating | IP65 |
| Anti-Corrosion Rating | C5-M |
| Humidity Range | 5% to 95% RH, no condensation |
| Altitude | Up to 4000m |
| Short Current / Duration Time | <1000A / 1ms |
| Cycle Life | 8000 cycles at 25°C / 0.5C |
| Design Life | 10 years at 25°C |
| Certifications | IEC62619, IEC63056, VDE-AR-E 2510-50, IEC62477-1, EMC / CE |
| Environmental Compliance | RoHS, REACH, WEEE |
| Transport Certification | UN38.3 |
Installation Notes
- The battery must be installed by a competent and qualified installer.
- The battery must not be connected directly to AC power.
- The 51.2V battery system must not be connected in series.
- The battery system must be correctly grounded.
- For multi-string systems, a suitable Pylontech LV-Hub may be required.
- All batteries in a parallel heating system should be the Pro heating model for the heating function to operate correctly.
Return Policy
xWe offer a 14-day, no-quibble returns or replacement policy because we want you to be totally satisfied with your purchase.
If you are unhappy in any way with your purchase, you can return it for a refund or a replacement, as long as you return it in the same condition as it arrived (original/undamaged packaging and product) and within 30 days of receiving it. We will pay for your return postage on a faulty item as long as you send it using Royal Mail 2nd class recorded delivery (for EU or International Shipments, you have to use our UPS account, we will provide you with a return label)
Please keep in mind the following:
- Non-faulty items returned after 14 days and/or not in their original, undamaged packaging can only be exchanged for store credit - 15% off the items returned.
- Items returned within 14 days but not in their original and undamaged packaging will also incur a -15% charge per package.
- If you return an item that doesn't adhere to our returns procedure or doesn't include a returns form, you may be liable for a £10 administration fee
- Individual items from a bundle can't be returned, refunded or exchanged. If you want a refund/credit/exchange for a bundle, all items must be returned to us.
Before you return your item, please make sure that:
- You follow our returns process (outlined below)
- The goods and packaging are undamaged
IMPORTANT: We need to be able to identify an item with your order. We can only do this if you follow our returns process. Please do not send us items back that do not follow this process as they cannot be identified properly and will not be replaced or refunded.
What delivery method do I need to use when returning an item?
You must send the goods back to us via Royal Mail 2nd class recorded delivery. Refunds on faulty items returned are reimbursed within 5 working days.
Can I return just one item from multiple purchases?
Yes. Once you start the returns process you will go to a page that will allow you to choose which items you want to be replaced or refunded.
Returning faulty goods
If your item is faulty, you need to follow the returns policy, where you will be able to state that it’s faulty. The product will then arrive at our warehouse for testing.
If your purchase is not within 14 days
You can still exchange your item for a different product or for credit to use on the Voltacon Solar or Ledison-led-lights.co.uk websites (-15% from the credit amount).
Returns outside of the 14-day period do not qualify for the free returns policy.
Returning an item within the warranty
If you have a warranty and want to return a faulty item, you just need to follow our standard returns process. When we receive your item, we will then check that it’s within warranty and for any faults before arranging a replacement.