Pylontech Fidus Pro 20kWh Battery Stack Completed Kit - Self Heating - IP65

Pylontech Fidus Pro 20kWh LiFePO4 Battery System, Wi-Fi 4 x 5.12kWh Pylontech Fidus Pro Batteries with Self Heating, Wi-Fi Monitoring and IP65 Housing The Pylontech Fidus Pro is the advanced evolution of the well known Pylontech US5000 and US5000C battery concept. This new generation low voltage LiFePO4 battery is designed for more demanding installations, offering a stronger IP65 housing, C5-M anti-corrosion protection, integrated Wi-Fi monitoring support and a smart self-heating function for cold weather operation. With 20kWh total nominal storage capacity from 4 x 5.12kWh batteries, this system is ideal for residential solar battery storage, off-grid systems, hybrid inverter installations, backup power and larger expandable energy storage projects. Key Features 20kWh total nominal battery capacity using 4 x 5.12kWh battery modules 51.2V low voltage LiFePO4 battery technology Pro version with integrated smart self-heating function Operating temperature range from -20°C to 55°C IP65 rated enclosure for indoor, outdoor and harsher environments C5-M anti-corrosion protection for improved durability Wi-Fi monitoring support for remote visibility and battery data upload CAN and RS485 communication for compatible hybrid and off-grid inverters Advanced BMS protection with cell balancing and active safety management Expandable design with up to 20 batteries in one string, up to 6 strings supported with suitable system design and communication hub 8000 cycle life at 25°C / 0.5C according to manufacturer data Product Overview The Fidus Pro takes the proven Pylontech low voltage battery platform to the next level. Compared with traditional indoor rack batteries, it is designed for real world installations where moisture, dust, cold temperatures and harsher site conditions may be a concern. It combines high capacity lithium storage with a durable IP65 enclosure, C5-M anti-corrosion protection, smart heating and modern monitoring support, making it a strong choice for installers looking for a reliable battery solution for both indoor and protected outdoor applications. The built-in self-heating function automatically manages heating when low temperature conditions are detected, supporting operation down to -20°C. According to manufacturer data, the battery can heat from -20°C to at least 5°C in approximately 2 hours, depending on available system power and site conditions. The IP65 rated enclosure helps protect the battery against dust and water ingress, making it suitable for garages, utility rooms, outbuildings, workshops, plant rooms, covered outdoor areas and dusty or humid environments where standard indoor-only batteries may not be ideal. The C5-M anti-corrosion protection gives additional confidence in challenging environments, especially where humidity or corrosive conditions may affect standard battery housings over time. Technical Specifications Specification Value Total nominal capacity 20kWh (4 x 5.12kWh modules) Nominal voltage 51.2V Battery chemistry LiFePO4 (low voltage) Continuous charge/discharge current 100A per battery Peak charge/discharge current 120A for 2 minutes, 200A for 15 seconds Operating temperature range -20°C to 55°C Enclosure rating IP65 Corrosion protection C5-M rated Communication protocol CAN and RS485 Monitoring Wi-Fi module with Pylontech App support Expandability Up to 20 batteries per string, up to 6 strings with suitable system design Cycle life 8000 cycles at 25°C / 0.5C (manufacturer data) Weight, physical dimensions and certification details were not confirmed in the source specification. Please contact us if you need these figures before purchase. 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 self-consumption systems Expandable battery banks for larger energy storage projects What Is Included 4 x Pylontech Fidus Pro 5.12kWh LiFePO4 batteries Link power cables and communication cables 2 metre power cables for connection from the batteries to the inverter Wi-Fi module for access to the Pylontech App Ground metal mounting bracket Installation and Safety Notes This is a high capacity lithium battery system and must be installed by a qualified electrician or solar installer in accordance with local wiring regulations. Correct cable sizing, fusing, isolation, surge protection and earthing are essential for safe and reliable operation. Ensure the battery is installed on a suitable wall or floor mounting arrangement with adequate ventilation and clearance, and confirm compatibility with your inverter's communication protocol (CAN or RS485) before installation. Do not attempt to open, modify or repair the battery enclosure. For commercial installations, professional system design and commissioning is recommended.