Pre-Order Available The Fidus Pro 51.2V / 5.12kWh LV battery by Pylontech is a robust residential energy storage solution designed to operate reliably in extreme temperatures. A smart self-heating function activates in low-temperature conditions, automatically warming the battery to ensure stable operation in cold weather. Expandable from 4.8 kWh to 547 kWh, the Fidus Pro supports seamless grid switching, strong overload protection, and remote monitoring, delivering stable, flexible energy for homes, farms, and small commercial applications, even in humid or dusty environments. The Fidus Pro is an ideal energy storage solution for off-grid, backup, self-consumption, and small-commercial systems. Key features: Reliable operation in a wide temperature range (-4°F to 131°F) P65-rated, self-contained design with internal plug connections C5-M anti-corrosion level for coastal & high-humidity regions Flexible wall, ground or rack-mounting options Removable handles to lift into place Advanced BMS monitors and protects against overcharge/over-discharge, excess current, and high/low temperatures, while managing the allow-to-charge/discharge state, balance, and voltage of each individual cell CAN bus protocol for closed-loop communication with Victron GX devices Compatible with major inverter brands Long life span of 8,000 cycles at 95% depth of discharge Continuous 1C rate, Peak 2C rate for 15s Integrated soft-start function UL 1973 and UL 9540A-Certified Robust 10-year warranty