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Manufacturer information
Fronius is a well-established Austrian technology company known for its innovation and high-quality products. It operates in three core business sectors: Solar Energy, where they are a leading manufacturer of residential and commercial solar inverters; Perfect Welding, a division that develops advanced welding systems and solutions; and Perfect Charging, which specializes in intelligent battery charging technology for industrial and automotive applications. The company is committed to sustainable solutions and has a strong global presence, with its brand being synonymous with reliability and technological advancement in each of its markets.

Product description
The Fronius Reserva Pro is a DC-coupled high-voltage LFP battery for larger home and small commercial PV storage, paired with a Fronius Primo GEN24 Plus SC, Symo GEN24 Plus SC or Verto Plus hybrid inverter (the 12.0–20.0 kWh sizes work with all three; the 24.0, 28.0 and 32.0 kWh sizes require Symo GEN24 Plus or Verto Plus). It scales in 3.98 kWh module steps across six sizes — 12.0, 16.0, 20.0, 24.0, 28.0 and 32.0 kWh (3 to 8 modules) — and up to four towers run in parallel for as much as 128 kWh, bringing small commercial systems onto the same platform. A 50 A maximum output current (limited by the inverter) gives Reserva Pro noticeably more DC power than the standard Reserva, so larger Verto Plus systems can charge and discharge harder. DC coupling stores solar energy with minimal losses; monitoring is via Solar.web, and with Solar.web Premium the Energy Cost Assistant optimises charging against dynamic tariffs. Rated IP65, safety class II, −20 °C to +50 °C, up to 2000 m, communicating over Modbus (RS485). 10-year warranty to 80% SOH.