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Fronius Reserva


Fronius Reserva is the ideal storage solution for those who want a complete and perfectly integrated system developed by a single manufacturer.

  • Lithium-iron-phosphate (LFP) battery
  • Nominal capacity (single module): 3.15 kWh
  • Stackable system (up to 5 modules in series)
  • Ultra-slim design and space-saving installation
  • 10-year warranty (residual capacity ≥80%)

Compact and space-saving design

With one of the thinnest profiles on the market, Fronius Reserva fits perfectly in small spaces, both in residential and business environments. Its sleek and modern design allows for a discreet and functional installation.

Flexibility and modularity

The modular system allows the storage capacity to be configured according to specific needs, from 6.3 to 15.8 kWh per tower. For greater needs, up to four towers can be connected in parallel, reaching a total capacity of 63 kWh.

Reliability and technical support

Even after 10 years of use, the battery maintains a guaranteed residual capacity of at least 80% of its initial capacity. Fronius offers comprehensive technical support for the Fronius Reserva, with qualified operators who can access all system data to provide efficient after-sales service. The free Solar.SOS platform is always available to installers, offering additional support throughout the country.