Fronius Reserva Battery Energy Storage - CEC Approved

Fronius Reserva Energy Storage is a DC-coupled, modular and high-voltage battery designed for efficient solar energy storage with minimal losses. 

Seamlessly compatible with Fronius Gen 24 Plus and the new range of Verto hybrid inverters, the Reserva integrates directly into solar systems for optimal performance.

Fronius Reserva uses lithium iron phosphate (LFP) chemistry ensuring long-lasting performance and safety, while supporting greater independence from the grid. Built for flexibility, each stack from 6.3 kWh to 15.8 kWh of capacity. Paralleled up to 4 stacked towers of total 63 kWh making it suitable for both residential and small commercial applications.

Its compact design, IP65 protection and ability to be installed indoors or outdoors areas make it a durable and versatile storage solution. With 10-year warranty coverage, European data security and reliable service, the system is built for long-term peace of mind.

Main Features

Modular, Space-Efficient Design. Fronius Reserva features a sleek, tower-style format with 2 to 5 stackable modules per unit, each offering approximately 3.15 kWh of capacity. System sizes include 6.3, 9.5, 12.6, and 15.8 kWh, with scalability up to 63 kWh via parallel connection of up to four towers.

LFP Cell Technology for Safety and Stability. Built with Lithium Iron Phosphate (LFP) pouch cells, Reserva offers improved safety, better thermal performance, and a compact internal layout—making it a reliable and efficient choice over conventional battery chemistries.

Engineered for Harsh Australian Environments. With an IP65 rating and C4 corrosion resistance, the battery is ideal for protected outdoor areas such as under eaves or verandas. It’s also suitable for coastal sites within 200 m of the shoreline.

Designed with Installers in Mind. Reserva includes Staubli MC4 EVO2 connectors, native support for 6 mm² and 10 mm² cables, front-facing LED indicators, and an integrated circuit breaker. Rear cable entry and side-mounted DC/comms interfaces simplify installation and wiring.

No External Combiner Required. Dual positive and negative DC connectors enable direct tower-to-tower linking, eliminating the need for separate combiner boxes and reducing installation time and component costs.

Integrated Fronius Ecosystem Support. Fully compatible with Fronius Smart Meters, OhmPilot, and Wattpilot EV Chargers. Its DC-coupled architecture ensures high round-trip efficiency with minimal energy loss through conversion.

Backup Power, Your Way. Choose basic backup via the Fronius PV Point (up to 3 kW single-phase socket during outages), or full automatic backup with a Fronius Backup Controller—delivering a smooth changeover to selected loads in 10–15 seconds.

10-Year Warranty with Local Support. Reserva is backed by a 10-year product warranty and supported by Fronius’s dedicated service network. Installers benefit from tools like Fronius.SOS for fast diagnostics and 24/7 assistance.

Quick Specs

• Usable capacity: 6.31–15.79 kWh
  
• Rated voltage: 204.8–512 V
  
• Max output current: 32 A
  
• Protection rating: IP65
  
• Operating temperature: -20 °C to +55 °C
  
• Installation: Indoor & sheltered outdoor
  
• Warranty: 10 years

Data	Reserva 6.3	Reserva 9.5	Reserva 12.6	Reserva 15.8
Usable capacity	6.31 kWh	9.47 kWh	12.63 kWh	15.79 kWh
Number of battery modules	2	3	4	5
Rated voltage	204.8 V	307.2 V	409.6 V	512 V
Voltage range	185.6 ~ 227.2 V	278.4 ~ 340.8 V	371.2 ~ 454.4 V	464 ~ 568 V
Maximum output current	32 A (all models)
Battery cell chemistry	Lithium iron phosphate (LFP)
Parallel operation	Up to 4 batteries
Dimensions (H × W × D)	860 × 780 × 176 mm	1100 × 780 × 176 mm	1360 × 780 × 176 mm	1610 × 780 × 176 mm
Total weight	86.6 kg	120 kg	153.5 kg	187 kg
Compatible inverters	Fronius hybrid inverter
Protection class	IP65
Max. altitude above sea level	2000 m
Ambient temperature range	-20 to +55 °C
Permissible humidity	5–95 %

Why Choose the Fronius Reserva?

About The Brand

At Fronius Australia, the company is driven by a visionary commitment to achieving 24 hours of sun. In every endeavour undertaken, Fronius Australia is dedicated to contributing to a future where 100% of energy derives from renewable and clean sources. Since 2010, Fronius Australia has been a provider of high-quality technologies and solutions designed to control and monitor sustainable solar energy. The company forms strategic partnerships with industry leaders and businesses, including Fronius Solutions Partners, to advance this vision. In addition, Fronius Australia conducts regular Fronius Solutions Workshops throughout the year to ensure that installers and system integrators remain competitive and stay current with industry developments. Fronius Australia takes pride in offering top-tier solutions that align with their three core criteria for any solar system: Flexibility, Uptime, and Optimisation.

Specifications

Fronius Reserva BROCHURE

Fronius Reserva DATASHEET

Fronius Reserva SAFETY DATASHEET

Fronius Reserva COMPATIBILITY GUIDE

Manual

Fronius Reserva MANUAL

Fronius Reserva QUICK START GUIDE