Fronius Reserva Battery Energy Storage - CEC Approved
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- Description
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Fronius Reserva Energy Storage is a DC-coupled, modular and high-voltage battery designed for efficient solar energy storage with minimal losses.
Arriving October 2025... Pre-order yours now!
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, it can be scaled from 6.3 kWh to 15.8 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
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Usable capacity: 6.31–15.79 kWh
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Rated voltage: 204.8–512 V
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Max output current: 32 A
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Protection rating: IP65
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Operating temperature: -20 °C to +55 °C
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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.
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Important Disclaimer: Installation of Hardwired Electrical Products in Australia
Please read the following information, including the disclaimer at the bottom of this page;
by purchasing from Buzz Energy Systems, you understand and acknowledge these terms.
When it comes to the installation of hardwired electrical products in Australia, it is important to be aware of the regulations and guidelines in place to ensure safety and compliance.
As per the Electrical Safety Act, installations operating at ELV (Extra Low Voltage) levels of 120 VDC and below can be installed by individuals with the necessary knowledge and skills.
However, it is crucial to note that installations operating above ELV levels require the expertise of licensed electricians and experienced installers. Products falling under this category are not suitable for DIY (Do-It-Yourself) installation and must be handled by professionals. Attempting to install such products without the proper qualifications can not only compromise performance but also invalidate any manufacturer's warranties.
At Buzz Energy Systems, we recognise the importance of reliable and efficient installations that prioritise safety, performance and warranty compliance. Our team consists of qualified tradespeople and specialists who are equipped with the expertise required to handle complex electrical installations.
For installations that operate above ELV levels, we strongly advise against DIY installation. Instead, we recommend seeking professional assistance from licensed electricians and experienced installers to ensure the proper installation and optimal performance of such products.
When it comes to installing hardwired electrical products above ELV levels, rest assured that Buzz Energy Systems can provide the necessary qualified tradespeople and specialists. Our professional installation services guarantee compliance with regulations, the preservation of manufacturers warranties and most importantly, your safety.
Do not compromise on the installation of your hardwired electrical products. Trust Buzz Energy Systems for a professional and hassle-free experience.
Contact us today for advice or to schedule your installation with our qualified team.
Legal Indemnity Disclaimer
By engaging with Buzz Energy Systems, purchasing and utilising our products and services, you acknowledge and agree to the following indemnity disclaimer. This disclaimer covers any potential claims for death, injury, property damage, financial loss, or warranty claims:
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Assumption of Responsibility: Buzz Energy Systems shall not be responsible or liable for any consequences arising from the installation, operation or use of our products or services, excluding any rights or remedies you may have under the Australian Consumer Law or other applicable legislation. You, as the user or purchaser, assume full responsibility for any potential risks, damages, or losses that may occur, including those not covered under Australian Consumer Law.
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Proper Installation and Use: It is your responsibility to ensure that the installation, operation, and use of our products align with relevant laws, regulations, and safety guidelines. We strongly recommend seeking the expertise of licensed professionals to handle installations above ELV levels and to ensure compliance with all applicable codes and standards.
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Personal Injury and Property Damage: Buzz Energy Systems shall not be held liable for any injuries, damages, or losses caused by improper installation, operation, or maintenance of our products. You agree to indemnify and hold Buzz Energy Systems harmless from any liability in relation to personal injury or property damage resulting from the use of our products or services.
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Financial Loss: Buzz Energy Systems shall not be liable for any financial loss, including but not limited to direct or indirect loss of profits, revenue, or savings, arising from the use or inability to use our products or services. Any costs associated with repairs, replacements, or damages incurred fall under your responsibility.
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Warranty Claims: Buzz Energy Systems provides manufacturer warranties on our products, subject to the terms and conditions outlined in the accompanying documentation. However, we shall not be held liable for any warranty claims resulting from improper installation, operation or maintenance of our products. Warranties may become void if our products are not installed or used in accordance with supplied instructions or if unauthorised modifications or repairs are made.
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Independent Advice: It is recommended that you seek independent advice, particularly legal or professional guidance, to assess the suitability of our products and services for your specific requirements.
By engaging with Buzz Energy Systems, you acknowledge and voluntarily assume all risks associated with the installation, operation, and use of our products and services. This disclaimer extends to any third parties who may be affected by the use of our products or services.
Please note: This indemnity disclaimer is intended to be a general statement of our position and should not be interpreted as a comprehensive legal contract. We recommend seeking legal advice to draft and review any specific agreements or contracts related to the use of Buzz Energy Systems' products and services.
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