Since 2008
Based in Belgium and France
+ 60 000 clients
Our blog
A.S.S.
Shopping Cart
The Fronius Reserva 3.15 kWh revolutionises residential solar energy storage with its ultra-slim design, measuring just 176 mm deep. This modular high-voltage battery uses secure Lithium Iron Phosphate (LFP) technology and offers a scalable capacity of 6.3 to 15.8 kWh to suit your needs.
Key features:
Product available to order
You are about to create a quotation for the kit Fronius Reserva Solar Battery - Modular High-Voltage Storage 3.15 kWh.
This action will open the quotation app in a new tab.
High-voltage energy storage battery – intelligent modular solution
The ultra-compact, scalable solar storage solution that revolutionises your energy independence
Product overview
The Fronius Reserva revolutionises residential solar energy storage with its ultra-flat design and advanced high-voltage technology. This modular battery offers a smart storage solution that adapts perfectly to your energy needs with particularly efficient DC coupling.
At just 176 mm deep, the Reserva system can be easily installed in even the smallest of spaces, behind a door or in a cramped utility room. Its high-voltage technology optimises the cost-effectiveness of your photovoltaic system.
Important notice for our customers in Belgium:An environmental contribution of €96.82 excluding VAT will be applied to the purchase of each Fronius Reservalithium battery .
More information at the bottom of the page.
Modularity & scalability
• Capacity: 6.3 to 15.8 kWh
• Up to 4 batteries in parallel
• Flexible expansion
Maximum Efficiency
• High-voltage technology
• Lossless DC coupling
• GEN24 Plus compatible
Enhanced Safety
• Full certifications
• Secure LFP technology
• IP65 protection
Complete range
Technology: Lithium Iron Phosphate (LFP)
Maximum current: 32 A (limited by the inverter)
Parallel operation: Up to 4 Reserva batteries
Operating temperature: -20°C to +55°C*
Permissible humidity: 5-95%
Maximum altitude: 2,000 m
Installation: Indoor and protected outdoor areas
Protection rating: IP65
Interfaces: Modbus (RS485)
DC connection: 4x Amphenol
Warranty: 10 years
*Depending on the temperature, the charge/discharge capacity may be limited
Fronius now offers a complete ecosystem for 24 hours of sunshine. The Reserva integrates seamlessly with your existing photovoltaic system, with a single point of contact for service and maintenance.
As part of our commitment to regulatory compliance and environmental responsibility in Belgium, we would like to inform our customers that the purchase of a Fronius Reserva lithium battery is subject to a mandatory environmental levy.
An amount of €96.82 excluding VATmust be added to each battery purchased as a direct contribution to Bebat, the organisation responsible for managing batteries and accumulators in Belgium. This measure complies with current Belgian environmental legislation.
Important:When purchasing lithium batteries, please add the corresponding product "Bebat Fronius Reserva environmental contribution" according to the number of batteries you are ordering. Otherwise, we will recalculate and invoice the amount after purchase.
This tax only applies to Belgian customers.
check_circle
This store asks you to accept cookies for performance, social media and advertising purposes. Social media and advertising cookies of third parties are used to offer you social media functionalities and personalized ads. Do you accept these cookies and the processing of personal data involved?