Fronius Reserve Module 3.15 kWh - Battery Module 3.15 kWh
Payment and delivery
Payment and delivery
Payment
You can pay for your order by bank transfer, in HUF or EUR. Cash on delivery is available for orders up to HUF 500,000 with a handling fee of HUF 4,990. For orders over HUF 500,000, only bank transfer is possible. We will send you a proforma invoice by email, which will include the details required for the transfer.
Delivery
We deliver your orders throughout Hungary with the help of our reliable logistics partners or our own transport. Personal collection is possible by prior arrangement. The shipping cost is determined based on the size, weight and type of the ordered product:
- Small package: HUF 3,790
- Large package: HUF 6,490
- Heat pump: free delivery
- Solar panel and battery: individual shipping fee (based on size, weight and quantity)
Product description
Product description
The Fronius Reserva Module 3.15 kWh is a battery module built with lithium iron phosphate (LFP) cells, serving as the basic unit of Fronius Reserva high-voltage energy storage systems. A tower can accommodate 2 to 5 modules, allowing the total storage capacity to be flexibly scaled between 6.3 and 15.8 kWh. Multiple towers can also be connected, enabling the system to expand for higher energy demands.
Each module provides a usable capacity of 3.15 kWh with a nominal voltage of 102.4 V. For operation, each tower requires a Fronius Reserva BMS control unit, which monitors the modules and connects them to the hybrid inverter. Direct DC connection with Fronius GEN24 Plus and Verto Plus hybrid inverters allows for low-loss energy storage.
The module has IP65 protection, making it safe for both indoor and protected outdoor installations. Reliability is guaranteed by long-life LFP cells and international safety certifications (IEC62619, VDE 2510-50, UN38.3).
Key features at a glance:
- Usable capacity: 3.15 kWh
- Nominal voltage: 102.4 V
- Lithium Iron Phosphate (LFP) cell technology
- Modular expandability from 2 to 5 modules (6.3–15.8 kWh)
- Multiple towers can be paralleled
- Compatible with Fronius Reserva BMS controller
- Compatible with Fronius GEN24 Plus and Verto Plus inverters
- IP65 protection, indoor and protected outdoor installation
- RS485 communication interface
- International safety certifications
The unique feature of the Fronius Reserva Module 3.15 kWh is its flexible scalability and expandability, while the DC-side connection ensures high-efficiency energy storage.
| Névleges kapacitás (kWh) | 3.15 kWh |
|---|---|
| Hasznosítható energia | 3.15 kWh (100% DoD) |
| Csúcsteljesítmény | 5.12 kW |
| Max. töltőáram | 25 A |
| Max. kisütési áram | 25 A |
| Névleges feszültség | 102.4 V |
| IP védelem | IP65 |
| Működési hőmérséklet | -20 to +55 °C |
| Méret | 250 × 772 × 176 mm |
| Tömeg | 33.5 kg |
| Garancia | 10 years |
Do you have a question?
View frequently asked questions or contact us.
How do I choose the right battery?
How do I choose the right battery?
First, always check if the battery is compatible with your inverter, as not all systems work with all manufacturers. This information is usually found in the inverter's technical data sheet.
Next, you should consider what storage capacity you need (kWh). This depends on how much energy you want to store and which appliances you wish to operate in case of a power outage. If you are considering future expansion, it is advisable to choose a modularly expandable system.
An important distinction is that some systems operate in a closed ecosystem (e.g., only compatible with batteries from their own manufacturer), while other inverters can be connected to products from multiple manufacturers, thus providing greater flexibility.
If you are unsure about your choice, it is worth seeking expert advice – this can help avoid compatibility issues and unnecessary costs.
How do inverter types differ?
How do inverter types differ?
Inverters differ in several aspects, depending on the system and requirements for which they are used.
1. Grid-tied (on-grid) inverter
This is the most common type. It feeds the generated energy directly back into the grid and does not operate during a power outage.
2. Hybrid inverter
It is also capable of managing batteries, so the generated energy can be stored. In the event of a power outage, certain systems can also provide backup power.
3. Off-grid inverter
Completely independent of the grid. Used in places where there is no electrical grid (e.g., holiday homes, farmsteads).
4. By phase: single-phase and three-phase
Single-phase: for smaller systems (family homes, lower consumption)
Three-phase: for larger systems, with balanced load distribution
5. String inverter vs. optimized system
String inverter: several panels connected in series
Optimized system: individual optimizers per panel, better performance in case of shading
What happens in a power outage?
What happens in a power outage?
In the event of a power outage, the system's operation depends on the inverter type.
If the inverter has a backup (off-grid) function, it automatically switches to battery mode during a power outage, allowing selected consumers (e.g., lighting, refrigerator, essential appliances) to continue operating.
If the inverter does not support this function, the system will shut down in the event of a power outage. This means there will be no power supply even if the solar panels are generating electricity, as grid-tied inverters do not operate without grid voltage for safety reasons.
Therefore, if continuous power supply is important, it is advisable to choose an inverter-battery system that supports backup operation.
What is the warranty on the batteries?
What is the warranty on the batteries?
Battery warranties vary by manufacturer and type.
In most cases, a 5–10 year manufacturer's warranty is provided, which for some models may also be tied to a specific number of charging cycles or performance.
The exact warranty conditions are specified for each product, so before purchasing, you can clearly see the duration and conditions under which the warranty is valid.
If you have any questions regarding the warranty, we will help you navigate the details to ensure you choose the system that best suits your needs.
What happens if the battery fails?
What happens if the battery fails?
As a first step, it's worth checking if the problem is indeed with the device itself, as in many cases, the issue lies with settings, communication, or system connection, rather than the battery.
If the fault is verifiably linked to the product, investigation and resolution will be carried out within the framework of warranty administration, involving the manufacturer or distributor.
If needed, we can assist in initiating and guiding this process to ensure troubleshooting is as quick and smooth as possible.
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