
Fronius Reserva 4,240,370 High Voltage Storage Battery 3.15kWh LiFePO4
The code 4,240,370 identifies the 3.15kWh Fronius Reserva storage module, the basic element that makes up the Fronius Reserva high voltage battery. The modules are stacked in series on the system base: from 2 modules (Reserva 6.3, 6.31kWh) up to 5 modules (Reserva 15.8, 15.79kWh), with the possibility of connecting up to 4 batteries in parallel to reach a total of about 63kWh.
The cells are lithium iron phosphate (LFP), a thermally stable and non-flammable chemistry; Fronius states more than 6,000 tested cycles and a 10-year warranty. Each module contributes 102.4V nominal to the tower voltage and measures 250 x 780 x 176 mm. The battery works with the Fronius GEN24 Plus (Primo and Symo) and Verto Plus hybrid inverters via Modbus RS485, is IP65 certified and operates between -20 and +55 °C, therefore also in sheltered outdoor areas.
Key features
Technical specifications
| Feature | Value |
|---|---|
| Product code | 4.240.370 |
| Model | Fronius Reserva - 3.15kWh battery module (code 4,240,370) |
| Chemistry | LiFePO4 (LFP) |
| Nominal energy | Not declared separately by Fronius |
| Usable energy | 3.15kWh per module (6.31kWh with 2 modules, 15.79kWh with 5) |
| Rated voltage | 102.4V per module (204.8V with 2 modules, 512V with 5) |
| Voltage range | 92.8 - 113.6V per module (185.6 - 227.2V with 2 modules; 464 - 568V with 5) |
| Capacity | Not declared by Fronius |
| Max charge current | 32A (limited by the inverter) |
| Max discharge current | 32A (limited by the inverter) |
| Charge/discharge power | Determined by the paired Fronius hybrid inverter |
| Depth of discharge (DoD) | Not declared (Fronius states only the usable energy) |
| Modules per tower / scalability | From 2 to 5 modules per battery; up to 4 batteries in parallel (approx. 63kWh) |
| Compatible inverters | Fronius GEN24 Plus (Primo and Symo) and Verto Plus hybrid inverters; Symo Hybrid excluded |
| Communication | Modbus (RS485) |
| Protection rating | IP65 |
| Operating temperature | -20 ~ +55 °C |
| Humidity / Altitude | 5 - 95%; up to 2,000 m above sea level |
| Dimensions | 250 x 780 x 176 mm (single module) |
| Weight | Not declared for the single module (86.6 kg for the 2-module battery, 120 kg for the 3-module one) |
| Cycle life | Over 6,000 tested cycles |
| Warranty | 10 years |
| Installation | Indoors and protected outdoor areas |
Documentation
PDFDatasheet 4,240,370Official manufacturer documentPlease check compatibility with your inverter and with the other modules in the tower before ordering. Installation must be carried out by qualified personnel in accordance with the applicable standards.