The Pylontech FIDUS LV is a low-voltage (51.2 V) LFP lithium battery, modular and stackable, designed for residential and commercial photovoltaic energy storage.
Each FIDUS LV module delivers 5.12 kWh at low voltage
(51.2 VDC) and stacks simply to follow your needs: up to 20 modules in
parallel, i.e. 102.4 kWh per battery group. A
plug & play architecture that simplifies installation and commissioning. Designed as an
open ecosystem, the FIDUS LV is compatible with more than 50 hybrid
inverter brands via the CAN and RS485 communication buses.
Why choose the FIDUS LV?
- LFP (LiFePO₄) cobalt-free chemistry: thermal safety and long service life.
- Modular and stackable: from 5.12 to 102.4 kWh per group (1 to 20 modules).
- Depth of discharge 95 %, i.e. 4.864 kWh usable per module.
- High energy efficiency: 95 %.
- IP65 rating and intelligent built-in BMS for indoor and outdoor installation.
- Self-heating Pro version (−20 °C) suited to cold climates.
- Open ecosystem: compatible with 50+ hybrid inverters (CAN 500 kbps / RS485).
Technical specifications
| Specification |
FB-L-5.12-EU |
FB-L-5.12-EU-Pro |
| Cell chemistry |
LFP (LiFePO₄) |
LFP (LiFePO₄) |
| Energy per module |
5.12 kWh |
5.12 kWh |
| Usable energy (DOD 95 %) |
4.864 kWh |
4.864 kWh |
| Nominal voltage |
51.2 VDC |
51.2 VDC |
| Charge / discharge current (continuous) |
100 A (1 C) |
100 A (1 C) |
| Depth of discharge (DOD) |
95 % |
95 % |
| Efficiency |
95 % |
95 % |
| Modules in parallel (max) |
20 |
20 |
| System energy (max / group) |
102.4 kWh |
102.4 kWh |
| Communication |
CAN 500 kbps / RS485 |
CAN 500 kbps / RS485 |
| Operating temperature |
−10 to 55 °C |
−20 to 55 °C (self-heating) |
| Relative humidity |
5 to 95 % |
5 to 95 % |
| Protection rating |
IP65 |
IP65 |
| Dimensions (W×D×H) |
630 × 165 × 360 mm |
630 × 165 × 360 mm |
| Weight |
45 kg |
45 kg |
Configurations & capacities
The FIDUS LV stacks module by module: choose the number of modules
according to the target capacity. Usable energy calculated at a depth of discharge of 95 %.
| Configuration |
Number of modules |
Total energy |
Usable energy (DOD 95 %) |
Nominal voltage |
| 1 module |
1 |
5.12 kWh |
4.86 kWh |
51.2 VDC |
| 2 modules |
2 |
10.24 kWh |
9.73 kWh |
51.2 VDC |
| 3 modules |
3 |
15.36 kWh |
14.59 kWh |
51.2 VDC |
| 4 modules |
4 |
20.48 kWh |
19.46 kWh |
51.2 VDC |
| 6 modules |
6 |
30.72 kWh |
29.18 kWh |
51.2 VDC |
| 10 modules |
10 |
51.2 kWh |
48.64 kWh |
51.2 VDC |
| 20 modules (max / group) |
20 |
102.4 kWh |
97.28 kWh |
51.2 VDC |
For higher-capacity installations, several groups can be
combined depending on the chosen hybrid inverter: contact SINES Export for the sizing of your project.
Safety & certifications
The cobalt-free LFP (LiFePO₄) chemistry offers excellent thermal stability.
The built-in BMS monitors the voltage, current and temperature of each module, and the IP65 rating
allows indoor as well as sheltered-outdoor installation.
- Cell & system safety: IEC 62619, IEC 63056.
- Transport: UN 38.3.
- European compliance: CE, EMC, VDE-AR-E 2510-50, IEC 62477-1.
- Environmental: RoHS, REACH, WEEE.
SINES Export distributes the Pylontech range to professionals —
installers, integrators and resellers — worldwide. See also Pylontech distributor,
Force H3,
Force H3X and
US2000 / US3000.
