Felicity FLS battery module – 5.12 kWh low-voltage storage for
Product information
The Felicity FLS48100SMG1 battery module from the renowned FLS series is a high-performance, stackable low-voltage lithium iron phosphate (LiFePO₄) battery with a capacity of 5.12 kWh. Thanks to its intelligent, space-saving design and modular expandability, the system is ideal for use in private households, commercial facilities and emergency power systems.
Highlights at a glance
- Reliable capacity: 5.12 kWh per module for effective energy storage
- High scalability: Up to 8 modules can be operated in parallel (40.96 kWh)
- Flexible installation: Wall- or floor-mountable, stackable design
- Smart security: Integrated BMS, fuse and circuit breaker
- Durable: ≥ 6000 charge cycles at 90% depth of discharge (DoD)
Efficient energy storage for domestic and commercial applications
With a nominal voltage of 51.2 V and a capacity of 100 Ah, the Felicity battery module is suitable for a wide range of applications, from single-family homes to industrial emergency power supplies. Its high efficiency and modular expandability make the system particularly cost-effective.
Flexibility and easy expansion
The clever, stackable design enables rapid scaling up to 8 modules with a total capacity of up to 40.96 kWh. Thanks to the plug-and-play principle and ease of use, integration into existing systems is particularly straightforward.
Safety and reliability
The Felicity FLS series uses high-quality LiFePO₄ cells, which are known for their high thermal stability and long service life. The integrated battery management system (BMS) provides reliable protection against overcharging, deep discharge, short circuits and overheating.
Who is the Felicity battery module suitable for?
This battery pack is ideal for:
- Homeowners who wish to increase their self-consumption rate
- Commercial enterprises that wish to absorb peak loads or operate independently
- PV installers who require flexible and scalable storage solutions
- Industrial users who rely on robust emergency power solutions
| Model | FLS48100SMG1 |
| Battery type | LiFePO4 |
| Module capacity (kWh) | 5.12 |
| Module nominal voltage (V) | 51.2 |
| Module capacity (Ah) | 100 |
| System nominal voltage (V) | 51.2 |
| System operating voltage (V) | 44.8-57.6 |
| System capacity (kWh) | 5.12 |
| System usable capacity (kWh) | 4.6 |
| Charging/discharging current (A) - Recommendation | 50 |
| Charging/discharging current (A) - Nominal value | 60 |
| Charging/discharging current (A) - Peak discharge (2 min,25°C) | 100 |
| Operating temperature (°C) | Charging: 0 ~ 55 / Discharging: -20 ~ 55 |
| Display | Control Module: LCD/Battery Module: LED |
| Communication port | CAN, RS485 |
| Humidity | 5% ~ 95% |
| Altitude | ≤2000m |
| IP rating of the enclosure | IP65 |
| Storage temperature (°C) | 0 ~ 35 |
| Dimensions (W/D/H, mm) | 600 * 450 * 180 |
| Weight (kg) | 46 |
| Installation location | Floor mounting / Wall mounting |
| Recommended depth of discharge | 90% |
| Cycle life | 25 ± 2°C, 0.5C/0.5C, EOL70% ≥ 6000 |
| Warranty | 10 years |
| Certifications | See downloads / sales enquiry |
FAQs on the Felicity battery storage system
Which inverters is the Felicity 5.12 kWh low-voltage module compatible with?
The module is compatible with many 48 V inverters, including models from Deye, Growatt, Victron, Solis, Sofar, MPP Solar and Felicity itself. It is not compatible with high-voltage inverters such as Huawei SUN2000 or Kostal Plenticore Plus.
Can I expand the storage capacity with additional modules?
Yes, the Felicity module features a modular design. Depending on the model, up to 8 or even 15 modules can be combined, enabling a total capacity of up to 40.96 kWh.
What safety features does the module offer?
The module features an integrated battery management system (BMS) that continuously monitors voltage and temperature. It also offers protective mechanisms such as overvoltage protection up to 6000 V and an aerosol fire suppression system.
Is the module maintenance-free and how is installation carried out?
Yes, the module is maintenance-free. It is designed for wall mounting and weighs between 51 and 92 kg, depending on the version. Installation can be carried out by one person.
Is there a way to monitor the battery status?
Yes, the module offers integrated WiFi monitoring, enabling real-time monitoring of charge level, temperature and other parameters.
Scope of delivery Felicity FLS48100SMG1 battery module (5.12 kWh slave unit):
Module type
- This is purely an expansion module (slave unit) for an existing Felicity tower system. It requires a master module (control module) for operation.
1 x Felicity FLS48100SMG1 slave battery module (5.12 kWh)
- A pure expansion battery module with 5.12 kWh (100 Ah) without its own higher-level control unit.
1 x connecting bridge / parallel connection cable
- Short, robust cables or a fixed bridge to connect this module to an existing master or slave module.
1 x earthing cable
- A short protective conductor cable for connection to the earth point of the neighbouring module.
1 x mounting accessories (rack/tower mounting)
- Usually includes screws or clamps to stack the module securely on another one.
1 x operating and installation manual
- A printed manual describing the expansion of an existing tower system.
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