Felicity Solar FLA48250 12.5kWh Lithium Battery
The Felicity Solar FLA48250 is a high-capacity 12.5kWh low-voltage lithium battery designed for solar, backup and energy storage applications.
With a nominal voltage of 51.2V and capacity of 250Ah, the battery is ideally suited to larger residential systems, businesses and installations requiring substantial battery storage from a single unit.
The FLA48250 uses Lithium Iron Phosphate (LiFePO₄) technology, providing excellent safety, long cycle life and reliable performance.
An integrated Smart Battery Management System (BMS) continuously manages battery operation, while the built-in breaker, fuse and fire protection system provide additional layers of protection.
Key Features
12.5kWh nominal energy capacity
51.2V nominal voltage
250Ah battery capacity
Premium LiFePO₄ lithium battery technology
≥95% Depth of Discharge (DOD)
6,000+ cycle life
Recommended charge/discharge current up to 150A
Recommended charge/discharge power up to 7.5kW
Integrated Smart BMS
Built-in breaker and fuse
Built-in fire protection system
Built-in WiFi monitoring
CAN / RS485 inverter communication
Compatible with leading inverter brands
Expandable up to 15 batteries in parallel
Maximum expandable storage of 187.5kWh
Flexible wall-mounted or floor-mounted installation
Low-voltage 48V-class battery system
Maintenance-free operation
Suitable for residential and commercial applications
Technical Specifications
Brand: Felicity Solar Model: FLA48250 Battery Type: Lithium Iron Phosphate (LiFePO₄) Nominal Energy: 12.5kWh Nominal Voltage: 51.2V Capacity: 250Ah Operating Voltage: 44.8–57.6V Depth of Discharge: ≥95% Recommended Charge/Discharge Current: ≤150A Recommended Charge/Discharge Power: ≤7,500W Cycle Life: ≥6,000 Cycles Communication: RS485 / CAN Monitoring: Built-in WiFi Scalability: Up to 15 Units in Parallel Maximum Expandable Capacity: 187.5kWh Installation: Wall-Mounted / Floor-Mounted Battery Management: Integrated Smart BMS Safety: Integrated BMS, Breaker, Fuse & Fire Protection Battery System: Low Voltage / 48V Class
LiFePO₄ Battery Technology
The Felicity Solar FLA48250 uses Lithium Iron Phosphate (LiFePO₄) battery chemistry, one of the preferred technologies for modern stationary solar energy storage.
LiFePO₄ technology provides excellent thermal stability, high efficiency and a significantly longer service life compared with traditional lead-acid battery solutions.
With a cycle life of 6,000 cycles or more, the FLA48250 is designed for long-term daily solar and backup power applications.
12.5kWh Energy Storage
With 12.5kWh of nominal storage capacity in a single battery, the FLA48250 provides substantial energy storage without requiring multiple smaller battery modules.
This makes it an excellent solution for larger homes and businesses where extended battery runtime is required.
Up to 95% Depth of Discharge
The FLA48250 supports a Depth of Discharge of 95% or greater, allowing customers to utilise a large portion of the battery’s available capacity.
This provides significantly more usable energy compared with conventional lead-acid battery banks where deep discharge can negatively affect battery life.
Smart Battery Management System
An integrated Smart BMS manages and protects the battery during operation.
The battery incorporates multiple protection mechanisms, including an integrated:
Smart BMS
Circuit breaker
Fuse
Fire protection system
These systems work together to help ensure safe and reliable battery operation.
Built-In WiFi Monitoring
The FLA48250 features built-in WiFi, allowing compatible remote monitoring of battery pack information.
This makes it easier to monitor battery operation and system performance without requiring constant physical access to the battery.
Expandable Up to 187.5kWh
Need more storage?
The Felicity Solar FLA48250 supports the connection of up to 15 compatible batteries in parallel.
This allows the storage system to grow from:
1 Battery: 12.5kWh 2 Batteries: 25kWh 3 Batteries: 37.5kWh 4 Batteries: 50kWh 5 Batteries: 62.5kWh 10 Batteries: 125kWh 15 Batteries: 187.5kWh
This scalability makes the FLA48250 suitable for everything from larger residential installations to substantial commercial energy storage systems.
Wall or Floor Mounting
The battery offers flexible installation options and can be installed as either a:
Wall-mounted battery
Floor-mounted battery
This gives installers greater flexibility when working with different battery rooms, garages and equipment areas.
Wide Inverter Compatibility
The Felicity Solar FLA48250 communicates via CAN and RS485 and is designed for compatibility with leading inverter brands.
Always confirm that the specific inverter model and firmware version support the battery’s BMS communication protocol before installation.
Why Choose the Felicity Solar FLA48250?
The FLA48250 offers an impressive combination of 12.5kWh storage capacity, 250Ah capacity, 95%+ DOD, smart monitoring and expandable battery storage.
Its large capacity makes it particularly attractive for installations where customers want substantial storage without installing numerous smaller 5kWh battery modules.
Ideal For
Residential solar systems
Large homes
Home backup power
Load-shedding backup
Commercial solar installations
Offices
Small businesses
Farms
Guest houses and lodges
Off-grid installations
Hybrid solar systems
48V inverter systems
Large-capacity battery banks
Solar self-consumption
Certifications
The Felicity Solar FLA48250 carries manufacturer-listed certifications including:
UN38.3
CE-EMC
IEC 62619
Important Installation Information
The Felicity Solar FLA48250 is a 51.2V low-voltage lithium battery and should only be connected to a compatible inverter or battery charger.
The inverter’s battery voltage, maximum charge/discharge current and BMS communication protocol must be checked before installation.
For systems using multiple batteries in parallel, installation should follow Felicity Solar’s specified parallel connection, cabling and communication requirements.
