This item is a Felicity Solar 17.5kWh Lithium Battery (specifically a model in the FLA series, likely FLA48314-EU or similar).
Capacity & Voltage: 17.5kWh total energy with a 48V (or 51.2V) rated voltage.
Technology: Uses Lithium Iron Phosphate (LiFePO_{4}\)) technology for safety and durability.
Features: Includes built-in WiFi/Bluetooth for remote monitoring and a high-capacity 350Ah rating. Design: Designed for residential or commercial solar power systems, often featuring an aerosol fire extinguishing system.