The Felicity 12.5 kWh / 51.2 V lithium-battery is a high-performance solar energy storage unit designed for residential and small commercial use. Using lithium iron phosphate (LiFePOâ‚„) chemistry, it delivers deep-cycle capability, long lifespan (often over 6,000 cycles), built-in battery management system (BMS) for safety (over-charge, over-discharge, thermal protection), and the ability to expand in parallel with other similar units. Its nominal voltage around 50-52 V suits many modern inverter systems, and it can supply steady output for hours, depending on load.