10kWh 51.2V Felicity Lithium-ion battery is a LiFePO4 (lithium iron phosphate) battery pack designed for household photovoltaic (solar) systems. Key features include a built-in Battery Management System (BMS) for protection, support for parallel connection to expand capacity, and a long cycle life. This battery has a capacity of 10 kWh and a nominal voltage of 51.2V, which corresponds to a 200Ah capacity (10,000 Wh / 51.2V ≈ 195Ah).