This is a WHC Solar 15kWh LiFePO4 Lithium Battery, specifically model 51.2V300AH.Capacity: It offers 15kWh of energy storage with a voltage of 51.2V and 300Ah capacity.Performance: The battery features a high cycle life, supporting over 6,000 cycles.Features: It includes a built-in Battery Management System (BMS) for protection and efficiency.