The product is a high-quality black Li-Ion battery designed for Lenovo ThinkPad T480s laptops. It has a capacity of 57Wh and a voltage of 11.58V, making it compatible with models such as L17L3P71, L17M3P71, and 01AV479. The battery comes with a 1-year manufacturer warranty and is manufactured in China. This unit is specifically designed for Lenovo laptops, providing reliable power for extended periods to ensure uninterrupted work or entertainment on the go.