This spare laptop battery is designed specifically for Lenovo IdeaPad 300-15IBR and 300-15ISK models and is compatible with part numbers L15L4A01, L15M4A01, and L15S4A01. It features a battery capacity of 2200mAh/33Wh and a voltage of 14.8V with 4 battery cells made of Li-Ion. The battery comes in a sleek black color and is covered by a 5-year manufacturer warranty.In addition to being compatible with Lenovo IdeaPad 300-15IBR and 300-15ISK models, this spare laptop battery is also compatible with Lenovo V4400 Ideapad 100-15IBD model. Please be aware that this battery contains chemicals that may cause harm, as indicated by the California Prop 65 Warning.