The Hercules 20V Volt 5 Ah Amp Hour Extended-Performance Lithium-Ion Battery hc01 is a high-quality power tool accessory designed for extended use in various tools and workshop equipment. With a capacity of 5 Ah and a voltage of 20 V, this battery is perfect for powering a range of power tools efficiently. The Lithium-Ion technology ensures long-lasting power and performance, making it an excellent choice for various home and garden projects. The Hercules brand is known for its reliability and durability, making this battery a great option for professionals and DIY enthusiasts alike.