The Ryobi P192 One+ 18V 4.0Ah Li-Ion + HP Battery is a powerful and reliable battery designed for use with various home and garden tools. With a lithium-ion battery technology and a capacity of 4 Ah, this battery provides 3X the run time compared to traditional batteries. The battery operates at a voltage of 18V and comes in a sleek black color. It is wireless and comes as a single set, making it convenient and easy to use for various power tools. The Ryobi brand is known for its quality and durability, making this battery a great addition to any workshop or tool collection.