The Ryobi 18V One+ 4.0 & 2.0Ah Lithium Starter Kit includes batteries and a charger with a total capacity of 4.0 Ah and 2.0 Ah, making it ideal for powering a variety of tools and equipment. The lithium-ion technology ensures long-lasting power and performance, while the 18V voltage provides reliable operation across different devices. The kit comes with a 3-year manufacturer warranty and is designed for ease of use, making it a convenient and reliable option for DIY enthusiasts and professionals alike.