Enter the RYOBI 18V ONE+ System with the 18V ONE+ Lithium HIGH PERFORMANCE Starter Kit. This kit gives the versatility to complete a wide array of projects with minimal downtime. Each battery provides more runtime than the previous lithium battery, increasing overall efficiency. INTELLICELL battery technology features advanced electronics allowing batteries to last longer, think smarter and deliver up to 30% more power. The COOL-CORE design reduces temperature to optimize battery performance and extend battery life. Advanced lithium cells maximize performance and runtime. The robust design and anti-vibration technology increases durability and enhances user experience. These batteries features a high visibility LED fuel gauge to clearly indicate remaining runtime. Easily install and remove the battery with secure quick-release latches. Pair these HIGH PERFORMANCE batteries with any 18V ONE+ HP tool to leverage high performance brushless motors and advanced electronics for more power, longer runtime and the overall best experience on the 18V ONE+ system. This 18V ONE+ Lithium HIGH PERFORMANCE Starter Kit is backed by the RYOBI 3-Year Manufacturer's Warranty and includes an 18V ONE+ 6Ah Lithium HIGH PERFORMANCE Battery, an 18V ONE+ 4Ah Lithium HIGH PERFORMANCE Battery, an 18V ONE+ 2Ah Lithium HIGH PERFORMANCE Battery, Charger, Bag, and Operator’s Manuals.