Enter the RYOBI 18V ONE+ System with the 18V ONE+ Lithium-Ion 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-ion 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-ion 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. Best of all, they are a part of the RYOBI 18V ONE+ System of over 280 Cordless Products that all work on the same battery platform. This 18V ONE+ HIGH PERFORMANCE Starter Kit is backed by the RYOBI 3-Year Manufacturer's Warranty and includes an 18V ONE+ 6.0 Ah HIGH PERFORMANCE Battery, an 18V ONE+ 4.0 Ah HIGH PERFORMANCE Battery, an 18V ONE+ 2.0 Ah HIGH PERFORMANCE Battery, Charger, Bag, and Operator’s Manuals.