Expand your RYOBI 18V ONE+ System with the RYOBI 18V ONE+ 4Ah Lithium HIGH PERFORMANCE Starter Kit. This 4Ah battery features up to 4X more runtime than the previous model 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 during demanding applications. The robust design and anti-vibration technology increases durability and enhances user experience. This battery features a high visibility LED fuel gauge to clearly indicate remaining runtime. Easily install and remove the battery with secure quick-release latches. Pair this Lithium HIGH PERFORMANCE battery 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. With 2X faster charging that its previous model, this charger decreases downtime significantly. Featuring LED indicator lights, users can easily identify battery charge status. The Energy Save Mode conserves energy when not charging or maintaining batteries. To maximize workspace, the wall mount capability ensures organization at any given point. This 18V ONE+ 4Ah Lithium HIGH PERFORMANCE Starter Kit is backed by the RYOBI 3-Year Manufacturer's Warranty and includes (1) PBP004 18V ONE+ 4Ah Lithium HIGH PERFORMANCE Battery, (1) PCG004 18V ONE+ Fast Charger and Operator's Manuals.