The RYOBI 18V ONE+ Lithium HIGH PERFORMANCE Starter Kit with FREE 18V ONE+ HP Compact Brushless Compact 6-1/2" Circular Saw. is the perfect way to expand your 18V system and increase your productivity. Add (2) 4Ah and 2Ah Lithium HIGH PERFORMANCE batteries and charger to your collection when you purchase this starter kit. This 4Ah battery features up to 4X more runtime and the 2Ah features up to 2X more runtime than the previous model increasing overall efficiency. La tecnología de batería INTELLICELL cuenta con electrónica avanzada que permite que las baterías duren más, piensen de manera más inteligente y brinden hasta un 30% más de potencia. El diseño COOL-CORE reduce la temperatura para optimizar el rendimiento de la batería y prolongar su vida útil. Advanced lithium cells maximize performance and runtime during applications. These batteries feature a high visibility LED fuel gauge to clearly indicate remaining runtime. Instale y retire fácilmente la batería con cerradura segura con desajuste rápido. Parte del sistema ONE+ de RYOBI - Cualquier batería ONE+ de 18 V funciona con cualquier producto ONE+ de 18 V. This 18V ONE+ Lithium HIGH PERFORMANCE Kit is backed by the RYOBI 3-Year Manufacturer's Warranty and includes (2) PBP004 18V ONE+ 4Ah Lithium HIGH PERFORMANCE Batteries, PBP003 18V ONE+ 2Ah Lithium HIGH PERFORMANCE Battery, PCG002 18V ONE+ Charger, 18V ONE+ HP Compact Brushless Compact 6-1/2" Circular Saw.