Combo kit with 18V LXT Impact Driver and 18V LXT 1/2" Hammer Driver-Drill. Includes two 18V lithium-ion LXT 4.0Ah batteries and 18V lithium-ion Rapid Optimum Charger. Star protection computer control technology. Both impact driver and hammer driver-drill feature XPT™ for increased dust and water resistance. 18V LXT lithium-ion 4.0Ah batteries feature LED battery charge indicator light, 35% more run time (compared to BL1830), and can reach full charge in 40 minutes or less. Rapid Optimum Charger has a built-in cooling fan and communicates with the battery via built-in chip that optimizes battery life.