FeaturesVariable 2-speed 1/2" Hammer Driver-Drill (0-400 & 0-2,000 RPM) with Makita-built 4-pole motor delivers 750 in. lbs. of Max Torque; weighs only 5.1 lbs. with batteryVariable speed Impact Driver (0-2,900 RPM & 0-3,500 IPM) provides 1,460 in. lbs. of Max Torque; weighs only 3.3 lbs. with batteryHammer Driver-Drill and Impact Driver both feature Extreme Protection Technology (XPT鈩? which is engineered to provide increased dust and water resistance in harsh job site conditionsEquipped with Star Protection Computer Controls鈩?to protect against overloading, over-discharging and over-heating18V LXT庐 Lithium-Ion 4.0Ah battery BL1840B features an integrated L.E.D. battery charge level indicator18V LXT庐 Lithium-Ion 4.0Ah battery BL1840B provides up to 35% more run time per charge*18V LXT庐 Lithium-Ion 4.0Ah battery BL1840B reaches a full charge in 40 minutes or lessRapid Optimum Charger has a built-in fan to cool the battery for faster, more efficient chargingRapid Optimum Charger communicates with the battery's built-in chip throughout the charging process to optimize battery life by actively controlling current, voltage and temperatureMakita technology delivers category-leading charge time so the battery spends more time working and less time sitting on the charger