Makita's compact Hammer Drill weighs in at only 3.4 pounds but delivers plenty of power of maximum torque. The all metal gear construction provides increased durability. The Makita 18v compact batteries charge in only 15 minutes, 4X times faster than 18v Ni-Cd. The 15 minute Rapid Optimum Charger communicates with the batteries built-in chip throughout the charging process to optimize battery life by actively controlling current, voltage and temperature. The 15-minute Rapid Optimum Charger has a built in fan to cool the battery which helps produce more lifetime work. There is a 3 year warranty on the tool and a one year warranty on the battery and charger.