The Makita 18V LXT Li-ion Brushless Quick-Shift Mode 3-Speed Impact Driver, No. XDT09M, features fast charging battery packs. The tool's Quick-Shift Mode automatically downshifts and reduces rotation and impact speed prior to driving the screw into place. The push-button feature is engineered to minimize screw thread stripping, screw breakage and damage to work. The impact's BL Brushless Motor delivers 1,550 in/lbs of max torque. The XDT09M weighs 3.3 lbs with the 4.0Ah battery, is 4-3/4" long and includes a three-stage battery power indicator. The impact has the company's Extreme Protection Technology (XPT), an interior seal inside the tool engineered for improved water and dust resistance.