Easy to adjust to drive small screws by 3 devices: Electronic switch, Selective 4-stage to limit no load speed (9001,4002,0002,600min.) and Selective striking mode (Single or Continuous) High capacity 4.0Ah Lithium-ion battery provides longer runtime per charge than 3.0 Lithium-ion battery Two combinations of battery and charger LED light on body Remaining battery indicator lamp 18V and max torque: 160Nm (1,420in.-lbs) Hitachi's efficient brushless motor works approx. 55% more than our conventional brushed DC motor per battery charge Slide Lithium-ion battery BSL1840 (4.0Ah) or BSL1830 (3.0Ah), and charger UC18YRSL [Charging time: Approx. 60min. (BSL1840) 45min. (BSL1830)]

Easy to adjust to drive small screws by 3 devices: Electronic switch, Selective 4-stage to limit no load speed (9001,4002,0002,600min.) and Selective striking mode (Single or Continuous) High capacity 4.0Ah Lithium-ion battery provides longer runtime per charge than 3.0 Lithium-ion battery Two combinations of battery and charger LED light on body Remaining battery indicator lamp 18V and max torque: 160Nm (1,420in.-lbs) Hitachi's efficient brushless motor works approx. 55% more than our conventional brushed DC motor per battery charge Slide Lithium-ion battery BSL1840 (4.0Ah) or BSL1830 (3.0Ah), and charger UC18YRSL [Charging time: Approx. 60min. (BSL1840) 45min. (BSL1830)]