The Bosch GBH 18V-20 Cordless SDS+ hammer drill is as powerful as a corded version with the same impact energy same drilling capacity & same speed as corded equivalent. Ergonomically designed with soft grip handle versatile due to 3 mode drive allowing for drilling hammer drilling & chiselling. The innovative Bosch Electronic cell protection (ECP) protects the battery against overload overheating & deep discharge extending the lifetime of the battery.