Cordless drill impact driver cordless drill driver series bosch psb battery voltage 18 v battery capacity 25 ah number of batteries with 1 battery type of battery li ion battery management replaceable battery gear 2 speed tool holder keyless idle speed max 1 650 rpm max drehmoment hart 48 nm weight 18 kg charge indicator integrated torch drill diameter in concrete 15 mm drill diameter in steel 13 mm drill diameter in wood 35 mm charging time