Cordless drill driver series bosch gsr bosch lightseries bosch professional battery voltage 144 v battery capacity 15 ah number of batteries with 2 batteries type of battery li ion battery management replaceable battery gear 2 speed tool holder keyless idle speed max 1 250 rpm max drehmoment hart 38 nm weight 13 kg integrated torch drill diameter in steel 10 mm drill diameter in wood 25 mm charging time 45 min chuck width 1 5 10 mm torq