Draper storm force cordless hammer drill with 2 li ion batteries 14 4v draper 14599 p this cordless drill is part of the storm force range from draper and is compact lightweight and is ideal for use in schools colleges and by the keen diyer supplied with 2 x 14 4v lithium ion batteries which helps deliver superior power and longevity compared to other rechargeables p p it features a single speed gearbox with electric brake 16 torque control positions variable speed motor 10mm keyles