2536 Li-Ion 3.6-v screwdriver. When people have to do small screwdriving jobs, they can have all kinds of problems. Power tools are often bulky and difficult to hold. Working spaces can be extremely tight. And under these conditions, visibility can also be limited because of poor lighting conditions. Skil model 2536 tackles these problems effectively. The 2536 3.6-v Li-ion screwdriver is very compact and lightweight. Depending on the working space, the handy Twist function lets you switch instantly between pistol grip and an in-line handle. With the integrated LED spotlight, extra light is always available for working in dark corners.