For many years I had a Black and Decker hand-sized screwdriver (single speed, hex bits only) that I used for almost 20 years. It still runs. About 1.5 years ago I upgraded to a Bosch drill, with variable speed, a real chuck and even a torque dial. With all those features it was still tiny and light compared to my corded DeWalt (the "real" drill). I charged up the 2 batteries. Used the drill for all the little projects and finally, two weeks ago, the first battery ran out. Put in the other, which has held its charge just fine, and back to work.

I'm a big fan of my Bosch 12 volt tools. I like the small size and the power works for almost everything I do. As a DIYer, I rarely need to charge my tools as I don't use them that often.