I have owned a Coleman Flashcell screwdriver since about 2009. it does not replace the drill driver (Craftsman 19.2V C3 drill driver with lithium ion cells and clutch) but it replaces small powered screwdrivers for doing repetitive screw driving. The no longer sell them and haven't for several years. I've been wanting one to have handy in the garage shop or house rather than running back and forth.

The advantage of a cordless, batteryless driver is that it uses a supercapacitor to drive...