Converting a Portable Cordless Drill to a Hand Crank DC Generator
The unit is light weight (2.5 lb), portable, low cost ($10-$20) and can be used to recharge
single cell batteries at from 1-3.5 amps. It can be made from a cordless electric drill in a
primitive environment. See http://home1.gte.net/mikelob/CrankGen-6.JPG