Most of the other reviews of Ryobi cordless drills seem positive, but I'm returning my second 18V Lithium drill, model P815, to Home Depot tomorrow and buying something else.  I liked the feel of it and it worked well -- when it worked.  In August, 2009, I bought the package which included the drill, two compact batteries, and a charger.  I took it home and charged the batteries and checked them in the drill.  They both worked, so I left one in the drill and put the charger, extra battery, and drill back in the storage bag.  I used it twice for a couple of minutes each during the next two...