I have lived from some time with a cheap and cheerless 18v portable drill. Pretty good when the battery was charged, but the battery didn't last very long, and I drained a battery just doing the floor of my "boat shed". (5' x 3' shed for storing bits in)
Then I came across this Makita cordless impact driver set . It's a world apart from my old toy cordless. The quality is obvious in just handling it. The impact driver easily belts screws into solid oak without any of the usual ruining of the screw heads. And I got it up in the US for less than half the price of buying it in Europe. Add a €20 transformer and off you go.