I constantly compare it with the 14 volt metabo that I have been working with for the last 13 years. Devalt is more powerful and more compact. This is where the pluses end. 2Ah holds a charge less than other batteries of my other 2Ah screwdrivers. When drilling at maximum speed, the speed is constantly buggy, it jumps a little, then it turns in different ways all the time. (once slowly, another time faster or even float, not much, speed). The engine brake often does not work. And this CORN!.