I sawed tiles and porcelain stoneware for her, and so, there is one big drawback: dust from tiles and granite clogs into all the cracks, including the place where the battery is attached and the latch button. This makes the battery difficult to remove. I recommend wrapping the battery in foil. Then less dust gets in and the battery itself is easier to remove. I read about the same drawback in Metabo cordless rotary hammers.