I am not a builder. I used to use an old Skill on a cadmium battery. The "memory effect," one battery included, and the low torque made all home renovations a test for my nerves. This screwdriver calmly tears the “heads” with 3.5 * 40 self-tapping screws at half power if you are in a hurry. )) Microscopic led-backlight performs its functions. Lithium batteries don't react as much to cold exposure. In general, the purchase is still impressed. Satisfied, but not the price.