Think of the tasks you’ll take on with the screwdriver. For light- to medium-duty tasks, like assembling furniture and hanging wall decorations, 3 to 7V are sufficient. Heavy-duty jobs involving high-density material like hardwood require 8V or more. Battery life for electric screwdrivers varies from 0.5 to 2.5Ah, with higher values amounting to longer runtimes. The force produced by an electric screwdriver, or torque, ranges from 1 Nm on the lighter side up to 27 Nm for heavy-duty models. Also, consider the grip. Fixed-pistol grip electric screwdrivers feature a small handle and trigger operation. Variable-grip electric screwdrivers can bend and rotate to reposition the grip for enhanced maneuverability. In-line grip electric screwdrivers feature a straight grip that more closely resembles a manual screwdriver. Beyond these essential considerations, there are additional features available, such as variable speed, torque adjustment, built-in LED lights, and included screwdriver bits.