Electric drills are commonly used drilling tools. Traditional electric drills use alternating current (wet power) and are connected to the power cord, which is not very convenient. Today's electric drills have been connected with an electric screwdriver (electric screwdriver), and most of them have rechargeable batteries. , Lithium-ion battery as the main tool, can be used as a tool for drilling, screwing, and screwing, without the power cord, it is more flexible and convenient to use. Amateurs can consider buying this dual-use electric batch, but it is necessary to buy a larger version with strong torque. The disadvantage is that it cannot be drilled into the wall.