February 5, 2011One of the best advantages to a cordless drill is that you can take it anywhere since it has its own power source. Cordless drill power is measured in volts; the higher the voltage the more powerful the drill.
Cordless drill power is measured in volts. A 12 volt drill are used for occasional, around the house repair projects and is fairly lightweight and easy to handle. A 14.4 volt drill is best suited to more frequent household use while an 18 volt drill is best for heavy use.
A variable speed drill allows you to control the speed at which your drill bit will rotate so you can adapt the speed to the project. Faster speeds less dense materials and slower speeds on more dense materials.