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Electric Power Tools - Choosing Between Corded and Cordless Electric power tools reduce physical strain, and allow users to complete jobs in a fraction the time required using hand-held tools. They are always powered which means there is no chance of "power disappearing." They draw energy from an electricity supply -- either through a cord plugged into an outlet or batteries that recharge. Corded vs. Cordless The choice between corded and cordless power tools is dependent on your individual needs and the environment in which you work. Each has distinct advantages