Some of the best cordless drills on the market today are made by Makita, Milwaukee, DeWalt, Hitachi and Bosch. Regardless of the size or type of cordless drill in question, these brands consistently receive the highest ratings from reviewers.
Important factors to take into account when choosing a cordless drill are size, power and battery life. The size of cordless drill is based primarily on battery size, the most common sizes being 18 volt, 14.4 volt and 12 volt. 18-volt drills are the most powerful and generally last the longest before needing to be recharged. They are also the heaviest. All of these factors decrease with smaller battery size.