Cordless drills hit their stride when manufacturers introduced the lithium-ion battery several years ago. These batteries combine huge energy density with light weight. (It’s no wonder they’re slowly replacing nickel-cadmium batteries) Tool companies launched their lithium-ion revolution with big 28- and 36-volt models—tools that had great power but were also unwieldy. Now, virtually all manufacturers have added much nimbler 18-volt models.
Corded drills come in many shapes and sizes and many are specialized for working in certain conditions. For example, an angle drill – also referred to as a right angle drill – allows workers needing to drill a hole to do so tight and narrow spaces. These are lightweight and compact drills that are easy to maneuver without moving your entire body. For tougher jobs, driver drills are a better drill, as they combine the basic aspects of a drill with the force of a driver. But, when you need to drill specifically through a hard material like rock or concrete, a hammer drill allows you to make a clear hole through masonry by adding a hammer aspect to break up the harder surface. For a drill that gives you a stronger grip, a spade handle drill (which has a D-handle that moves in a 360-degree angle for full control while drilling) will be best.
