Today’s top-end cordless tool batteries range up to 18 volts—powerful enough to drill massive holes through just about anything. With power, however, comes weight, which is a big thing to consider if you’re looking for cordless tools to do odd jobs around the house. Beefy 18-volt drills can weigh up to 10 pounds, while typical 9.6-volt drills tip the scales at about 3 ½ pounds. When it comes to hanging curtain rods from atop a ladder, having a lighter weight tool will make the job a lot easier. Ergonomics is an important factor as well. Back in the day, most drills had a pistol grip. Today, many cordless tools feature a T-type handle with the battery pack located at the base of the T-grip. This provides better balance overall and allows you to use the tool in much more confined spaces because your hand is out of the way.