Lighter. Faster. Stronger. More efficient. New technology, particularly in batteries, is making today's power tools far superior to the ones you used even a decade ago — let alone the ones your father used to swear by. If your weekend projects keep getting tripped up by cords, slowed down by power drains, and postponed due to darkness, then stop messing around with obsolete technology and stock up on these new, high-tech power tools.