Dual Fuel. DeWalt's DC020 is a portable 38-watt fluorescent work light that runs on the company's 12- to 18-volt cordless tool batteries or line voltage. Although bright, it's much cooler and more energy-efficient than a halogen. We found that it will run for over an hour on either 18-volt nicad or lithium-ion battery packs — in certain conditions. When temperatures are near freezing, you'll have to use the cord. The light is sold without a battery for $100. DeWalt, 800/433-9258. www.dewalt.com
