ryobi p721 one+ 1,800 lumen 18v hybrid ac and lithium ion powered flat standing led work light with onboard mounting options (battery and extension cord not included, light only) ryobi ryobi presents the 18-volt one+ 20-watt dual power led work light. never run out of power with the convenient option of using a one+ battery (sold separately) to operate the light, or switch over to electric power with an extension cord for prolonged use. in addition to the convenience of dual-power functionality, the work light produces over 1800 lumens to illuminate large work spaces and runs cooler than halogen or incandescent lights.