M18 Work Light. OUTSHINE, OUTLAST. The M18 Work Light lasts 600X longer than conventional incandescent bulbs. Powered by the M18 REDLITHIUM battery, it runs up to 4X longer on a single charge. Its 135 degree rotating head allows you to easily direct the light beam at the desired work area, while its integrated hook enables hands-free use.With a sealed aluminum head to provide impact and weather resistance, the cordless work light comes with a limited lifetime LED warranty.