Milwaukee is dedicated to cutting every cord off the jobsite. I know its crazy right? Power tools that don't have to be constantly plugged in. With best-in-class performance, proprietary technology, and trade specific solutions Milwaukee has the largest, most compatible cordless system on the market. This new M18 REDLITIUM HIGH DEMAND 9.0 Battery Pack and Rapid Charger lasts super long and can power some intense tools. The M18 9.0 Battery Pack delivers up to 5X more run-time, 35% more power and runs 60% cooler than standard lithium-ion batteries.