Craftsman's XCP (eXtreme Core Performance) line of lithium-ion batteries offer more run time, torque, durability, and work with the entire line of Craftsman C3 tools. Come in compact and high capacity models. Compact features a 1.5 Amp-Hour cell that delivers up to 35 percent more run time and can operate in temperatures from 5 to 158 degrees F. The high capacity line has a 4 Amp-Hour cell and also works in similar extreme weather. Both have a dual fuel gauge shows battery power status.