The Craftsman C3 19.2V Battery is a compact Lithium-ion model that increases power density over NiCad while providing a lighter-weight lithium-ion solution. As a size comparison, the battery shown on the left is the standard C3 NiCad battery. The battery in the middle is the regular C3 Lithium-ion battery currently available. The new compact Lithium-Ion battery is shown on the right and shows how much thinner the body of it is.
While not quite as powerful as the regular Lithium-Ion, it is still 10% more powerful than the regular NiCad. For most users, the difference in power will rarely be sensed, which makes this battery a good choice for your compact tools. There is a useful battery gauge built into the front of the batteries that turns from green to yellow to red to indicate the battery charge level.