CAT 18V to Milwaukee 18V Battery AdapterThe CAT 18V to Milwaukee M18 Battery Adapter allows you to use your CAT 18V Caterpillar lithium batteries with compatible Milwaukee M18 18V cordless tools, giving you more flexibility from the battery platform you already own. Instead of purchasing additional Milwaukee M18 batteries, this adapter lets you power compatible Milwaukee M18 tools using CAT 18V batteries through a simple plug and play connection. Whether you are working on home projects,