Black and Decker 20V to Makita 18V Battery AdapterThe Black and Decker 20V to Makita 18V Battery Adapter gives you the freedom to power Makita 18V cordless tools with your Black and Decker or Porter Cable 20V lithium batteries. Designed for a snug fit and steady performance, this adapter is built with nickel plated copper connectors for reliable current flow and a durable ABS housing that stands up to regular use. With its added USB output, you can also charge your mobile devices on the go.