EXPAND your tool options! Use power drill 'batteries' with drills that are not normally compatible with each other. (DeWalt 20v or Milwaukee 18v to Ryobi 18v adapter) Note: this is ONLY the adapter, NOT the battery. • Versatile Compatibility: This adapter allows you to use your DeWalt 20V and Milwaukee M18 lithium batteries with Ryobi 18V tools, expanding your tool options. • Convenient USB Port: With the built-in USB port, you can charge your phone or other devices on the go using your battery. • Easy to Use: Simply slide your battery into the adapter and you're ready to go, no complicated installation required. • Cost-Effective Solution: Save money by using the batteries you already have instead of purchasing new ones for your Ryobi tools.