Adapter For Dewalt 18V/20V Battery Adapter Convert to for Ryobi 18v Tools | eBay
Amazon.com: DM18RL Battery Adapter for Dewalt to Ryobi Battery Adapter, Convert Dewalt 20V Llithium Battery to Ryobi 18V P107 P108 Battery with 5V 2.1A MAX USB Charge : Tools & Home Improvement