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
weqcter DCA1820 for Dewalt Battery Adapter for 18V Tools Compatible with 20V MAX XR Battery (2PACK) - Amazon.com