DEWALT Heavy-Duty 1-Hour Charger and 18V Battery Pack with NANO Technology, Model# DC9180C | Northern Tool
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