Badaptor - DeWalt to Ryobi 18-20V Battery Adapter | Badaptor
Energy kit Ryobi ONE+ RC18120-120 18V 2.0 Ah
RYOBI ONE+ 18V Lithium-Ion 4.0 Ah Compact Battery (2-Pack) and Charger Kit with FREE Cordless ONE+ 4-1/2 in. Angle Grinder PSK006-PCL445B - The Home Depot