Amazon.com: DM18D Converter for DeWalt 18v to 20v Battery Adapter,for Milwaukee M18 18v Lithium Batteries Adapter, Convert to DC9096, fit for DeWalt 18v XRP Ni-Cad Cordless Tool, Upgraded Version of DCA1820,1Pcs :
Dewalt DCB184 Duopack - 2 x battery 18 Volt 5.0Ah Li-Ion
Battery for Dewalt 18V 20V Max XR 5.0Ah Li-ion DCB206-2 DCB205-2 DCB201-2 DCD771 | eBay