18V Battery for Ryobi CMD-1802 CMD-1802M CMI-1802 CMI-1802M - Walmart.com
DM18RL Adapter Converter, Battery Adapter for Dewalt for Milwaukee M18 18V/20V Lithium ion Batteries Convert to for Ryobi P108 18V Li-ion NI-CD NI-MH ABP1801 Battery, with USB Port - Amazon.com