Einhell Power X-Change PLUS 18-Volt Lithium-Ion Compact Battery, 2.6-Ah - - Amazon.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