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
WESCO 18V 4.0Ah Long Life Li-ion Battery for WESCO 18V Cordless Tools WS9940 : Amazon.de: DIY & Tools
BLACK+DECKER 18 V 2.0AH Lithium Ion Battery Convenient Compact and Versatile Compatible with all 18 V BLACK+DECKER Products BL2018-XJ : Amazon.co.uk: DIY & Tools