DVISI MT20MN 18V li-ion battery Convert To 18V NI-CD/NI-MH Charger Tool Adapter for makita cordless power tool(battery not inclu - AliExpress
Bosch Cordless Drill Ni Cd to Li Ion Battery Conversion - YouTube
Xunbao DM18RL Adapter Converter, Battery Adapter for Dewalt for Milwaukee 18V/20V Lithium ion Batteries Convert to for Ryobi P108 18V Li-ion NI-CD NI- MH ABP1801 Battery, with USB Port - Amazon.com
DIY: Lithium Battery to NiCd Power Tool (With Simple Adapter) : 11 Steps (with Pictures) - Instructables
DIY: Ni-Cd To Lithium Battery Conversion By Using 18650 Cells - YouTube