DIY: Ni-Cd To Lithium Battery Conversion By Using 18650 Cells - YouTube
Amazon.com: Wokyy 18 Volt Dual Chemistry Battery Charger R86092 R86091 Replacement for Ridgid 18V NiCad or Lithium Ion Battery R840083, R840085, R840086, R840087, R840089 and More : Tools & Home Improvement
Bosch Cordless Drill Ni Cd to Li Ion Battery Conversion - YouTube