Ni-Cd to Lithium Battery and Charger Conversion | NiCd / Ni-MH Battery Repair - YouTube
Battery Adapter MT20MN for Convert Makita 18V Li-ion Battery To Ni-Mh Ni-Cd Battery For Makita NiCad&NiMh Tool Use BL1830 BL1860 - AliExpress
1X Adapter For Ryobi 18V Li-ion Battery Convert to for Dewalt 18V Ni-cd Old Tool | eBay
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
2 PCS MT20MN For Makita 18V Lithium Battery To Ni-Mh Ni-Cd Li-Ion Battery