[Adapter Compatible with Dewalt 18V NiCad and NiMh Cordless Power Tools] -- The 2-pack DM18D battery adapter is designed to use 20V/18V lithium batteries, to power older 18V power tools, compatible with Dewalt 18V NiCad and NiMh cordless power tools DC020, DC212B, DC212KZ, DC212KZ, DCDC, DC212KZ, DCDC, DC212NNN, DC330K, DW932, C410N, DC530KA, DC720KA, DC823K, DW932, etc. [Convert Different Batteries to 18V NiCad and NiMh Batteries] -- The adapter is compatible with Dewalt 20V DCB200 DCB201 lithium battery DCB203 DCB203BT DCB204 DCB206 DCB209 etc. and compatible with Mil-waukee 18V batteries: 48-11-1811, 48-11-1815, 48-11-1820, 48-11-1822, 48-11-1828 etc. Convert to replacement parts for 18V NiCad/NIMH batteries DC9098 DW9099 etc., for use with 18V power tools [Easy to Install and [Remove] -- To install: Slide the battery into the adapter, then connect it to the 18V cordless power tool. To remove: Press the release button and remove the battery and adapter. [Safety Tips] -- Complies