General description This DM18D DCA1820 Battery Adapter allows you to use Dewalt 20V/18V and Milwaukee M18 18V lithium batteries with Dewalt 18V/20V NiCad and NiMh tools. It is designed to convert Dewalt 20V Max lithium batteries for compatibility with older 18V tools and also enables the use of Milwaukee M18 batteries with Dewalt tools. Technical specifications Compatible with Dewalt lithium-ion batteries: DCB200, DCB201, DCB203, DCB203BT, DCB205, DCB206 Compatible with Milwaukee M18 Lithium-Ion batteries: M18 48-11-1852, 48-11-1840, 48-11-1815, 48-11-1820 Compatibility and accessories Compatible with Dewalt 18V/20V NiCad batteries: DC9096, DC9098, DE9039, DE9095, DW9095, DW9096, DW9098 Usage Replace the built-in USB port of the DCA1820 adapter to charge low-power electronic products such as smartphones.