Description Add versatility to your tool box with the 20V MAX* to 18V Battery Adapter Kit. This adapter allows you to use select DEWALTÂ 20V MAX* Lithium Ion slide pack batteries with DEWALT 18V power tools.Allows use of 20V MAX* Batteries in most DEWALT 18V Tools - See questions and answers section for full compatbility informationAdapter requires the use of 20V MAX* ChargersAdapter will not fit in DEWALT 18V ChargersDo not use with Premium Batteries (DCB200, DCB204, DCB204BT, DCB205) in 18V Compact drills DC970, DC759 (use DCB201, DCB203, DCB203BT)Adapter will not work with 20V/60V FLEXVOLT BatteriesINCLUDES:(1) 18V to 20V MAX* Adapter(2) DCB203 20V MAX* XR Lithium Ion Batteries (2.0Ah)(1) 12V/20V MAX* Charger