【Converter bottom】Compatible with For Ridgid For AEG 18V Lithium battery.For example:R840083 R840085 R840086 R840087 R840089 AC840085 AC840086 AC840087P AC840089 Series,etc. 【Converter top】Compatible with Dewalt 18V 20V Li-ion Battery power tools. 【WARNING】Make sure that the battery is fully inserted for normal use.Please do not force into the battery pack, if the battery pack can not be installed, the installation method may be wrong 【Note】This product is only compatible with the tools, not compatible with the charger, Do not use the adapter to charge the battery，When you need to charge the battery, remove the converter. 【Package Included】1 x Adapter (Adapter Only, Not Include Batteries & Tools) Package Included: 1 * Battery convert adapter（battery not included） 1 * manual