Bottom of converter: Compatible with Milwaukee 18V lithium ion battery; Converter top: Convert to for RIDGID battery:R840084,R840087,R87002,AC840086,AC840088,AC840087,AC840089,AC8400806,AC8400809,AC840084,AC840083,130383025,130383001,R840083,R840085,R840086,AC840085 18V Lithium-Ion Battery. Convert to for AEG battery:L1890R-X5,L1890RHD,L1860R-X5,L1860RHD,L18502RC,L1850R,L1840RBL-C,L1840R,L1830R,L1830RHD,L1825R-X4,L1820R,L1820S 18V Lithium-Ion Battery. for Milwaukee 18V lithium ion battery is applied to the bottom of the converter: 48-11-1828 48-11-1815 48-11-1840 48-11-1850 48-11-1860 48-11-1890 18V lithium batteries... for Milwaukee 18V lithium battery converted to for RIDGID for AEG 18V lithium battery tool Use for Milwaukee 18V lithium battery for RIDGID for AEG 18V lithium foot battery tool, and let for Milwaukee 18V lithium battery and for RIDGID for AEG 18V lithium foot battery tool share the battery. This converter does not support for Milwaukee 18V lithium battery and for RIDGID for AEG 18V shared charger! Package Included: 1x Adapter (Only Adapter, No Battery) 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 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