Badaptor - DeWalt to Makita 18V Battery Adapter | DIY at B&Q
Makita to DeWalt 18-20V Battery Adapter – Badaptor
Amazon.com: DM18M Converter for Dewalt & for Milwaukee to Makita Battery Adapter, Fit for Dewalt 18v-20v & for Milwaukee 18v M18 Lithium Batteries, Work for Makita 18v Cordless Power Tools : Tools