Amazon.com : DM18M Battery Adapter for Dewalt 20V Convert to for Makita 18V Lithium BL1830 BL1840 BL1850 14.4V-18V Battery : Tools & Home Improvement
Alian DM18M Battery Adapter for Dewalt 20V for Milwaukee 18V Battery M18 Convert to for MAKITA Battery,for Makita Power Tools,with USB Charging - Amazon.com
Dewalt & Milwaukee to Makita Battery Adapter - Powuse
Makita Battery Adapter to DeWalt – Power Tools Adapters
Torubia Battery Adapter for Milwaukee to Makita Battery, for Milwaukee 18V for Dewalt 20V Battery Convert to for Makita 18V Battery(Black) - Walmart.com