Amazon.com: Battery Adapter for Makita DCA1820 18V Compatible with Makita Lithium Battery to DeWalt CA1820 18V DC9180 DC9096 Tool Use : Tools & Home Improvement
DM18RL Adapter Converter, Battery Adapter for Dewalt for Milwaukee M18 18V/20V Lithium ion Batteries Convert to for Ryobi P108 18V Li-ion NI-CD NI-MH ABP1801 Battery, with USB Port - - Amazon.com