Badaptor Makita Battery Adapter to Ryobi 18v One+ Works with Ryobi 18v One+ Tool | eBay
Makita USA - Product Details -PE00000028
MT20RNL Adapter for Makita 18V Battery to for Roybi 18V Battery,Most Batteries for MAKITA:BL1860B / BL1860 / BL1850B / BL1850 / BL1840 / BL1830B / BL1830 / BL1820 / BL1815 etc. - - Amazon.com
Amazon.com: Battery Adapter for Makita DCA1820 18V Compatible with Makita Lithium Battery to DeWalt CA1820 18V DC9180 DC9096 Tool Use : Tools & Home Improvement