Amazon.com: Battery Adapter Converter for Makita 18V Lithium-Ion Battery BL1830B BL1850B BL1860B Convert to Milwaukee 18V M18 Lithium Battery, Compatible with Milwaukee 18-Volt M18 Lithium Ion Cordless Tool Use : Tools &
Amazon.com: YongerTool 5.0Ah BL1850B Battery Replacement for Makita 18V Battery,5000mAh High Capacity Compatible with Makita LXT Lithium Ion Battery BL1815B BL1840B BL1830B BL1820B,2 Pack with Mount Holder : Tools & Home Improvement
FirstPower Battery Adapter for Makita 18V Lithium-ion Power Tools,Convert Milwaukee 18V or Dewalt 20V Lithium-ion Battery to Makita 18V Lithium-ion Battery - - Amazon.com