Power Wheel Adapter for Makita 18V Battery with Fuse & Switch & Wire terminals,Power Connector for Rc Car, Robotics, Rc Truck,DIY use, Work with for Makita BL1860 BL1850 BL1840 BL1830 Li-ion Battery:
TS100 Power Adapter for Makita Batteries - Instructables
Makita USA - Product Details -BCV03
FirstPower Battery Adapter for Makita 18V Lithium-ion Power Tools,Convert Milwauk 18V or Dewalt 20V Lithium-ion Battery to Makita 18V Lithium-ion Battery - Amazon.com
Secret Makita USB Charging Adaptor For 18V Batteries!! - YouTube