Amazon.com: 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
Makita XEC01PT1 18V X2 (36V) LXT® Lithium-Ion Brushless Cordless 9" Power Cutter Kit, with AFT®, Electric Brake, 4 Batteries (5.0 Ah) - Amazon.com
Amazon.com: MT20DL Battery Adapter for Makita 18V BL1830 BL1860 BL1815 Li-ion Battery Convert for Dewalt 18V 20V DCB200 Li-ion Battery