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 USA - Product Details -BL1820B-2
1824 Makita® 18V Battery Rebuild Service – MTO Battery