Amazon.com: QSDXNYDC Power Wheel Battery Adapter for Makita 18V LXT Battery with Fuse&Switch 14 AWG Connector for BL1850B,BL1860B,BL1830B,BL1840B, BL1820B for DIY Rc Car Toys, Robotics and Rc Truck : Tools & Home Improvement
Makita 18V LXT Lithium-Ion Compact Battery Pack 2.0Ah with Fuel Gauge BL1820B - The Home Depot