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 18V LXT Lithium‑Ion (3.0Ah) Battery, 2/pk
Makita 18V LXT Lithium-Ion Battery and Rapid Optimum Charger Starter Pack (5.0Ah) BL1850BDC2 - The Home Depot