Power Wheel Adapter Kit Fit for Makita Battery with Voltage Regulator Fuse and Wire Terminals, Upgrade Battery Adapter Conversion Connector Suit for DIY Rc Truck, Robotics and Rc Car Toys

I use this https://a.co/d/0eY3249y Adjustable voltage for speed And low voltage protection. On pavement it will be jogging pace so you may want to slow it down. In deep grass you may want to speed it up. Note this is missing the fancy connector so you’ll need to figure that part on your own. I put a secondary connector in to keep the OE plug but then use a different connector for the power tool battery.