Recharge more that just your Onewheel with the USB charger add on. Top off your phone, gimbal, bluetooth speaker, 360 camera, with 4 ports that each deliver up to 2 amps. Slide the controller mount forward a bit and clip it on to the back edge of the battery box.
The kit includes the USB charger, a splitter cable, and a power cable. You can plug the power cable into the charge controller and power the USB charger directly, or use the splitter cable to connect the USB charger and the Onewheel at the same time.
The USB charger can take up to 70v as an input, so any extra power supply you might have that uses a 2.1mm barrel connector can power it as well.