Two 12 Volt 15Ah batteries.
The red button on the thumb throttle is wired as the power switch.
When this kit is used with 12" (30cm) wheels the top speed is around 3 MPH, which is normal walking speed.
The motor speed can be variably controlled from a full stop to top speed and everywhere in between with the included thumb throttle.
The freewheel to axle adapter in this kit fits 1" axles and has a 1/4" keyway.
Freewheel to axle adapters for different size axles are available upon request.
This kit has a freewheel that engages in the clockwise direction.
A different version of this kit for 3/4" axles is available.