How to put electric motor on bike?

There are several ways to put an electric motor on a bike. One option is to purchase an electric bike conversion kit, which contains all the necessary components: a motor, battery, controller, wiring, and throttle or pedal-assist sensor. The kit can be installed on almost any bike with a little bit of technical skill and some basic tools. Another option is to buy a purpose-built electric bike, which comes with the motor and battery already integrated into the frame. These bikes tend to be more expensive but offer higher performance and better aesthetics. It's important to ensure that the electric bike conversion or purpose-built bike complies with local laws and regulations regarding eBike speed, power output, and road safety.