An e-bike without a functioning electric motor is extremely heavy..... In conclusion, electric bicycles are easy to pedal. When I first rode an e-bike a few years ago, it felt strange. Because the bike moved smoothly just by stepping on the pedal lightly. The reason, of course, is that the electric motor assists in propulsion. Therefore, electric bicycles always have a built-in battery. What are the conditions for integrating multiple concepts? One of the conditions for the integration of concepts is that they are similar to each other. Originally, things that are similar to each other can be exchanged for each other, and are sometimes integrated into one as the final form. Since most of the batteries are rechargeable batteries, those who use electric bicycles must always prepare a charged battery. Such a small battery takes only a few hours to charge, but the electric bicycle cannot be used while the battery is being charged. Also, ...