Main advantages of the range extender (Range Extender): It increases the driving range of pure electric vehicles, which is also where the name “range extender” comes from. Some may ask: gasoline and diesel also cannot meet unlimited supply and demand; that is indeed true. However, gasoline or diesel has the common fuel station that can replenish a car’s “food” at any time, while pure electric vehicles do not have such a large number of reliable “stations,” because, based on current research, “charging station” technology is still in the development stage and is not very mature. The reality is that we cannot stop eating because of indigestion; charging station technology is still under research and development, and pure electric vehicles must continue to be used in suitable scenarios to reduce pollution and conserve energy as much as possible. Since we currently cannot replenish electric vehicles’ “food” at roadside “stations,” we can only first try to carry our own “food,” so that the driving range of electric vehicles can be increased to a certain extent. And this self-contained “food” is the range extender generator we are familiar with, and the range extender can also be refueled at a gas station at any time. More colloquially, it is like when we go on a business trip to a place without a socket to charge a mobile phone, and we can only carry a portable power source to increase the phone’s battery level. For electric vehicles, the range extender is equivalent to a portable power source for a mobile phone.