Visit https://www.instructables.com/id/Portable-Wind-Generator-As-a-Cell-Phone-Charger/ for full information

In India, there are lots of people who still prefer trains to travel and spend days together to complete their journey. Most trains usually don't provide electricity even though there are charging sockets available. Even if they do, it is seen that such a charging facility takes a longer time than usual to fully charge the cell phone. Sometimes the passengers can even be seen fighting for charging their cell phones if there are less number of charging sockets available. I've myself witnessed people waiting at every coach's doors to get a chance to charge their phones.

To this problem, a common temporary solution may be a to use a typical PowerBank which doesn't last longer and need to be charged again. Solar cells are next preferred ones but are unreliable at most times and they are not economical too. So my unique solution to this problem is to use a Wind Generator. Since the trains run at least for 20 hours a day with a minimum speed of 30kmph, the wind hitting the windows can be converted into valuable electrical energy and hence charge our cell phones.

The application of this 5 watt wind generator is not just limited to a moving train but is immense as it can easily be used while travelling on any vehicle like bicycles, buses, motorbikes,recreational vehicles..etc.

In this simple Instructible I'll show you how to make one for yourself with the easiest method possible.

https://www.instructables.com/id/Portable-Wind-Generator-As-a-Cell-Phone-Charger/