A young man from Russia explains a rather dangerous technique to charge a mobile phone battery, with the electric current flowing through the rails of a railway line.

Initially, the young measure the voltage on the rails with a multimeter, which reaches up to 5 volts, but is unstable. Then, just connecting the wires to a capacitor to stabilize the voltage, and from there on the phone. A method that remains dangerous, While he explains that he did this experiment under the supervision of a worker railroads.