Many people believe that produce an electric motor that will use as a source of power cells and batteries is something easy, but this is not a true statement.
So that the electric motor works, will not be enough to put a coil and classified permanent magnets and fixed and which circulate electric current so that so the poles revolve around these magnets.
An electric motor not only runs on batteries, it is necessary that for the electric motor to work it needs to happen frequent polarity changes and own times. Leeson 175310.00
The electric motor DC has a rotor which is called electromagnet which lies between the poles of magnets classified as stationary permanent. For this electromagnet operate efficiently it must have a rotor with an iron core which is strongly magnetized, and the current through the coil.