Practical implementations fail because there is no substantial energy in magnets that could be employed for propulsion or to compensate for energy losses. The force between permanent magnets is conservative as the magnetic field follows a potential, so that there is no work done over a closed cycle.

A Tesla with four in-hub motors could do some pretty cool maneuvering in tight spaces–a perfect value-add to the autonomous driving revolution. Six in-hub motors on an all electric truck comparable to a Chevy 3500 Dually would be amazing.

Permanent magnets are useful because they create the magnetic field without needing any electricity. The key to an electric motor is to make the electromagnets change polarity at the right position of the rotor. The diagram shows the electromagnet switching from north to south as a south pole in the rotor passes by.

The magnetic field from your magnets falls of pretty rapidly with distance, and your motor likely has some magnetic shielding so it’s very unlikely there would be any measurable effect on the operation of your motor from a couple of small permanent magnets located nearby.

Inside an electric motor, permanent magnets are set onto a ring surrounding a coil of wire. When the appliance’s switch is flicked on, electrons flow through the wire, turning it into an electromagnet. The attractive and repulsive forces of the permanent magnets around it make the electromagnet spin.

Take two magnets put one North pole and one South pole on the middle of the iron. Draw them towards its ends, repeating the process several times. Take a steel bar, hold it vertically, and strike the end several times with a hammer, and it will become a permanent magnet.

Re: Magnets and Batteries Attached is a page from an FAQ put out by Energizer, the battery manufacturer, that also states that magnetic fields have no effect on battery performance.